Low oil pressure, high dipstick level?

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Mar 13, 2016 | 11:56 AM

#16

Turbo X_J

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Joined: Sep 2009

Posts: 8,567

Likes: 20

From: ☼ Blackhole Sun

Year: My Jeep is a GMC

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

Mar 13, 2016 | 12:53 PM

#17

jjz28

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Joined: Sep 2010

Posts: 22

Likes: 0

From: oak hill, wv

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.

Mar 13, 2016 | 02:03 PM

#18

Savagekid25

Thread Starter

Junior Member

Joined: Aug 2010

Posts: 54

Likes: 0

From: Green Bay, Wisconsin

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.

Mar 13, 2016 | 02:03 PM

#19

Savagekid25

Thread Starter

Junior Member

Joined: Aug 2010

Posts: 54

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From: Green Bay, Wisconsin

Year: 1989

Model: Cherokee

Engine: 4.0 I6

Quote:

Originally Posted by jjz28

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

Mar 13, 2016 | 06:57 PM

#20

Savagekid25

Thread Starter

Junior Member

Joined: Aug 2010

Posts: 54

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From: Green Bay, Wisconsin

Year: 1989

Model: Cherokee

Engine: 4.0 I6

Injectors did not leak. I am lost again.

Mar 13, 2016 | 10:37 PM

#21

Firestorm500

CF Veteran

Joined: Apr 2009

Posts: 4,734

Likes: 12

Year: 2015, 2012

Model: Grand Cherokee (WK2)

Engine: 3.6L

Long shots:

Carbon canister

Crankcase ventilation components

Mar 14, 2016 | 12:33 AM

#22

Radi

CF Veteran

Joined: Apr 2012

Posts: 5,302

Likes: 23

From: Wisconsin

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#