Timing Question?

Question

How do you set the timing on a 1990 chevy corsica 3.1L v6? or how do you set timing in general?

Answer 1

Dear Corsica-

Engine timing on the new computer controlled cars is no longer adjustable.

If you have at the engine apart for repairs, then the only thing you can do at this point is make sure the firing order is correct when you re-install the spark plug wires by insuring they are on the correct cylinder.

During assembly, you should have made sure all of the timing marks on the crankshaft and camshaft were properly aligned, then set the engine to Top Dead Center #1 compression stroke, then fire the engine.

If it does not start, then your set-up was incorrect, or you have another problem with ignition or fuel.

All engines require fuel, spark and compression to operate.

Good Luck

Answer 2

The Corsica's 3.1 had a distributer thru '93, but timing is controlled by the computer. Timing lights usually have two wires, one goes to the battery and the other to the number one spark plug. Losen the distributer (mark first so you can put back if something goes wrong). With the engine running, aim the timing light at the top of the crankshaft pully and find the timing marks. Turn the distributer to the desired degree of timing and re-tighten. This is a general overview, it would be covered better in a repair manual or timing light instruction booklet. It's not hard to do, time one and you've timed 'em all...

Answer 3

The 3.1L is non adjustable. It's set by the computer. If your timing is off then it's possibly a computer or mechanical problem.

Answer 4

if you do not own a timing light tool then you need a tune-up shop to help you with this job ....the timing mark is on the harmonic balancer and it mostly complicated to get it set right as this has everything to do with the engine not over heating firing in order and the valves open/close in time and order of fire.............. get some help and watch what is done and next time you will know the procedure ---- and if you don't like what I am saying then a trip to the local auto parts store and a coonversation with the parts "dude" will be school for you ---- I suggest that what the parts guy tells you be made to look like he is "the boss of info" and you listen carefully -- he may be able to direct you to a reliable and $ reasonable auto tech ...

Answer 5

Few modern cars have user-settable timing. It's adjusted as needed by the engine computer based on speed, octane rating of fuel, temperature, and a bunch of other things I can't think of right now.

Answer 6

The timing never changes. Once it is set, it's good.