How do I advance the Timing?

[scot5146]

Hey guys-

Its been years since I messed with the timing on one of these diesels, last time it was a 6.2 diesel but I need to advance the timing on my current 99 k2500 Suburban...

Can someone give me instructions on how to do this for the 99 K2500 6.5 TD?


Thanks

Mike


Vancouver/WA

[JohnC]

You can't change the injection timing by adjustment. That is controlled by the PCM. You can change the internal pump timing, called TDC offset. You need a scanner to do it right. In a nutshell, the scanner commands the PCM to "learn" the current value, then you adjust the pump position, then relearn the position. Consensus seems to be that somewhere around -1.95 is optimal.

[scot5146]

Gotcha-

So on the newer pumps it sounds easier to have a shop do it... That was the nice thing on the old 6.2, as i remember I think I just knocked loos the bolts and turned the pump...

Thanks for the help, I will get a hold of a good diesel shop and have them do it...

Thanks

Mike