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Old 06-11-2009, 06:48 PM
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Help me get my vortec back running!

I just replaced the intake manifold gasket in my truck, its a 1997 chevy silverado with a 5.0 vortec motor.

I need some help re installing the distributor I dont know how to line it up correctly its running very roughly now, way out of time obviously.

I'm rather oldschool, not too keen with all these computer controls.

Please help I've got no wheels to get to work!!!

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Old 06-11-2009, 07:48 PM
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Put a timing light on it.... Go buy one. They are like $40. It is good to have.

To get you to work, turn the distro with the truck running until it runs smooth.
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Old 06-11-2009, 09:08 PM
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I guessing a 97 is the same as a 96 .
bring the marks to TDC there is a mark on the damper and one on the front cover , you may need a mirror to see it . It is at about 12 o clock . place the dist cap on the dist and make a mark on the dist at number 1 ,install the dist making sure the rotor is pointing to number 1 . If it is not aligned correctly the motor will still run but poorly . It sounds like you are a tooth out ,so bring the marks up and see which way you have to go . Don't spend your money on a timing light ,because there is no way to change the base timing it is done by the CPU . All the dist does in this application is point the electrons in the right direction . Hope this is helpful .
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Old 06-11-2009, 10:44 PM
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post 17 has the procedure to set the distributor.
some distributors are non-adjustable, if its off by just a little bit, there
is a work around in post 19.

GM 5.7L detonation on hot starts???
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Old 06-12-2009, 09:07 AM
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What confuses me is lining up the paint and the hash mark on the gear shaft and also lining up the rotor to point at the 8.

Do you line up the paint and mark and then removes the rotor and replace it in a fashion pointing at the 8 marked on the distributor housing.

Im confused.
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Old 06-12-2009, 07:55 PM
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you line up the paint mark before you drop the distributor in. the rotor should be in the postion shown in pic 2.
then when you drop the distributor in, the rotor will turn when it engages with the cam, and once the distributor is fully seated the rotor should line up with the 8 like it is in pic 3.
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Old 06-13-2009, 01:00 PM
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Got it dialed in today, runs good.

Soul hunter, thanks for the simple explanation big thumbs up.
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Old 06-13-2009, 01:34 PM
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no problem, glad to help
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