Changed all plugs, coils, wire set, and injectors still a misfire.
Sep 23, 2018 at 5:23 PM
Misfire
2008 CHEVROLET SILVERADO
JOSE559
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Good evening.
Did you check the compression? I would start there first to be sure the engine can produce power.
The other issue could be a lifter or camshaft. The six liter was very well known for a failure of the lifters and camshaft. The valve barely moves and the cylinder will not work correctly.
The way to confirm is to remove the valve covers and run the engine and see if all the valves are moving equally.
Roy
https://www.2carpros.com/articles/how-to-test-engine-compression
Did you check the compression? I would start there first to be sure the engine can produce power.
The other issue could be a lifter or camshaft. The six liter was very well known for a failure of the lifters and camshaft. The valve barely moves and the cylinder will not work correctly.
The way to confirm is to remove the valve covers and run the engine and see if all the valves are moving equally.
Roy
https://www.2carpros.com/articles/how-to-test-engine-compression
Sep 23, 2018 at 5:53 PM
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It is a v8 and the compression came back fine.
Sep 23, 2018 at 6:01 PM
I know it is a V8.
What was the compression?
What about checking the lifters?
Roy
What was the compression?
What about checking the lifters?
Roy
Sep 23, 2018 at 6:03 PM
Yeah, it came back fine and no not yet, but the first to gears kick but after that it runs smooth. Took it to see if anything is wrong with the transmission and it is in perfect shape.
Sep 23, 2018 at 6:13 PM
Transmission does not cause an engine miss.
Still need the compression number to see what the actual reading.
Roy
Still need the compression number to see what the actual reading.
Roy
Sep 23, 2018 at 6:16 PM
125.
Sep 23, 2018 at 6:33 PM
Okay, that is low. If it is the same on all cylinders, then compression is not the issue.
I would pull the valve covers and watch the valves.
Roy
I would pull the valve covers and watch the valves.
Roy
Sep 23, 2018 at 6:34 PM
You think it can be the lifters?
Sep 23, 2018 at 6:51 PM
Maybe or the cam.
That is why it needs to be checked.
That is why it needs to be checked.
Sep 23, 2018 at 6:56 PM