I think my timing chain has slipped. It was tuned up yesterday, and the motor
mounts were replaced. Any time I put a hard load on it, it'll spit, fart,
pop, or buck. If I'm easy on the gas, it won't hiccup, but it takes awhile
to get moving.The distributor shaft(original) had almost no play. The engine
has 619,000 km on it, and has been maintained to perfection. Does anyone
have any suggestions?
I likely would have done rebuild/replace at the 500,000km mark regardless of
condition, so at 619,000 you should seriously consider it if you can't find
any ignition/fuel delivery problems.
You may be surprized to find out you are just running lean, maybe fuel
delivery, injector(s), etc. You can check how sloppy the chain is by
watching the rotor, turn the crankshaft clockwise till it starts turning,
then mark the crank and turn it counter clockwise till the rotor starts
turning. See how far it is between start point and where rotor turns when
turning clockwise. If it is off 20 degrees the timing will be off half that
amount due to chain stretch or 10 degrees. Five degrees of the cam being off
would be quite a bit, retarding the cam which loses power, especially at the
low end of rpm range. Advancing the cam gives you more torque.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.