I just bought a 93 Si lude a few months ago. I checked the exhaust at the time that I purchased it and there was absolutely no smoke at all whatsoever. The car has about 160K on it. Well, just in a couple months time, the car began smoking out the exhaust. There is a big puff of blue-ish smoke when I start the car, and it smokes very slightly when at idle, but when I am driving and I rev it up and shift gears, there's always a big cloud of smoke behind me. I wouldn't think that the rings would have gone bad just in a couple of months, so I am figuring it is something else. Is it possible that there is something else wrong here that I could fix other than putting new rings in the pistons?

 

With 160,000 your rings can pretty much go at any time. Just cause its been a few months doesnt mean that something like that cant go wrong. Do a compresion test and compare your findings to factory specs.

 

where can I find the compression numbers for the h23? How much compression should I have on each cylinder?

 

Get a helm manual. Its well worth the money.