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is it a z34 3.4l, if so sell the car, it is not worth the price to repair, that is an interferance motor meaning if it broke you have bent valves, if it is a 3.1l pull the balancer and then the front cover and replace the chain
It's just not likely in an 11 year old car. Timing chains seldom get so worn and stretched that they could jump timing. How to know? Car will run very poorly, if at all. To be certain, pull the timing chain cover off and check the timing marks. Whatever problems you are having, have the engine computer scanned for trouble codes as the first step in diagnosis. Good luck.
I dont belive this 1986 monte carlo has a timing belt, this car uses the timing chain, the timing chain is good for 150,000 miles, the to check it for wear would be to remove the distributor cap turn crank with a wrench to right mark rotor then slowly turn crank to the left and watch how far the crank turns before the rotor moves, this is how to check the slack on the chain if the crank moves more than 10 degrees then replace the chain, these cars can go 150.000 miles before the chain is needed, and some go more. hope this helps.
3.4l double overhead cam ? i'm told the 95 is the only 1 with non-interference valves when the timimg belts go out . once you have the crank on #1 top dead center and your positive, there should be a notch in the top of the flywheel . and the cams on the firewall side will have flat spots facing down while the front side will have both cam flatspots facing up .anyways that's a rough idea what you need to get it to do.
If the car is a 95 it should be a freewheel non interference. if it's a late 95 or 96 then it is an interference. You will need to replace guide pullys and the tensoner. I will worn you it's a real pain to do. no room for your hands
I have changed my timing belt and chain.The belt you have to pull the valve covers off and on the front and the back of each side there is spot that a special tool or flat plate with a hole in the middle makes sure the lobes stay where they are suppose to be