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Message: <blockquote data-quote="eeastment" data-source="post: 139987" data-attributes="member: 18959">I have an LS185b and for reasons I won't go into I pulled the motor and yanked the cam (disturbed the timing). I thought I had marked and restored everything correctly. When I started it up it did run ok but produced blue smoke after it warmed up. I finally noticed there was a significant change in sound between cold engine and warm engine. In fact there is a timing advance solenoid that is energized when the engine coolant temperature is below, if I recall correctly, 130 degrees. Once it reaches 130 degrees the advance solenoid drops out (de-energized) and the timing retards on purpose. That's when the blue smoke appeared. I then took manual control of this solenoid and was able to switch it on and off at will. I have video showing every time I energized it (advanced injection timing) the blue smoke went ways like magic. Every time I de-energized it (retarded timing for warm engine operation) the blue smoke re-appeared. This was 100% repeatable.This led me to check the injection pump timing and found, after I had messed with the engine, it was off. Before I pulled the motor it never smoked, was super clean. I checked the timing and found it was not at spec. Re-set the injection pump timing and it has never smoked (cold or warm) again. That was my fix. It's been working fine for 3 years after re-timing it. Still runs great.</blockquote>