Join Date: Oct 2009
Location: Windham, ME
Feedback Score: 1 reviews
The GM 6.2l and 6.5l diesels used a timing chain and to compensate for chain wear you had to advance injection timing a couple degrees every 50K or so. One of mine wouldn't run well unless it was at 14 BTDC, and obviously that meant injection was taking place closer and closer to a time when the intake valve was still open.
With our gear-driven IPs, the only wear you'll see is internal wear in the pump. Get it rebuilt or replace it when hot starts become difficult and you'll never have to mess with timing just to make it run smoothly, as long as it's properly dynamically timed.
Check my lists of common part numbers in my photos! Updated often!
1991 F350 Lariat XLT, 7.3l, 5-speed, crew cab, SRW, 3.55, 2WD.
1990 Jeep Wrangler Sahara, in the process of a major overhaul/upgrade. OM617 on the horizon! Front & rear Dana 44s from a Wagoneer till I get some 1-ton axles built & narrowed, and eventually a front shackle reversal. Diesel YJ, bay-BEE, and not a cookie-cutter 4BT conversion!