Low oil pressure, high dipstick level?

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03-13-2016, 11:56 AM

#16

Turbo X_J

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Year: My Jeep is a GMC

It's hard to believe a gallon of fuel in the crankcase would be noticeable "suddenly".

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03-13-2016, 12:53 PM

#17

jjz28

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Year: 1996

Model: Grand Cherokee

Engine: 5.2 318

This happens a lot on motorcycles when the float sticks. Somehow you have too much gas getting in one or more cylinders which I suppose you already know that. Your rings don't have to be bad for the gas to flow down to the crankcase. I would say one of your injectors have a problem.

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03-13-2016, 02:03 PM

#18

Savagekid25

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Year: 1989

Model: Cherokee

Engine: 4.0 I6

Quote:

Originally Posted by Turbo X_J

It's hard to believe a gallon of fuel in the crankcase would be noticeable "suddenly".

I'm sure it wasn't suddenly. I just didn't notice it until now.

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03-13-2016, 02:03 PM

#19

Savagekid25

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Year: 1989

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Quote:

Originally Posted by jjz28

I am hoping that is it. Will be testing soon.

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03-13-2016, 06:57 PM

#20

Savagekid25

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Year: 1989

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Engine: 4.0 I6

Injectors did not leak. I am lost again.

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03-13-2016, 10:37 PM

#21

Firestorm500

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Year: 2015, 2012

Model: Grand Cherokee (WK2)

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Long shots:

Carbon canister

Crankcase ventilation components

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03-14-2016, 12:33 AM

#22

Radi

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Model: Cherokee

Quote:

Originally Posted by Savagekid25

My plan is to pull the fuel rail, attach the injectors, turn the car on to pressurize it, and see if any injectors are leaking. I replaced the injectors with Bosch 703's about 18 months ago.

I'd check again with everything assembled, using a fuel pressure gauge and the injectors hot.
They should hold pressure for ~30 minutes before dropping below 30#