Diesel JD
Full Access Member
You have to have a good ear for timing, honed by at least being around some well running IDI trucks, but preferably years of working on them, even at that you can be a degree or so off. Better is to snag an old snap on MT254or 257 or a new Ferret pulse adapter coupled with an adjustable strobe timing light. In SE Alabama you're probably not too far from Pensacola Diesel.