Subject	I'm still not sure there's an air leak worth worrying about
Posted by	Zarcasm(Hfd, CT) on October 12, 2009 at 10:24 PM
	This message has been viewed 371 times.
In Reply To	IMHO, your EGR valve should not leak at 1 psi. posted by canyoncarver on October 12, 2009 at 07:57 PM
Message	Here's the current score: Vacuum gauge test indicates normal-high vacuum at idle --no air leaks. FSM PCV test indicates engine rpm remains fixed --no air leaks. Pressurizing the plenum I can't hold more than 1 psi, most significant air leak comes from the stem of the EGR valve --some leak. Thanks for the carb cleaner (or better yet starting fluid) recommendation.
Follow Ups	Is the EGR valve stem supposed to leak?? - Zarcasm(Hfd, CT) 23:59:48 10/09/09 Check the EGR with vacuum since that is the signal that >>> - ZUL8TR 07:53:47 10/10/09 Actuating vacuum is not the problem - Zarcasm(Hfd, CT) 14:42:56 10/10/09 I agree if the plenum is leaking air that would effect>>> - ZUL8TR 19:27:04 10/10/09 Vacuum reading at idle is OK with EGR leaking but... - Zarcasm(Hfd, CT) 00:16:02 10/11/09 That old link for vacuum test was a deja vu for me... - ZUL8TR 08:01:48 10/11/09 I'm not buying Leaky Valve Guides yet... - Zarcasm(Hfd, CT) 09:25:51 10/11/09 OK let's hope not..................>>>>>>>>>>>>>>>. - ZUL8TR 06:28:56 10/12/09 Timing problems are a possibility but... - Zarcasm(Hfd, CT) 15:20:15 10/12/09 Speaking of fuel pressure. - canyoncarver 08:35:34 10/13/09 Internal fuel leak? Good question! - Zarcasm(Hfd, CT) 19:36:34 10/13/09 Internal fuel leak? Good question! - Zarcasm(Hfd, CT) 21:20:07 10/13/09 Valve Cover Oil Cap Diagnostic Test is Inconclusive - Zarcasm(Hfd, CT) 15:40:14 10/12/09 Wow! this is getting like an Agatha Cristy Mystery>>> - ZUL8TR 08:12:48 10/13/09 Yeah. EGR operation checks good but valve cover vacuum??? - Zarcasm(Hfd, CT) 19:31:07 10/13/09 Still strange that you do not get a reduced vacuum >>> - ZUL8TR 07:24:19 10/14/09 If you don't, it could help quite a bit if you had - canyoncarver 08:51:04 10/14/09 Tell me about it! - Zarcasm(Hfd, CT) 20:34:03 10/14/09 PS have you checked the coolant thermostat>> - ZUL8TR 08:22:42 10/13/09 Coolant Temp Sensor is good - Zarcasm(Hfd, CT) 19:03:08 10/13/09 Where do the vac lines run on the EGR? - d_flore 14:21:31 10/10/09 a vac line from the egr valve runs to the egr solenoid - ali300zx 20:54:38 10/10/09 IMHO, your EGR valve should not leak at 1 psi. - canyoncarver 19:57:51 10/12/09 I'm still not sure there's an air leak worth worrying about - Zarcasm(Hfd, CT) 22:24:11 10/12/09
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