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working with vacuum gauge


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zoggnoff
User

Jul 3, 2009, 3:29 PM

Post #26 of 28 (1760 views)
  post locked   Re: working with vacuum gauge  

changed the front three plugs, no effect on how it ran.
currently getting a p0401 code.
so definitely need to check the valve and stuff... but could that code just be a result of having a low vacuum reading of 14 in-hg?
engine was knocking.

I have some new silicone tubing on order to replace vacuum lines, will have soon, i figure once that arrives i will clean out the metal parts of the tubing on the vac system with wire pipe cleaner brush and some carb spray, also sometime on that day test the vac system integrity itself with the pump etc etc.

what do you think?


carsinsc
New User

Sep 21, 2010, 10:19 PM

Post #27 of 28 (1646 views)
  post locked   Re: working with vacuum gauge  

Have you done a compression test on this motor? If it was overheated, you may have low compression causing your problems. A leak down test would help verify wether your valves are sealing properly. Start with the basics before you throw a bunch of money at a problem that can't be fixed by just replacing parts. Poor compression = poor running.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Sep 22, 2010, 12:19 AM

Post #28 of 28 (1643 views)
  post locked   Re: working with vacuum gauge  

carsinsc: This thread is well over a year old. Welcome to the site but take note of the dates of the threads,

T







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