fireguy12117
Well-Known Member
I think i have bad timming on my 4.0. i got a rebuilt long block back in january, and have since installed and ran the motor. ive been having detonation issues that i cannot seem to pinpoint to the usual suspects.
I've borrowed a timming light and took a look. i saw the pin that sticks out of the pickup sensor and could barely see some marks on the inside of the pulley- couldnt make anything legible out. it looked to me like there was two markings about half an inch apart and both were well before the pin, the pin was not pointing between these two marks. they were probably a good half inch before the pin, like the pin is at 10oclock, the parks were at 7oclock.
Am i looking at the right thing, and what does this tell me?
I've borrowed a timming light and took a look. i saw the pin that sticks out of the pickup sensor and could barely see some marks on the inside of the pulley- couldnt make anything legible out. it looked to me like there was two markings about half an inch apart and both were well before the pin, the pin was not pointing between these two marks. they were probably a good half inch before the pin, like the pin is at 10oclock, the parks were at 7oclock.
Am i looking at the right thing, and what does this tell me?
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