| my Z has had a hesitation that seems to be getting worse over the last 2 years. i've tried everything i can think of with no results. It's a 90, well it was built in 8/89. Symptoms:
Completely advanced CAS
Hesitation
code 53(Right 02 sensor)
correct timing belt position so i removed the CAS to see if it looked obviously worn but i could not really tell. but the splines on the exhaust cam seemed to look worn but i have not seen any pics of what it was supposed to look like. I decided to remove the back portion of the CAS so i could put it on the camshaft to see if there was any play. by spinning the CAS by shaft it seemed to move a lot before it would catch on the exhaust cam. since it's an early 90 i wonder with these symptoms is it the driver's side head that was machined wrong? any help would be very appreciated.
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