No spark after rear main seal change

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Mar 27, 2014 | 10:08 PM

#16

MtnHermit

Seasoned Member

Joined: Dec 2009

Posts: 387

Likes: 2

From: Colorado

Year: 1997

Model: Cherokee

Quote:

Originally Posted by colehunter

I got her running again. I knew I had spark and fuel at the fuel line. But the Camshaft Position sensor was out of sync and shutting off the fuel injectors.

Be aware when you prime an oil pump manually by turning the oil pump you will also be turning the cam and putting it out of sync with the crank.

Good work but I'm curious about the crank/cam relationship.

Any engine I've worked on had the cam directly driven by the crank. So if turning the oil pump turns the cam, why didn't the cam then turn the crank and stay in sync?

Does anyone have a diagram of the 4.0 crank to cam drive?

Mar 28, 2014 | 08:24 AM

#17

CCKen

CF Veteran

Joined: Aug 2010

Posts: 8,357

Likes: 103

From: Canton, MI

Year: 1999

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by colehunter

I got her running again. I knew I had spark and fuel at the fuel line. But the Camshaft Position sensor was out of sync and shutting off the fuel injectors.

This is all you had to say mate.

Glad you got it fixed.