Mitsubishi 3000GT During it's production run, and after, the 3000GT was a pure sports car offering forced induction and all wheel drive, as well as smooth aerodynamic styling.

Can crankshaft pulley seperation cause timing problem?

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  #1  
Old 09-08-2009 | 06:05 PM
waw618's Avatar
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Default Can crankshaft pulley seperation cause timing problem?

The harmonic balancer, or crank pulley, on my 95 vr4 seperated. I have replaced the pulley put everything back together but its not running quite right. It starts right up and idles smoothly, but has lag in power and tends to die when coming to a stop. Is it possible that when the pulley seperated it threw off the timing? I checked the timing belt and everything lines up on the cams but when they are lined up, the crank is off of tdc. (the timing mark on the pulley is located before the tdc mark on the plate with the cams lined up) If I am have to reposition the timing belt, do I set the cams where they belong and turn the crank to the tdc mark or do I set the crank at tdc and turn the cams? The car has 80k miles and the belt was just replaced at 60k.
Any help would be greatly appreciated!
Thanks.
 
  #2  
Old 09-09-2009 | 01:00 AM
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how far off of tdc on the compression stroke is it?? doesnt sound like a timing problem to me tho cus of it being an interference motor... usually if you slipped out of time the pistons will bend all of your valves. and ruin everything in top half of engine. try checking your crankshaft sensor and your cam sensor
 
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Old 09-09-2009 | 10:25 PM
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When the crank pulley seperates it can cause the timing belt to jump time and cause damage. Check your timing marks and do a compression test.
 
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