Subject	Vacuum reading at idle is OK with EGR leaking but...
Posted by	Zarcasm(Hfd, CT) on October 11, 2009 at 12:16 AM
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In Reply To	I agree if the plenum is leaking air that would effect>>> posted by ZUL8TR on October 10, 2009 at 07:27 PM
Message	... does that really prove that I don't have an air leak significant enough to hurt performance? Here's an old link showing my vacuum test results again. I can't seem to figure out why I'm loosing power at lower rpms (or at high power, who knows?). The power band is not continuous --no spikes or dips-- going from idle to max power. Shouldn't power be rather continuous from idle up to WOT? The only thing outstanding right now is the CAS. Thanks for the comprehensive vacuum link. (Another link documenting that even a new EGR valve leaks some amount)
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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