Diesel JD
Full Access Member
The Haynes book says 195-440, but in truth those cylinders need to be in the 300+ neighborhood and the lowest within 25% of the highest. The hardest part is taking all the glow plugs out and finding a gauge and adapter to make it work. Crank it over 6 compression strokes at least and all cylinders the same # of strokes. I tend to concur with Midnight Rider about what kills turbo IDIs, the normal boost seen here won't hurt it unless something was already on the way out anyhow like head gaskets or valves. He's also right about 1250 all day in the manifold pre turbo but most people have the egt probe mounted further downstream, and the 1250 assumes everything is working perfectly, personally I'm in favor of a bit of a fudge factor. About the injector problem, Drew is right that can do it...is it timing or injector related, it could be either, did you say you replaced them? If not they need to be taken out and pop tested, timing should be done with tools. It can be done by ear with a trained ear. Its also possible the lifters are the culprit, less likely but still possible.