how much play should a 4.3 Chevy engine timing chain have?
The ignition timing is computer controlled - not adjustable - but the base timing is 10 degrees BTDC
0 TDC
how do you install new ignition switch on 1989 chevy G10 van?
Remove the retaining ring from the top of your 1989 Chevy Corvette ignition switch. Slide the ignition switch out and remove the wiring harness.
stock base timing is 8 degrees before TDC
One of the primary causes for this is a stretched timing belt. Even though the belt is a notched belt, they do stretch just enough to make the timing not conform to smog specs. I have had this happen, too, and found that a timing belt replacement solved the problem.
If it is a distributorless ignition system, you don't. The timing is all handled by the ecm. It picks up the signal from a crank sensor in the block. It has a reluctor wheel cast in the crank.
On a 1989 Chevy Celebrity the timing is controlled by the engine control module, there is no specification or provision for adjusting the timing manually.
Ignition timing is set on a 1989 Acura Integra by setting the distributor to the appropriate angle. When set at the factory recommended angle the car will turn over with no problems.
On a 2.8l v6 it is at the front of the engine behind the ignition coils.
Which engine does your car have?