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04-05-2008, 12:44 AM
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#1 | |
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AF Newbie
Join Date: Apr 2008
Location: Holland Landing
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Low PSI (55) In 6th Cylinder
Hey guys having problems with this 95' chevy lumina I have recently have obtain i got it for free because it had been over heated 3 times(Long story guys an moron) Well we broke it down replaced the head and the cylinder is good but the pressure in the 6th cylinder is still only 55 psi only at idle
V6 3100 Engine has been rebuilt pretty much new... Anything but fixing the problem is not an option Can anyone help..? |
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04-05-2008, 01:52 PM
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#2 | |
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A990 racer
 Join Date: Mar 2002
Location: Chestertown, New York
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Re: Low PSI (55) In 6th Cylinder
Welcome to AF. 55 at idle, how was this determined?
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04-06-2008, 01:24 AM
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#3 | ||
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AF Regular
Join Date: Apr 2008
Location: Yuma, Arizona
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Re: Low PSI (55) In 6th Cylinder
Quote:
Craig |
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04-06-2008, 09:52 AM
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#4 | |
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A990 racer
Join Date: Mar 2002
Location: Chestertown, New York
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Re: Low PSI (55) In 6th Cylinder
No it has not.
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04-08-2008, 01:01 PM
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#5 | |
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AF Newbie
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Re: Low PSI (55) In 6th Cylinder
Whats AF? um im not really mechanically inclined its my dad and his buddy trying to fix it his buddy is a mechanic they have tried everything they could think of ... the engine was recently rebuilt (Paid for by the former owner).. They used some sort of gauge to detrimen the PSI if thats what you mean.. but as soon as they give it the gas it seals off and the pressure goes back to normal
There next guess is that it was when they rebuilt the engine one of the lobes on the camshaft was off ... I hope i make sense if you need a more mechanical explanation ill get by dad to write one but his not very good with computers i figured i would ask around on some forums see if anyone had any ideas cause quite frankly they are out of them... |
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04-08-2008, 01:21 PM
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#6 | ||
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AF Enthusiast
Join Date: Jun 2004
Location: Chicoutimi Quebec
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Re: Low PSI (55) In 6th Cylinder
Quote:
At idle, you have partial vacuum at intake manifold so it will not boost the pressure to the "atmospheric" compression ratio.
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'93 Ponty Transport 3.8; 2011 SUzuki SX4 AWD (wife's) ; 2015 Sorento 2.4 AWD 1928 Graham Paige Model 629 I don't believe in miracles. |
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