Has anyone ever heard of this???

brent_cosenza · April 6th, 2007, 01:41 PM

ok if you seen my other post then you seen what my car was doin if not check it out and let me know what you think....anyhow this is what i was asking have any of you guys heard of oil pressure going below 6psi causing the engine to not have compression? a mechanic at a ford dealer told me this but i didnt know if he was full of shit or not...please let me know

DrHolliday · April 6th, 2007, 02:50 PM

It would still have compression, but I know most gm cars have an oil pressure safety switch. If the pressure gets too low it turns off the fuel. I don't know if ford has the same thing though.

zkid01 · April 6th, 2007, 08:54 PM

I dont know about that one... you should still have compression even with out oil pressure... but that is some low oil pressure, need to look into that.

Baneful · April 6th, 2007, 09:08 PM

Weird. Maybe the rings got damaged from no oil getting to them and caused a loss of compression. I have heard of putting a little oil down the plug hole between compression tests and if it rises with the oil, the rings are bad.

I would ask the mechanic if it's ok to try that before you do though.

KhaosGT · April 7th, 2007, 01:17 AM

Oil pressure is generated by a oil pressure regulating valve and your oil pump...compression is created when your pistons cycle inside the cylinders...the two have nothing to do with each other

April 6th, 2007, 01:41 PM	#1
brent_cosenza Newbie Join Date: Mar 2007 Location: GA Posts: 30 iTrader: 0 reviews	Has anyone ever heard of this??? ok if you seen my other post then you seen what my car was doin if not check it out and let me know what you think....anyhow this is what i was asking have any of you guys heard of oil pressure going below 6psi causing the engine to not have compression? a mechanic at a ford dealer told me this but i didnt know if he was full of shit or not...please let me know __________________ 2002 Redfire Metallic Ford Mustang GT - 5.4 2V, Steeda CAI, Bassani X-pipe, 24lb. inj., 4.10 gears, 75mm TB, UDP's, Ported Plenum, AWAITING DYNO NUMBERS AND TUNE!!!!!

April 6th, 2007, 02:50 PM	#2
DrHolliday Enthusiast Join Date: Mar 2007 Location: New Port, NC Posts: 717 iTrader: 0 reviews	It would still have compression, but I know most gm cars have an oil pressure safety switch. If the pressure gets too low it turns off the fuel. I don't know if ford has the same thing though. __________________ Mustangless atm 2006 2500 HD Diesel. Built allison trans and other goodies

April 6th, 2007, 08:54 PM	#3
zkid01 Enthusiast Join Date: Apr 2007 Location: Pearl Harbor, HI Posts: 606 iTrader: 0 reviews	I dont know about that one... you should still have compression even with out oil pressure... but that is some low oil pressure, need to look into that. __________________ Work Hard....Play Harder.

April 7th, 2007, 01:17 AM	#5
KhaosGT Enthusiast 2004 Mustang GT Join Date: Jan 2007 Location: Fort Worth, TX Posts: 970 iTrader: 0 reviews	Oil pressure is generated by a oil pressure regulating valve and your oil pump...compression is created when your pistons cycle inside the cylinders...the two have nothing to do with each other __________________ 2004 Black Mustang Gt When I see a 5.0...I respect my elders.

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April 6th, 2007, 09:08 PM	#4
Baneful Regular Join Date: Feb 2007 Location: Las Vegas Posts: 117 iTrader: 0 reviews	Weird. Maybe the rings got damaged from no oil getting to them and caused a loss of compression. I have heard of putting a little oil down the plug hole between compression tests and if it rises with the oil, the rings are bad. I would ask the mechanic if it's ok to try that before you do though.

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