Quote:
Originally Posted by msauce18
I have an 05 GTO I bought used. I had a CarFax report run and everything came back clean. I have an engine tick coming from the middle/right side (looking at the engine). You only hear it while idling. I thought maybe it was a valve problem so I took it into the shop. They ran some tests and took a computer graph of the motor. They said to come back in 1500 miles to see if it has gotten worse. I plan on taking it back in this week but so far I think it has gotten a bit worse. They at first thought it was a valve spring sticking but then said it could be the natural motor sound. I also pointed out to them that they car has a rough idle which I thought had something to do with the ticking. Does the car naturally have a mild shake while idling? Does anyone know what the ticking could be?
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The LS1 and LS2 motors are naturally a little on the noisy side and do have a very mild shake to them when at idle. When was the last time the oil was changed ? Seeing that you bought it used you don't know for sure what type of oil is in it. Change the oil and see if it helps with the noise. As far as the rough idle, again some mild shake is normal but you can check a few items if you think the shake is excessive. Check your wires for a tight connection and make sure none of them are rubbing against your exhaust system. You can also make sure your plugs are snug [ not overly tight ] and maybe pull a few of them to check the electrodes.
JOHN
