mass oil consumption

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Apr 11, 2009 | 07:45 PM

gweedoparker

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mass oil consumption

I have a 1995 f350 with a 7.3 and I replaced the oil pump that runs the injectors and the motor is consuming three gallons of oil a day. I talked with a couple of mechanics and they said to check the fuel to see if the fuel is dark. It was so they thought the o-rings on the injectors between the high pressure oil and fuel were leaking. I removed the head on the passenger side and replaced all o-rings on all four injectors. I put everything back together and there is no change on the oil consumption. Does anyone have any ideas.

Apr 11, 2009 | 07:55 PM

tjbeggs

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From: Silver Lake Dunes, MI

what about the drivers side o-rings? Also I hope you didn't actually pull the head? no need to do that!

BTW Welcome to FTE you have come to the right place to answer your questions!

Apr 11, 2009 | 08:16 PM

gweedoparker

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mass oil consumption

I removed the head because the mechanic that i took it to couldn't remove the glowplug on the rear cylinder, so I took this route. on this side i had three stock injectors and one aftermarket. the three stock injectors had ripped o rings between the oil and fuel. the aftermarket one had the new single o-ring where the stock injectors had one small round and 1/3 of a square oring left. I have read that the ipr valve should be replaced when the pump is replaced. i was going to try that before i removed the driver side head. Iwould rather remove the head than possibly suffer the hydralock situation.

Apr 11, 2009 | 09:11 PM

tjbeggs

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From: Silver Lake Dunes, MI

The IPR would not cause oil consumption. Do the other injector o-rings. They will certainly allow the oil to mix with fuel and vice versa.

Apr 11, 2009 | 09:47 PM

gweedoparker

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Is it possible for all seven o-rings to leak all of a sudden, or has the introduction of the reman oil pump increased the potential for the leak over. Have you heard of this situation before. thanks for your time.

Apr 11, 2009 | 09:53 PM

tjbeggs

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From: Silver Lake Dunes, MI

Its possible its due to the new pump. It doesn't take much of a leak to cause an issue though. If some were bad ont he side you have done the other side will need replacement too.

Apr 12, 2009 | 08:20 AM

gweedoparker

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Thanks for the advice......any other suggestions out there?

New question: What does the IPR valve do?

Thanks for any help out there!

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Apr 12, 2009 | 07:48 PM

plowhand

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From: Southwest Georgia

The IPR (Injector Pressure Regulator) valve controls the volume/pressure that the HPOP (High Pressure Oil Pump) puts out. Unless your IPR was bad you do not need to replace it with a pump change, just install new o-rings on it before putting it in the new pump. Also the IPR is very touch as far a dirt or lint goes so keep it clean and do not lay or wipe it with a rag.

Also as for the drivers side injector o-rings, I would just pull the injectors not the head. A down and dirty (not officially approved) way to remove the oil/fuel from inside of the cylinder after you pull injectors is to bump the engine over (remote start switch works best). This will shot (and I do mean shot) all of the fluid out of the cylinders through the injector holes so place a couple of towels, old blanket, etc over the head first, or you'll have fluid all over the hood and side of your truck.