I can not get my 5.7 timed

Asked by Feb 26, 2015 at 11:59 AM about the 1996 Chevrolet C/K 2500 Cheyenne Standard Cab LB

Question type: Maintenance & Repair

No. 1 tdc, dist lined up on marks,
Oil pump shaft slot set correct,
Scan tool says  -22.5

11 Answers

595

you can be setting it on compression side. so you are a round off. take your dist out turn crank shaft until no. 1 comes back up. then put dist back in.

148,385

http://www.cargurus.com/Cars/Discussion-t2359_ds637798

1 out of 1 people think this is helpful.
148,385

http://answers.edmunds.com/question-1999-Chevy-Suburban-5-7L-timing-problems-152776.aspx

148,385

I put those in separate windows to make it easy to hyperlink. Here is the key part: For the V8 5.7L-- After setting distributor, Then connect a scan tool. Monitor the Camshaft Retard Offset value. Important: If the Malfunction Indicator lamp is turned on after installing the distributor, and a DTC P1345 is found, the distributor has been installed incorrectly

148,385

While looking I found this post by Tom, the Tom that is the all-time heavyweight undisputed champion points leader here, and deservedly so, Just substitute Suburban for Tahoe, it's the identical 5.7L engine: "In the Tahoe the distributor does not control timing. It controls the synchronization of the cam sensor and the crank sensor. The only way to set it accurately is with a class 2 scan tool. There will be a PID in data for cam/crank offset. The distributor has to be turned until this reads 0. Any more than 4 degrees off and it will set a P1345 code and run rough." End quote

I thought it was supposed to be set on the compression side

595

the distributor does control timing. if you take it out you got to make sure that no. 1 piston is up and the rotor is pointing to the no. 1 plug wire. what tom is referring to is if you loosing the bolt and turn the dist.

1 out of 1 people think this is helpful.
148,385

OK bandit, makes sense. Thanks for the clarification. My lesson learned

595

look at the marks on the harmonic balancer get the timing marks lined up to tdc. then look at the rotor and no.1 piston. the piston should be up rotor should be pointing to no. 1.

595

No problem Fordnut. I learn something everyday too. I'm also not always right and I don't claim to be.

595

Did you get your truck timed.

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