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schmoboy
Joined: 26 Feb 2006
Posts: 130
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 Posted: Tue Jun 14, 2016 12:51 pm Post subject: Wet Dog Syndrome On Shutdown |
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My first IO-540, so not sure if some of this is "normal", but the darn
thing shakes like a wet dog on shutdown.
I've modified my shutdown to use a higher RPM when pulling the mixture.
That helps a little, but still very noticeable.
I'm wondering if there's more to it and I need to check a few things.
Maybe need another washer on the isolator through bolts to tighten them
up a bit? Do I need the stiffer isolators? Maybe I need to re-check my
engine mount bolts, but I'd think that would be REALLY noticeable if
they were not to spec.
I did have to add a washer to the nose gear isolators to snug those up a
bit about 10 hours ago and I had custom VA-143 and VA-144 made to
correct size. That helped a little also, but I'm still
seeing/hearing/feeling a good deal of shake rattle and roll on shutdown.
Any other tips or guidance on things to check?
-Sean #40303 prepping for second annual. Need to get that shifted to
winter months. 
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bruce1hwjohnson(at)yahoo.
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| Posted: Tue Jun 14, 2016 1:10 pm Post subject: Wet Dog Syndrome On Shutdown |
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It just sounds like you are not getting the fuel to shut of completely and it just keeps trying to run.
God Bless America (please)  Bruce
On Tuesday, June 14, 2016 2:00 PM, Sean Stephens <sean(at)stephensville.com> wrote:
--> RV10-List message posted by: Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)>
My first IO-540, so not sure if some of this is "normal", but the darn
thing shakes like a wet dog on shutdown.
I've modified my shutdown to use a higher RPM when pulling the mixture.
That helps a little, but still very noticeable.
I'm wondering if there's more to it and I need to check a few things.
Maybe need another washer on the isolator through bolts to tighten them
up a bit? Do I need the stiffer isolators? Maybe I need to re-check my
engine mount bolts, but I'd think that would be REALLY noticeable if
they were not to spec.
I did have to add a washer to the nose gear isolators to snug those up a
bit about 10 hours ago and I had custom VA-143 and VA-144 made to
correct size. That helped a little also, but I'm still
seeing/hearing/feeling a good deal of shake rattle and roll on shutdown.
Any other tips or guidance on things to check?
-Sean #40303 prepping for second annual. Need to get that shifted to
winter months.
f="http://www.matronics.com/Navigator?RV10-List" target="_blank">http:/ --> <a href="http://www.matronics.com/contribution" target="====
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Deems Davis
Joined: 09 Jan 2006
Posts: 925
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| Posted: Tue Jun 14, 2016 2:32 pm Post subject: Wet Dog Syndrome On Shutdown |
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Sean,
Are referring to excessive(?) physical shaking/vibration of the engine (at) shutdown, or are you more concerned about the engine not shutting down promptly and 'running on'?
Deems
On Tue, Jun 14, 2016 at 1:51 PM, Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)> wrote:
| Quote: | --> RV10-List message posted by: Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)>
My first IO-540, so not sure if some of this is "normal", but the darn thing shakes like a wet dog on shutdown.
I've modified my shutdown to use a higher RPM when pulling the mixture. That helps a little, but still very noticeable.
I'm wondering if there's more to it and I need to check a few things. Maybe need another washer on the isolator through bolts to tighten them up a bit? Do I need the stiffer isolators? Maybe I need to re-check my engine mount bolts, but I'd think that would be REALLY noticeable if they were not to spec.
I did have to add a washer to the nose gear isolators to snug those up a bit about 10 hours ago and I had custom VA-143 and VA-144 made to correct size. That helped a little also, but I'm still seeing/hearing/feeling a good deal of shake rattle and roll on shutdown.
Any other tips or guidance on things to check?
-Sean #40303 prepping for second annual. Need to get that shifted to winter months.
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schmoboy
Joined: 26 Feb 2006
Posts: 130
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| Posted: Tue Jun 14, 2016 2:42 pm Post subject: Wet Dog Syndrome On Shutdown |
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Hey Deems!
Yes, what I feel to be excessive shaking of the engine at shutdown. It
does not run on.
Been following the Lyc recommended shutdown at 1200 rpm then ICO.
Shaking like crazy with that procedure. I've read other shutdown
suggestions on the interwebs, but can't find anything that works, which
leads me to believe it's some kind of isolator issue or something.
-Sean
| Quote: | Deems Davis <mailto:deemsdavis(at)cox.net>
June 14, 2016 at 5:31 PM
Sean,
Are referring to excessive(?) physical shaking/vibration of the engine
(at) shutdown, or are you more concerned about the engine not shutting
down promptly and 'running on'?
Deems
|
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jesse(at)saintaviation.co
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| Posted: Tue Jun 14, 2016 2:59 pm Post subject: Wet Dog Syndrome On Shutdown |
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Try shutting it down by killing the mags and see if it is smoother. If you are cutting the fuel off completely, it should be as smooth as killing the mags. They all shake, but I've never thought of it as excessive.
Jesse Saint
Saint Aviation, Inc.
352-427-0285
jesse(at)saintaviation.com
Sent from my iPad
| Quote: | On Jun 14, 2016, at 6:41 PM, Sean Stephens <sean(at)stephensville.com> wrote:
Hey Deems!
Yes, what I feel to be excessive shaking of the engine at shutdown. It does not run on.
Been following the Lyc recommended shutdown at 1200 rpm then ICO. Shaking like crazy with that procedure. I've read other shutdown suggestions on the interwebs, but can't find anything that works, which leads me to believe it's some kind of isolator issue or something.
-Sean
> Deems Davis <mailto:deemsdavis(at)cox.net>
> June 14, 2016 at 5:31 PM
> Sean,
>
> Are referring to excessive(?) physical shaking/vibration of the engine (at) shutdown, or are you more concerned about the engine not shutting down promptly and 'running on'?
>
> Deems
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schmoboy
Joined: 26 Feb 2006
Posts: 130
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| Posted: Tue Jun 14, 2016 3:20 pm Post subject: Wet Dog Syndrome On Shutdown |
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Thanks Jesse.
Do you mean instead of ICO, or at the same time as ICO?
| Quote: | Jesse Saint <mailto:jesse(at)saintaviation.com>
June 14, 2016 at 5:58 PM
Try shutting it down by killing the mags and see if it is smoother. If
you are cutting the fuel off completely, it should be as smooth as
killing the mags. They all shake, but I've never thought of it as
excessive.
Jesse Saint
Saint Aviation, Inc.
352-427-0285
jesse(at)saintaviation.com
Sent from my iPad
|
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jesse(at)saintaviation.co
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| Posted: Tue Jun 14, 2016 4:51 pm Post subject: Wet Dog Syndrome On Shutdown |
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Instead of.
Jesse Saint
Saint Aviation, Inc.
352-427-0285
jesse(at)saintaviation.com
Sent from my iPad
| Quote: | On Jun 14, 2016, at 7:19 PM, Sean Stephens <sean(at)stephensville.com> wrote:
Thanks Jesse.
Do you mean instead of ICO, or at the same time as ICO?
> Jesse Saint <mailto:jesse(at)saintaviation.com>
> June 14, 2016 at 5:58 PM
>
>
> Try shutting it down by killing the mags and see if it is smoother. If you are cutting the fuel off completely, it should be as smooth as killing the mags. They all shake, but I've never thought of it as excessive.
>
> Jesse Saint
> Saint Aviation, Inc.
> 352-427-0285
> jesse(at)saintaviation.com
>
> Sent from my iPad
>
>
>
>
|
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schmoboy
Joined: 26 Feb 2006
Posts: 130
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| Posted: Tue Jun 14, 2016 5:46 pm Post subject: Wet Dog Syndrome On Shutdown |
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I assume what that would tell me is if I have the mixture properly set
on the servo to REALLY be at idle cutoff?
| Quote: | Jesse Saint <mailto:jesse(at)saintaviation.com>
June 14, 2016 at 7:05 PM
Instead of.
Jesse Saint
Saint Aviation, Inc.
352-427-0285
jesse(at)saintaviation.com
Sent from my iPad
|
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flyboy(at)gmail.com
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| Posted: Tue Jun 14, 2016 6:26 pm Post subject: Wet Dog Syndrome On Shutdown |
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It's my understanding that most fuel injection systems have a spring-loaded valve at the distribution manifold to allow for clean, quick shutdowns once the fuel pressure drops below a certain threshold. Seems like if this were failing to close cleanly some of the cylinders might run longer than others, thus causing a shudder... Shutting down the ignition would eliminate that as a cause.
On Tue, Jun 14, 2016 at 7:45 PM, Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)> wrote:
| Quote: | --> RV10-List message posted by: Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)>
I assume what that would tell me is if I have the mixture properly set on the servo to REALLY be at idle cutoff?
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rv10flyer(at)live.com
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| Posted: Tue Jun 14, 2016 6:40 pm Post subject: Wet Dog Syndrome On Shutdown |
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or the mixture cable isn't extending enough to fully close the fuel flow.
it does sound like the aircraft is at a 400rpm mode and struggling to stay running with minimal fuel flow.
Sent from my Samsung Galaxy Tab® S
-------- Original message --------
From: "Berck E. Nash" <flyboy(at)gmail.com>
Date: 06/14/2016 7:30 PM (GMT-08:00)
To: rv10-list(at)matronics.com
Subject: Re: Wet Dog Syndrome On Shutdown
It's my understanding that most fuel injection systems have a spring-loaded valve at the distribution manifold to allow for clean, quick shutdowns once the fuel pressure drops below a certain threshold. Seems like if this were failing to close cleanly some of the cylinders might run longer than others, thus causing a shudder... Shutting down the ignition would eliminate that as a cause.
On Tue, Jun 14, 2016 at 7:45 PM, Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)> wrote:
| Quote: | --> RV10-List message posted by: Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)>
I assume what that would tell me is if I have the mixture properly set on the servo to REALLY be at idle cutoff?
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eferrer" target="_blank">http://forums.matronics.com
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errer" target="_blank">http://wiki.matronics.com
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-Matt Dralle, List Admin.
rel="noreferrer" target="_blank">http://www.matronics.com/contribution
===========
|
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Kelly McMullen
Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ
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| Posted: Tue Jun 14, 2016 7:06 pm Post subject: Wet Dog Syndrome On Shutdown |
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Pull the throttle back to idle. Should be at or less than 1000 rpm. Then go to ICO. Should shutdown quickly and smoothly, assuming it idles smoothly.
-sent from the microchip implanted in my forearm
On Tue, Jun 14, 2016 at 3:41 PM, Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)> wrote:
| Quote: | --> RV10-List message posted by: Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)>
Hey Deems!
Yes, what I feel to be excessive shaking of the engine at shutdown. It does not run on.
Been following the Lyc recommended shutdown at 1200 rpm then ICO. Shaking like crazy with that procedure. I've read other shutdown suggestions on the interwebs, but can't find anything that works, which leads me to believe it's some kind of isolator issue or something.
-Sean
| Quote: | Deems Davis <mailto:deemsdavis(at)cox.net (deemsdavis(at)cox.net)>
June 14, 2016 at 5:31 PM
Sean,
Are referring to excessive(?) physical shaking/vibration of the engine (at) shutdown, or are you more concerned about the engine not shutting down promptly and 'running on'?
Deems
|
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errer" target="_blank">http://wiki.matronics.com
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Kelly McMullen
A&P/IA, EAA Tech Counselor
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Kellym
Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ
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| Posted: Tue Jun 14, 2016 7:10 pm Post subject: Wet Dog Syndrome On Shutdown |
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Your mixture should give a 50 rpm rise if you pull mixture slowly to
cutoff. If more, too rich. If less, too lean.
Shouldn't make any difference where it is set, you should still get
cutoff when mixture is pulled to the stop.
On 6/14/2016 6:45 PM, Sean Stephens wrote:
| Quote: |
I assume what that would tell me is if I have the mixture properly set
on the servo to REALLY be at idle cutoff?
> Jesse Saint <mailto:jesse(at)saintaviation.com>
> June 14, 2016 at 7:05 PM
>
>
> Instead of.
>
> Jesse Saint
> Saint Aviation, Inc.
> 352-427-0285
> jesse(at)saintaviation.com
>
> Sent from my iPad
>
|
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
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schmoboy
Joined: 26 Feb 2006
Posts: 130
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| Posted: Tue Jun 14, 2016 8:19 pm Post subject: Wet Dog Syndrome On Shutdown |
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Sorry, but I am confused.
The engine does stop, obviously, just not without doin' the shake. Are
you saying it may be set too rich, causing it to still fire during shutdown?
| Quote: | Kelly McMullen <mailto:kellym(at)aviating.com>
June 14, 2016 at 10:09 PM
Your mixture should give a 50 rpm rise if you pull mixture slowly to
cutoff. If more, too rich. If less, too lean.
Shouldn't make any difference where it is set, you should still get
cutoff when mixture is pulled to the stop.
|
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Kelly McMullen
Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ
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| Posted: Wed Jun 15, 2016 2:21 am Post subject: Wet Dog Syndrome On Shutdown |
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It means not all cylinders quit firing at the same time. Whether that is mixture, ignition, or something else has to be determined. A slow mixture pull to cutoff will show what rise in rpm you get from the leaning, if any, to allow proper idle mixture adjustment. There can be problems with the flow divider fuel cutoff that lets one or more cylinders get fuel when the others have quit. You need to figure out by shutdown with mags, and a shutdown by slow mixture cutoff if the fuel flow is not stopping all at once, or if the problem is somewhere else.
-sent from the microchip implanted in my forearm
On Tue, Jun 14, 2016 at 9:19 PM, Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)> wrote:
| Quote: | --> RV10-List message posted by: Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)>
Sorry, but I am confused.
The engine does stop, obviously, just not without doin' the shake. Are you saying it may be set too rich, causing it to still fire during shutdown?
| Quote: | Kelly McMullen <mailto:kellym(at)aviating.com (kellym(at)aviating.com)>
June 14, 2016 at 10:09 PM
--> RV10-List message posted by: Kelly McMullen <kellym(at)aviating.com (kellym(at)aviating.com)>
Your mixture should give a 50 rpm rise if you pull mixture slowly to cutoff. If more, too rich. If less, too lean.
Shouldn't make any difference where it is set, you should still get cutoff when mixture is pulled to the stop.
|
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flying-nut(at)cfl.rr.com
Guest
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| Posted: Wed Jun 15, 2016 2:52 am Post subject: Wet Dog Syndrome On Shutdown |
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Almost all my aircraft engine experience is with 4 cylinders. When I finally get to run my new IO-540 ..... I'll be in unknown (for me) territory. The 'wet dog' shaking just might be normal ..... the term is terribly subjective. New engines, higher compression, and two more cylinders than we're used to might make the difference. Before going through all the testing that's been suggested here, I think another couple pairs of eyes to watch the shutdown might be more productive. I can imagine that soft tires and stock gear (without the stiffeners) might allow the airframe to rock more violently than the converse, allowing the owner to feel that the activity was more violent than it should be. I would find another RV-10 owner with plenty of hours in the logs physically compare the activity before chasing down problems that aren't there.
Linn
On 6/15/2016 6:20 AM, Kelly McMullen wrote:
| Quote: | It means not all cylinders quit firing at the same time. Whether that is mixture, ignition, or something else has to be determined. A slow mixture pull to cutoff will show what rise in rpm you get from the leaning, if any, to allow proper idle mixture adjustment. There can be problems with the flow divider fuel cutoff that lets one or more cylinders get fuel when the others have quit. You need to figure out by shutdown with mags, and a shutdown by slow mixture cutoff if the fuel flow is not stopping all at once, or if the problem is somewhere else.
-sent from the microchip implanted in my forearm
On Tue, Jun 14, 2016 at 9:19 PM, Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)> wrote:
| Quote: | --> RV10-List message posted by: Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)>
Sorry, but I am confused.
The engine does stop, obviously, just not without doin' the shake. Are you saying it may be set too rich, causing it to still fire during shutdown?
| Quote: | Kelly McMullen <mailto:kellym(at)aviating.com (kellym(at)aviating.com)>
June 14, 2016 at 10:09 PM
--> RV10-List message posted by: Kelly McMullen <[url=mailto:kellym(at)aviating.com]kellym(at)aviating.com (kellym(at)aviating.com)[/url]>
Your mixture should give a 50 rpm rise if you pull mixture slowly to cutoff. If more, too rich. If less, too lean.
Shouldn't make any difference where it is set, you should still get cutoff when mixture is pulled to the stop.
|
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eferrer" target="_blank">http://forums.matronics.com
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errer" target="_blank">http://wiki.matronics.com
===========
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     -Matt Dralle, List Admin.
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===========
|
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Kelly McMullen
Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ
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| Posted: Wed Jun 15, 2016 5:37 am Post subject: Wet Dog Syndrome On Shutdown |
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Well, I agree with having an experienced observer, I don't agree about differences with 4 cyl. I have about 800 hours in 200 hp Mooney and other 200 hp Lyc powered planes. They all have 8.7 to 1 compression, rather than the 540 stock 8.5 to 1 pistons. They all shake a lot more on shutdown than does my IO-540. I don't know if it makes any difference that my 540 has flow balanced cylinders, and I have 3 blade MT prop.
-sent from the microchip implanted in my forearm
On Wed, Jun 15, 2016 at 3:51 AM, Linn Walters <flying-nut(at)cfl.rr.com (flying-nut(at)cfl.rr.com)> wrote:
| Quote: | Almost all my aircraft engine experience is with 4 cylinders. When I finally get to run my new IO-540 ..... I'll be in unknown (for me) territory. The 'wet dog' shaking just might be normal ..... the term is terribly subjective. New engines, higher compression, and two more cylinders than we're used to might make the difference. Before going through all the testing that's been suggested here, I think another couple pairs of eyes to watch the shutdown might be more productive. I can imagine that soft tires and stock gear (without the stiffeners) might allow the airframe to rock more violently than the converse, allowing the owner to feel that the activity was more violent than it should be. I would find another RV-10 owner with plenty of hours in the logs physically compare the activity before chasing down problems that aren't there.
Linn
On 6/15/2016 6:20 AM, Kelly McMullen wrote:
| Quote: | It means not all cylinders quit firing at the same time. Whether that is mixture, ignition, or something else has to be determined. A slow mixture pull to cutoff will show what rise in rpm you get from the leaning, if any, to allow proper idle mixture adjustment. There can be problems with the flow divider fuel cutoff that lets one or more cylinders get fuel when the others have quit. You need to figure out by shutdown with mags, and a shutdown by slow mixture cutoff if the fuel flow is not stopping all at once, or if the problem is somewhere else.
-sent from the microchip implanted in my forearm
On Tue, Jun 14, 2016 at 9:19 PM, Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)> wrote:
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Kelly McMullen
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schmoboy
Joined: 26 Feb 2006
Posts: 130
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| Posted: Wed Jun 15, 2016 6:01 am Post subject: Wet Dog Syndrome On Shutdown |
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I will perform the two tests and report back.
Thanks,
-Sean
| Quote: | Kelly McMullen <mailto:apilot2(at)gmail.com>
June 15, 2016 at 5:20 AM
It means not all cylinders quit firing at the same time. Whether that
is mixture, ignition, or something else has to be determined. A slow
mixture pull to cutoff will show what rise in rpm you get from the
leaning, if any, to allow proper idle mixture adjustment. There can be
problems with the flow divider fuel cutoff that lets one or more
cylinders get fuel when the others have quit. You need to figure out
by shutdown with mags, and a shutdown by slow mixture cutoff if the
fuel flow is not stopping all at once, or if the problem is somewhere
else.
-sent from the microchip implanted in my forearm
|
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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schmoboy
Joined: 26 Feb 2006
Posts: 130
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| Posted: Fri Jun 17, 2016 12:38 pm Post subject: Wet Dog Syndrome On Shutdown |
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After testing the other night at the hangar, the idle mixture was too
rich at about 150 rpm, rise. I got it set correctly now at 50 rpm
rise. That helped a little on the shutdown shake.
But...
I discovered another issue that I thought I'd tackled a while ago. The
top passenger side engine mount seems to be "knocking" again. Early on
it was doing this and I had found out I needed another washer because
the nut was running out of threads and wouldn't fully "Stack up" with
the spacer inside the Lord mount. Well, know that the shutdown is
cleaner I can now hear the knocking again. I think it is the spacer
inside the mount hitting the sides of the durometer inside. At least
that's the only thing I can think of it doing. I don't know if it's an
alignment issue or what, because it is only the one mount, not all
four. I placed my hand on the mount when it was at idle and you can
feel the knocking. It also resonates through the engine mount and you
can hear it inside the cabin.
I have a call into Lord to ask some questions. I am wondering if I need
the J-3804-28 (which has a different silicone/rubber wrapped spacer
inside) instead of the J-3804-20. I am hoping I don't as they are about
$250 each. I just can' figure out why only one is having the issue.
Unless it's the weak link and is flexing the most during
idle/start/shutdown.
-Sean #40303 (it never ends)
| Quote: | Kelly McMullen <mailto:apilot2(at)gmail.com>
June 15, 2016 at 5:20 AM
It means not all cylinders quit firing at the same time. Whether that
is mixture, ignition, or something else has to be determined. A slow
mixture pull to cutoff will show what rise in rpm you get from the
leaning, if any, to allow proper idle mixture adjustment. There can be
problems with the flow divider fuel cutoff that lets one or more
cylinders get fuel when the others have quit. You need to figure out
by shutdown with mags, and a shutdown by slow mixture cutoff if the
fuel flow is not stopping all at once, or if the problem is somewhere
else.
-sent from the microchip implanted in my forearm
|
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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schmoboy
Joined: 26 Feb 2006
Posts: 130
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| Posted: Fri Jun 24, 2016 5:47 pm Post subject: Wet Dog Syndrome On Shutdown |
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A final update on this.
After talking to Lord, the indication was that I had a mount (top
passenger side) that had run its cycle. I couldn't get a good answer on
what the lifetime of a mount should be. I assume there's too many
variables. I also don't recall checking the cure date stamped on the
box when I originally mounted the engine three years ago. I'm guessing
that Vans stock may not be the "freshest" in that regard.
I got new mounts installed and the extra shake and "knocking" at idle
and shutdown is gone. I can't believe the difference. I noted that
even the "new" mounts I purchased from ACS had a cure date of 1/2015, so
even they were over a year old in the box.
Anyway, I'm a happy camper now.
-Sean #40303 (shake free)
| Quote: | Sean Stephens <mailto:sean(at)stephensville.com>
June 17, 2016 at 3:37 PM
After testing the other night at the hangar, the idle mixture was too
rich at about 150 rpm, rise. I got it set correctly now at 50 rpm
rise. That helped a little on the shutdown shake.
But...
I discovered another issue that I thought I'd tackled a while ago.
The top passenger side engine mount seems to be "knocking" again.
Early on it was doing this and I had found out I needed another washer
because the nut was running out of threads and wouldn't fully "Stack
up" with the spacer inside the Lord mount. Well, know that the
shutdown is cleaner I can now hear the knocking again. I think it is
the spacer inside the mount hitting the sides of the durometer
inside. At least that's the only thing I can think of it doing. I
don't know if it's an alignment issue or what, because it is only the
one mount, not all four. I placed my hand on the mount when it was at
idle and you can feel the knocking. It also resonates through the
engine mount and you can hear it inside the cabin.
I have a call into Lord to ask some questions. I am wondering if I
need the J-3804-28 (which has a different silicone/rubber wrapped
spacer inside) instead of the J-3804-20. I am hoping I don't as they
are about $250 each. I just can' figure out why only one is having
the issue. Unless it's the weak link and is flexing the most during
idle/start/shutdown.
-Sean #40303 (it never ends)
|
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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