Question about 1991 Honda Accord

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Timing belt continued

Thank you for this solution. To clarify the problem, my boy had a compression test at a shop. Do you know what the difference would be if the belt was the problem on good or bad compression? I was out of town and my boy is not clear how to describe the process; I will call but I wonder to be warmed up what the compression test should show.

Thanks for your help!

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It depends... I know that for sure, the serpentine belt that drives your accesories would not cause any signifigant differences in your compression upon testing. I'm pretty sure you are referring to the timing belt... and i'm assuming that the motor in the car is the 2.2l l4. If you have any documentation on the compression test, normal compression readings would be about 9.5.1 and that would be at 16 degrees TDC. (that's where your timing marks should be on the cam gears.) If you are getting low compression (lets say 3.5.1) on your read-out, then that means that your timing is definately off. This would not nessecarily mean that the car would not start. It would try to run, catch, or run a bit and hesitate... then die on you. Basically, that just means that you need to have the timing adjusted. If you wanted to self check and make sure that the belt is in ok condition, remove the spark plug wires, and unbolt the valve cover. Remove it and examine the belt for frays or damages.

If the belt was bad or not functional at all, your compression readings would be really high (given that your piston rings are in good shape, and your valves were seating correctly and not damaged) But yes, there would be a signifigant difference, and it would be safe to say that in the instance of really high compression that a malfunctioning or broken timing belt would be the culprit.

Did your son drive it to the shop to have it tested? or was this after the no start problem?

Posted on Dec 24, 2008


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