Timing Belt help

[SrKegler]

I just finished changing the water pump. Replaced the timing components. Everything was lined up, and stayed lined up after rotating the engine 6 turns.

Left on a trip, went 300 miles with two stops along the way. Car ran perfect. Started the car up to move it and heard an awful rattle under the hood. Parked it. Next morning started it up to do some trouble shooting, had what sounded like lifter tick. Let the car idle up to operating temp, noise quited down some. Shut it off and went into town for some seafoam.

Car now won't start, sounds like the timing is off. Cam gears line up perfect, just can't get the crank sprocket to line up.

What has me puzzled is why it ran so good, then all of a sudden jump time. No damaged teeth that we can see on the belt.

Tomorrow I plan on pulling the front cover off and checking things out.

Anyone else had this problem, any suggestions. I'm now 300 miles from home and need to get it back in service.

 

[ilco187]

does it even attempt to try and start, or just keep cranking like its out of gas, might want to do a compression test just to make sure nothing else is bad and narrow it down to something small.

 

[BogusSVO]

I had a cust. that brought me his head 4 times inside of 2 months, with bent valves....

long story short... when he as setting the time belt, he was setting the belt tentioner in the wrong direction., seems after a couple few hundered miles, the lock down nut would vibrate loose( thats what he told me.. so IDK) so make sure you have the tentioner pulling the proper way...

 

[rlacasse1]

+1 on making sure that you have the tensioner setup properly. Its possible that when it sits and the tensioner bleeds down the belt comes to loose because you may not have the actual tensioner pulley in the correct position. So after it sits awhile and you first crank it then it will jump a few teeth before the tensioner extends. Just one poosibility.

 

[2000]

i am working on a 2000 eclipse with the 4g64 SOHC engine. The timing belt broke and damaged the valves. I had the head repaired at a shop, changed the timing belt (both) went ahaed and changed too. I put back up the hew timing belt and the engine would not run. so i changed the crankposition sensor and it ran. the problem i am having now is that cylinder 1 and 3 will not fire. and the engine is running really rich. i took off the head a gain and had that rechecked i re timed the engine several times, and cheack just about everything that i could thin of. i have new plug wires and spark in all of then. i have fuel on all the injectors, after a million cranks and turn overs my timing marks remain aligned, i have good compresion in all the cyliners, i have double checked everything but cylinder 1 and three wont fire and the engine is running rich...so ....any ideas?

 

[SrKegler]

I had a cust. that brought me his head 4 times inside of 2 months, with bent valves....

long story short... when he as setting the time belt, he was setting the belt tentioner in the wrong direction., seems after a couple few hundered miles, the lock down nut would vibrate loose( thats what he told me.. so IDK) so make sure you have the tentioner pulling the proper way...

I followed the VFAQ link, tightened the tensioner in a clockwise direction, pin holes were to the top belt is still tight, just can't figure out how/why it may have jumped time.

 

[enasnitsi]

The tensioner pulley gets rotated in the counterclockwise direction and the holes should be pointed down not up. If you did it the other way that would be your problem.

 

[SrKegler]

The tensioner pulley gets rotated in the counterclockwise direction and the holes should be pointed down not up. If you did it the other way that would be your problem.

Mine is a 1G. Isn't it the 2G that rotates the pins down. If I swing the pins down, the tensioner will loosen the belt, not put tension on it.

 

[enasnitsi]

Sorry didn't realize you had a 1g.

 

[DSM1G90]

The 6-bolt has those holes up, the 7 bolt is when they're down. 1G's also carried the 7bolt motor which this OP could have in his '92 Laser.

 

[SrKegler]

Well, I think I found out what I did wrong. Misread how tight to make the tension and the only piece I didn't replace was the pivot arm the tensioner pulley bolts too. Mine has quite a divot worn where the push rod from the tensioner makes contact.

Apparently I had the belt too tight even though the gap between the arm and the tensioner body was .18.

Live and learn.