[MT-2500]

Originally Posted by Carito

Thanks for the reply. No actually I havent checked the engine timing. I figured and I guess I shouldnt have that if it sounded good and wasnt pinging or knocking that the timing was ok.
As for spark plugs I have Bosch Platinums in it. Not the Platinum 4s just the standad ones. I used to have the fours but they never made a noticeable difference so when I did the basic tune up I changed them out. The Engine is running at the right temp and has a new recommended thermostat in it. The check engine light has only come on once and it was coded for the MAP sensor about three years ago, which was replaced.

As for the engine running. Its never really given me a prblem. I used to get around 350 miles to a tank and the only thing that the engine has ever done and has so the entire 5 years Ive had it is have a lobe type idle. When at a stop it just kind of vibrates a little and you can see it in the steering wheel and antenna. If you give it a little bit of gas it goes away. It has lawys done this though even when the gas mileage was a lot better so I never figured it to be a culprit.

A good place to start is to drop the bosch plugs in the trash can and install the AC-delco spark the book calls for. Then check and set the base timing.
Also a good scanner check on the computer may show something.
Good luck
MT