I’ve had this happen in the past but can’t remember what it was? Just replaced the oil pan gasket and front seal. Thanks, Mike
Idles fine in park stumbles in gear and lower rpm’s
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what truck? To my diesel-driving ears it sounds like fuel delivery. Cracked lines, bad hand-pump seal on your lift pump, badly seated return line off the injector rail etc...
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Fj 62 3fe Thanks