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Discussing Oil pressure in my 351C in the 5.0 Mustangs Forum. I have a pinto with a 351C in it. It run's 80lbs of oil ... Modded Mustangs is the premier Ford Mustang Forum on the internet. We discuss all aspects of the Ford Mustang on the forum. Registered Users do not see the above ads. Please Register - It's Free! |
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June 17th, 2008, 02:07 PM
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#1 |
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Newbie
Join Date: May 2007
Posts: 47
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Oil pressure in my 351C
I have a pinto with a 351C in it. It run's 80lbs of oil pressure at idle, but when you snap the throttle the oil pressure goes down instead of up. It seem's to be very unstable off of idle. any suggestions would be great. I have put new oil in and still has the same problem. I am running royal purple 5-30 Thanks Kevin.
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June 17th, 2008, 02:13 PM
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#2 |
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Regular
1982 GT t-top
no proof of purchase
Join Date: May 2008
Location: catty PA
Posts: 232
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maybe your oil pressure sender is tweaking out
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June 17th, 2008, 04:29 PM
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#3 |
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MM Fanatic
Join Date: May 2007
Location: Bloomington, IL
Posts: 3,768
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pressure relief in the pump could be stuck or the sending unit has taken a crap.
80 lbs of pressure is not a good thing.
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89 LX 515 hp 497 ftlbs 11.3 @ 125 mph 88 GT 11.4 @ 118 
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June 17th, 2008, 05:18 PM
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#4 | |
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Enthusiast
Nowhere to be found
Join Date: Nov 2006
Location: Moving back home to Florida
Posts: 630
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+1 I'd say 65 at highest
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Well, guys its been real and its been fun, but it hasn't been real fun for me the past 3 months. Money has been tight and need to cancel my cable service to save what I can. I hope to chat with ya'll in 6-7 months from now. Bye! 
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June 17th, 2008, 05:50 PM
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#5 | |
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Hardcore Enthusiast
Join Date: Oct 2007
Location: utah
Posts: 1,163
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what kind of guage do you have?...electronic?
go and buy a mechanical one and see waht your readings are
__________________
 In Memory of Nick Goris.
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June 17th, 2008, 06:43 PM
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#6 |
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Regular
1989 LX Vert - 1993 Notch
Fast
Join Date: May 2008
Location: Houston
Posts: 346
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+1, hook up a mechanical gauge and start from there.
Most engines should see about 20psi at idle and 60psi at WOT no more.
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 The last President elected in anger of previous President was ....... Jimmy Carter God Help Us |
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June 17th, 2008, 07:05 PM
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#7 | |
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Enthusiast
1983 mustang lx
Join Date: Apr 2008
Posts: 504
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only diesel motors should have around 70-80 psi at or around idle haha |
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June 17th, 2008, 09:33 PM
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#8 |
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Newbie
Join Date: May 2007
Posts: 47
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I have a mechanical guage. That is why I am so concerned. if it was electric It would not bother me to much. Thanks for all your help.
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June 17th, 2008, 10:43 PM
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#9 | |
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Hardcore Enthusiast
Join Date: Oct 2007
Location: utah
Posts: 1,163
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well my second guess would be maybe one of your gallies are plogged, or there is some type ok blockage
or like ryan said, your pressure realief valve could be stuck
__________________
In Memory of Nick Goris.
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