Replaced timing chain and gears on my 1990 chevy cheyenne v6 cuz dad said 'timing chain is out'. it seemed kinda loose too. The new one is the same way and it still wont start.Can i tighten the chain?
Run a compression test to see if your valve timing is off far enough that it won't run. If all cylinders test low or zero it is. If you have good compression, check your ignition timing, check for spark, and see if it'll run a few seconds if you spray starting fluid down the throttle body. A timing chain is considered sloppy if you can move the crankshaft pully more than 4 degrees before the rotor in the distributor begins to turn. HTH. -Jim
One side of the chain is tight and the other is typically loose. These things can usually go over 200k miles and still be in decent shape
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