Geo Tracker/Chevy Tracker timing problems

What is "great compression"? I don't know if this is an interference engine, but if it is, you'd need to look at the valves. That said, if the compression reads to spec on each cylinder, I would not be suspicious of valve damage.

You did get number one cylinder up to TDC when you aligned the camshaft timing marks, right? Can you take a picture and post a link to it, of the marks you mention on the camshaft? I have never worked on this particular engine, but I'm having a hard time imagining "a few" timing marks on a cam. What are you trying to line the mark(s) on the camshaft up with?

Sorry if I'm asking questions that may be below your skill level, but it's hard to tell from your post if you've ever done this kind of work before and if you're familiar with timing a cam.

Gates does not list the 8 valve as an interference engine so he was lucky.

The compression was well within spec. I did put #1 on tdc to set the cam and check the distributor. I have done many timing jobs (belts and chains) to realize this one is a pain in the arse. I will get some pics up tonight. Thanks,

Rock

Mike Marlow wrote:

No.

My information shows only one timing mark on the cam sprocket which should be lined up with the notch in the rear of the timing belt cover at 12 o'clock. Crankshaft mark is set at 12 o'clock also.

When you took the crank pulley off, did you remove the 1 main bolt in the center or the 5 bolts around it? I've seen the crankshaft key sheared on these things so it may be worth checking also.

I removed the one bolt for the harmonic balancer. I will have to look at the crankshaft key. thanks for the input.

Rock

aarcuda69062 wrote: