Curious to know what you find. I have the same misfire at idle that has gotten worse since I owned it. No headgasket change or SC, though on mine.
Random Misfire
- Thread starter Brentbba
- Start date
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- Thread starter
- #42
Anyone want to chime in with the correct size socket to turn the crank pully so I can put those last two point in line to check the G1 and G2 gaps? Anyone?
I'm going to figure this out
. Mysteries intrigue me...and frustrate me at the same time. 
I'm going to figure this out
. Mysteries intrigue me...and frustrate me at the same time. 
Anyone want to chime in with the correct size socket to turn the crank pully so I can put those last two point in line to check the G1 and G2 gaps? Anyone?
I'm going to figure this out
30mm.
- Thread starter
- #45
Yotamaster in Corona has solved the problem it appears. 
HG shop had adjusted the MAF and the truck was running way to lean causing a lean misfire. Yotamaster readjusted it, sealed it back up and a good 10 minutes with the engine at temp idling parked in D and she was running as smooth as she ever has. Another 10 minutes of stop and go test driving and same smooth result. Time is the test, but that seems to have been my issue. Why the HG shop got in there and adjusted it to begin with is beyond me.
HG shop had adjusted the MAF and the truck was running way to lean causing a lean misfire. Yotamaster readjusted it, sealed it back up and a good 10 minutes with the engine at temp idling parked in D and she was running as smooth as she ever has. Another 10 minutes of stop and go test driving and same smooth result. Time is the test, but that seems to have been my issue. Why the HG shop got in there and adjusted it to begin with is beyond me.
- Thread starter
- #48
Original HG place had obvioiusly opend that black cap with the silicone around it shown in the pic and adjusted the thing. Once Yotamaster readjusted it, everything ran fine. Remember, mine is a '94 on OBD I. He was moving something in there and you could tell a noticable difference in the engine when he did. Beyond my
Semlin. Timing was right on the money.
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