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OB mechanics, did I lose an injector? Update Dead #7 cylinder
Posted on 10/5/22 at 4:10 pm
Posted on 10/5/22 at 4:10 pm
Was driving and everything is normal, get to light and truck starts missing bad.
Luckily was next to a mechanic shop so I pulled in. Chances that a sudden miss would be from a spark plug or plug cable?
The plugs and cables did need to be changed.
Mechanic called and there is signs or arching and plug had fuel on it. Keeping fingers crossed it was the plug. This is a 16 GMC with the 5.3
Luckily was next to a mechanic shop so I pulled in. Chances that a sudden miss would be from a spark plug or plug cable?
The plugs and cables did need to be changed.
Mechanic called and there is signs or arching and plug had fuel on it. Keeping fingers crossed it was the plug. This is a 16 GMC with the 5.3
This post was edited on 10/6/22 at 6:24 pm
6
Posted on 10/5/22 at 4:30 pm to GREENHEAD22
Do those motors have coil on plug? That's probably what it is.
Posted on 10/5/22 at 10:07 pm to GREENHEAD22
Hopefully not a chewed up lifter or camshaft lobe, I've changed a shitpile of them both here lately.
Posted on 10/5/22 at 11:18 pm to GREENHEAD22
Ditch that anemic 5.3 turd and get yourself in an ecoboost. If you can’t afford that I guess ask your mechanic what it is or read the ODB2 code and report back to us. Based on what you told us it can be all kinds of different things. Not enough info.
Posted on 10/6/22 at 9:43 am to GREENHEAD22
Had a similar issue a few years ago on a different engine. Changed plugs and wires and still same symptom. Turned out to be a bad ECU.
Posted on 10/6/22 at 2:33 pm to GREENHEAD22
Do you know what codes it had? 9/10 times with those symptoms it's a bad ignition coil.
Posted on 10/7/22 at 6:50 am to GREENHEAD22
Could you pressurize the cylinder with an air compressor and listen for air at the tailpipe or intake? It'd tell you if it's a valve and what side.
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