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Gazoo
Joined: 01 Jun 2016
Posts: 3
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 Posted: Sun Jun 05, 2016 10:24 am Post subject: High idle |
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Hello everyone
New Yak 52 owner on the list. I was advised that this would be a good forum to discuss all things Yak and more because someone here has probably experienced or seen it before. So here goes.
After the last flight, I was not able to get the engine to idle any lower that 40%. Subsequent run-ups indicate the problem is still there. Just wondering if anyone has experienced this before.
Also, would anyone know where one could obtain a tool kit for the Yak 52. The previous owner did not have one.
Thank you
Stefan
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Stefan Corriveau
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jbsoar(at)gmail.com
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| Posted: Sun Jun 05, 2016 10:37 am Post subject: High idle |
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Stefan-It is quite possible that the outer part of the throttle push-pull housing moved in it's clamp, or the clamp may have moved on the engine mount tube. Sometimes a thin shim is required to prevent the clamp ears from being bolted tightly together, allowing the clamp to tightly grip the outer housing or engine mount, respectively. Â
John B
On Sun, Jun 5, 2016 at 11:24 AM, Gazoo <stefancorriveau(at)hotmail.com (stefancorriveau(at)hotmail.com)> wrote:
| Quote: | --> Yak-List message posted by: "Gazoo" <stefancorriveau(at)hotmail.com (stefancorriveau(at)hotmail.com)>
Hello everyone
New Yak 52 owner on the list. I was advised that this would be a good forum to discuss all things Yak and more because someone here has probably experienced or seen it before. So here goes.
After the last flight, I was not able to get the engine to idle any lower that 40%. Subsequent run-ups indicate the problem is still there. Just wondering if anyone has experienced this before.
Also, would anyone know where one could obtain a tool kit for the Yak 52. The previous owner did not have one.
Thank you
Stefan
--------
Stefan Corriveau
stefancorriveau(at)hotmail.com (stefancorriveau(at)hotmail.com)
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jackpot
Joined: 13 Jul 2010
Posts: 65
Location: Las Vegas, Nevada
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| Posted: Sun Jun 05, 2016 11:33 am Post subject: High idle |
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Stefan:: I had that happen long ago. What caused it was a n air leak in the induction system. The engine had drain tubes installed in the three lower intake tubes. One of the fittings had broken which caused a leak in the induction system. As soon as I put a temporary plug in the fitting the idle went back to 26%. When it was leaking I think the idle would not come down under about 38%. Or close to that value.
Also you might check the tightness of the induction tube gland nuts. Also gaskets wherE the tubes connect to the Cyls. Could also be a cracked induction tube. Good hunting
Gary. LAS. CJ22YK
Sent from my iPad
On Jun 5, 2016, at 11:36, John B <jbsoar(at)gmail.com (jbsoar(at)gmail.com)> wrote:
| Quote: | Stefan-It is quite possible that the outer part of the throttle push-pull housing moved in it's clamp, or the clamp may have moved on the engine mount tube. Sometimes a thin shim is required to prevent the clamp ears from being bolted tightly together, allowing the clamp to tightly grip the outer housing or engine mount, respectively.
John B
On Sun, Jun 5, 2016 at 11:24 AM, Gazoo <stefancorriveau(at)hotmail.com (stefancorriveau(at)hotmail.com)> wrote:
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