![]() ![]() If you see black smoke with heavy combustion noise, you are 4 or more deg too advanced. ![]() If you don't see white/blue smoke on acceleration your within 3 to 4 degrees retarded (white smoke = more than 4 retarded) low power, poor milage and prolonged starter engagement. Turn the injection pump 1/16" to the passenger side (measured at the pump to housing flange) That's about 4 deg. The marks on the pump to housing are only accurate if it is the original pump from the factory. The following info was posted as a guide for retarded timing, remember do not move the injector pump engine running and always tighten the IP before starting. If it starts and runs really quiet I would suggest your timing is retarded slightly. ![]()
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