car is jumping time after i replaced the head

95GreenTalon · Jan 8, 2014

I changed the head on my 98 gst a month ago drove the car once went to the car wash came home. Everything ran fine from the head to t belt and tensioner is new killed the car the next day went to start it noticed it was off timing. I put it back on time started fine killed the car and it wouldnt start again only thing it does is spend over is there something i did wrong. I been puzzled on what the problem could be someone Help.

talonalex92 · Jan 8, 2014

Did you set the pulley correctly, and with the car in time, does the tensioner have the right amount of space between the top of the tensioner body and arm?

bryanwheat · Jan 8, 2014

You didn't set the tension properly. If it is set properly than it physically can't jump time.

xuberantz · Jan 8, 2014

If the car jumped timing there could be bent valves, I would double check your timing marks and do a compression check. It could be your auto tensioner failing or the initial tension not set correctly. Did you measure the tensioner rod after turning the car over by hand 6 times and waiting 30 minutes for the plunger to stabilize?

Urban_Legend · Jan 8, 2014

you did check that the engine was TDC when you set the timing the second time?

95GreenTalon · Jan 8, 2014

Yea i took the timing belt off the 2nd time turned it by wrench to the timing mark at the bottom im gonna wait til it warms up a lil down here ill be sure to get my boss to bring it to the shop im gonna check everything all over again i was thinking it was my back pulley

bryanwheat · Jan 8, 2014

95GreenTalon said:
Yea i took the timing belt off the 2nd time turned it by wrench to the timing mark at the bottom im gonna wait til it warms up a lil down here ill be sure to get my boss to bring it to the shop im gonna check everything all over again i was thinking it was my back pulley

There is more than just lining up the marks, throwing the belt on and pulling the pin on the tensioner. You have to adjust the tensioner pulley so that there is the correct amount of tension on the belt. If it is done properly than the belt can't skip.

95GreenTalon · Jan 9, 2014

I was under alot of pressure from the baby momma to get it running it couldve slipped my mind now that i ponder on it i was close to just ordering a performace motor and say #### it LOL

but im gonna look it over tom cold or not thanks for the advice guys keep it coming

I didnt thnk i bent any valves bc i turned the cam gear and put them back tdc with the holes facing up if i bent them they wouldnt have turned correct?

bryanwheat · Jan 9, 2014

95GreenTalon said:
I was under alot of pressure from the baby momma to get it running it couldve slipped my mind now that i ponder on it i was close to just ordering a performace motor and say #### it but im gonna look it over tom cold or not thanks for the advice guys keep it coming

I didnt thnk i bent any valves bc i turned the cam gear and put them back tdc with the holes facing up if i bent them they wouldnt have turned correct?

Not correct , they will turn just fine with bent valves. How is the belt so loose that you were able to just turn the gear back into time?

92AWDHX40 · Jan 9, 2014

Timing Belt VFAQ

make sure you follow the steps and install all new parts in doubt.

95GreenTalon · Jan 9, 2014

The belt was off when i turned them

95GreenTalon · Jan 10, 2014

Does anyone have any video footage that may help out

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car is jumping time after i replaced the head

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