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Misfire can’t find the issue.
Well we rebuild the top end, new cam, new lifters complete DoD delete all new gaskets all the way around got everything put back together. Everything was perfect no misfires no rough idle. After a week of driving P0335 Crankshaft position (CKP) sensor circuit code came back, tach stopped...- dshaff45
- Post #21
- Forum: Engine & Drivetrain
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Misfire can’t find the issue.
Rocker armThe loose rocker arm has lots of lateral play in the bearing. The attached link is very similar to mine.- dshaff45
- Post #18
- Forum: Engine & Drivetrain
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Misfire can’t find the issue.
So after today, swapped in ANOTHER crank sensor did not fix the issue even after the re-learn but then proceeded to hear more of a tap at the WOT portion of the relearn. Pulled the valve cover off still nothing specifically on bank 2 cylinder 4. Found a loose bearing on a rocker arm, not...- dshaff45
- Post #14
- Forum: Engine & Drivetrain
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Misfire can’t find the issue.
Thank you for the video, we shot the wires wiggling as we went along and no dice. However, when we CKP code came back. P0335. No tach again. Before that fuel pressure balance test was perfect. Noid light confirmed injectors firing as well.- dshaff45
- Post #10
- Forum: Engine & Drivetrain
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Misfire can’t find the issue.
Thank you for welcoming me to the forum! Glad to be here, however wish It was under different circumstances! So as stated on my most recent reply it did check all grounds replaced ones that were of concern and cleaned the ones that weren’t. Noid lights verified everything that I checked were...- dshaff45
- Post #9
- Forum: Engine & Drivetrain
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Misfire can’t find the issue.
240k miles, but the top end was rebuild previously as well. Heading to the part store to get fuel pressure tester and noid lights as well. It’s been quite the project I guess I didn’t post everything we’ve done. But grounds have also been replaced. Will keep you posted when I get back with the...- dshaff45
- Post #5
- Forum: Engine & Drivetrain
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Misfire can’t find the issue.
I have a 2012 GMC Yukon SLE with 5.3L. My problems started with a P0300, and since the vehicle has high miles, I ordered new coils, plugs, and wires. My #4 spark plug was wet, and the rest looked fine. I changed the plugs and wires at this time. Two days later, I got an MAF code, which I...- dshaff45
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- Replies: 23
- Forum: Engine & Drivetrain
