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Vacuum leak...at fuel injector?? 200 1986

uid 4704's pic
posted by  Blane Gardner on  Tue Oct 28 12:56 CST 2003
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last visit: Wed Jan 20 01:30 CST 2010
[RELATED]

My kid's 86 244 is idling like crap. I put a vacuum gage on and it showed bad vacuum. I could hear a hissing sound while idling and I started to spray some carb cleaner around to find the leak. It seems to be from around #1 cylinder injector. If I spray the carb cleaner right where the injector goes into the intake manifold the vacuum gets way better and the engine revs up. To me, this seems to indicate the vacuum leak is at the injector. I'm thinking that if I pull the injector and replace the O-rings I have a good chance of fixing the problem. Of course, If I go that far, I may as well replace the O-rings on all the injectors so I don't have to do this again anytime soon.

What do you think? Is it possible to have a vacuum leak at the injector? If so, should replacing the O-rings cure the problem? Any input appreciated.
--
Blane Gardner Couple of Volvos, a Toyota Van, and a Couple of Old Chebbies






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