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john_graham
Joined: 09 Aug 2007
Posts: 45
Location: Algonquin, IL
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 Posted: Sun Nov 09, 2008 5:03 am Post subject: Primer line leak |
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While doing a simple engine check with the cowling off after an oil change, my A&P was watching the starting sequence from the left side of the airplane. During the priming stage (3 shots), he noticed fuel squirting our of the primer line on tot he back of the generator. I am certain had this occurred on most GA aircraft there very well could have been an engine fire. Simple diagnosis - a bad line that had cracked over the years. Please make sure you check your primer line (and all other lines) regularly as a visual inspection of this line at annual did not reveal this defect. A great way to check the primer line (other than visually) is to simply watch it while someone primes the engine a few shots. A quick call to Jill at M-14P, Inc. and a new line was on its way to me same day.
John P. Graham
CubFlyer1940(at)Yahoo.com
Cell phone (630) 390-9451
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_________________
John Graham
N15YK 1993 Yak-52
CubFlyer1940@Yahoo.com
(847) 641-1330 |
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dsavarese0812(at)bellsout
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| Posted: Sun Nov 09, 2008 5:16 am Post subject: Primer line leak |
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John,
This is not an uncommon problem with the primer hose on the 52. I have seen this on several aircraft. For whatever reason, the primer hose seems to deteriorate more quickly than the other flexible hoses. Most of the hoses that failed fail closest the end of the hose that attaches to the firewall. It may be due to a concentration of heat in top, right rear section of the cowling.
Dennis
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