rexjan(at)bigpond.com
Guest
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 Posted: Wed Mar 21, 2007 8:45 pm Post subject: Carby Flooding |
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A couple of days ago I wrote re my back carby flooding every few weeks.
Thanks for the comments some of which I may look into but in the meantime
I decided to take another look in the carb bowls etc even though I was not
having trouble at the moment. I found some little black spots that just
disolved as soon as soon as you went near them. If you put your finger on
them you got black on your finger. Certainly didn't seem like anything to
cause flooding. I was expecting hard grit or something. another strange
thing was it was only in the rear carby bowl.
Anyway apart from this I reasoned that the problem should be coming from
after the filter so I determined to change the hoses after the filter. All
these are on the engine side of the firewall and thus covered in heat proof
sleeves. I found all of them were that Mil 6000 stuff that was banned
and also supposed to be changed out by a LAME in my plane. It now turns
out he changed all visible hoses only. Guess that's a good reason to do
your own maintainence.
Well it may take months of no trouble [ I hope ] to see if this was the
cause so that's why I'm now reporting what I found.
It looks like that Mil spec rubber fuel line really is rubbish. I would
have thought if it was Mil spec it would be good. I couldn't make up my
mind what to replace it with but in the end I've gone with automotive
rubber stuff. I wasn't sure about the plastic lines like Tygon and Bing
firewall forward. They seem to be OK up to 200 to 250 deg F but is that
enough ?
Thanks again for the comments
Rex.
rexjan(at)bigpond.com
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