95 GMC Jimmy Timing Questions
I have a 1995 Jimmy that has an obd1.5 system. Obd1 with an obd2 port. I am getting a p1345 code so my timing is not correct of what I assume. When checking the timing at around 800 rpm on an autoxray 7000 it shows it at -23 to -25 degrees. Is there a way to properly adjust the timing with the scan tool. I guess I am an off a tooth or 2 on the distributor. With a scan tool can I move and recheck the timing? What should it read? 0 degrees? Do I have to rev the engine beyond a certian rpm to check? Perhaps checking the timing the traditional way would be better? Does this distributor lock in place or can I advance it by turning it some. I keep reading that some lock into position and some can be moved. Have not actually looked at what I have, just trying to get a good idea till I go out and start messing with it. The truck runs ok, has a bit of a hard time starting and recently failed emission due to HC. Any instructions would be great!
Thank you for your time,
Last edited by Jessie00721; 03-28-2011 at 07:56 PM.