How can I check timing without tearing front of.

VICSWIFE

MEMBER
1999 PONTIAC GRAND AM
105,000 MILES

How can I check timing without tearing front of motor apart?

Wednesday, January 4th, 2012 AT 2:21 AM

7 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Which motor?

Roy

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Wednesday, February 13th, 2019 AT 7:49 PM

VICSWIFE

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4 POSTS

Its a 3.4

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Wednesday, February 13th, 2019 AT 7:49 PM

ASEMASTER6371

MECHANIC
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You could remove number 1 plug and move the piston to top dead center.
Then remove the valve cover to verify the valves for that cylinder are both closed.
Before going there, what is the problem you have?

Roy

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Wednesday, February 13th, 2019 AT 7:49 PM

VICSWIFE

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4 POSTS

I have #6 intake full of gas

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Wednesday, February 13th, 2019 AT 7:49 PM

ASEMASTER6371

MECHANIC
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Ok, you may have a stuck injector that may need to be replaced. I would check this first before going any further with the timing.

Roy

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Wednesday, February 13th, 2019 AT 7:49 PM

VICSWIFE

MEMBER
4 POSTS

Ok, Im going to take my husbands place on here for a moment. Long story short, my car had a bent valve. ( He didnt check the timing before putting the heads on) He put remanufactured heads on. Put everything back together. And the car would turn over, but not start. We would get a backfire from the intake. Thats what propmted him to ask about the timing.

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Wednesday, February 13th, 2019 AT 7:49 PM

ASEMASTER6371

MECHANIC
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There are different size push rods and if they are put in wrong, it will bend a valve. You need a compression test on that cylinder to verify that it has the ability to work.

Roy

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Wednesday, February 13th, 2019 AT 7:49 PM