Hello,
I've been struggling with misfiring in my belt for a month now, engine as in the title. The fallout begins immediately after firing, basically only at idle. There is practically no falling out while driving. The engine does not seem to lose power. You can drive it, but when stationary, the fallout is particularly strong, sometimes the check engine will pop up. It doesn't matter if the engine is cold or warm, the symptoms are the same.
Subtle symptoms had already appeared a year ago, but there were no bugs. After firing it, it shook the engine a little and it passed. Now the problem is permanent.
It shows the errors: P0300 P0301 P0302 fixed.
Taken so far:
- candles replaced, the old ones were badly worn, nothing helped.
- coils swapped, errors remained on cylinder 1 and 2.
- the air is checked, it does not pull the left one anywhere.
- throttle being cleaned.
- the timing gear was replaced (in the old chain it was already pulled out)
- Variable valve timing sensor replaced
- Camshaft position sensor replaced
- injector 2 out of 3 swapped, the error still remains on cylinder 1 and 2
- compression checked - 10 on each cylinder
- valves and cylinder leak test done with a tester, all tight
It shows no other errors, no sensor, nothing.
Do you have any suggestions on what it might be?
I've been struggling with misfiring in my belt for a month now, engine as in the title. The fallout begins immediately after firing, basically only at idle. There is practically no falling out while driving. The engine does not seem to lose power. You can drive it, but when stationary, the fallout is particularly strong, sometimes the check engine will pop up. It doesn't matter if the engine is cold or warm, the symptoms are the same.
Subtle symptoms had already appeared a year ago, but there were no bugs. After firing it, it shook the engine a little and it passed. Now the problem is permanent.
It shows the errors: P0300 P0301 P0302 fixed.
Taken so far:
- candles replaced, the old ones were badly worn, nothing helped.
- coils swapped, errors remained on cylinder 1 and 2.
- the air is checked, it does not pull the left one anywhere.
- throttle being cleaned.
- the timing gear was replaced (in the old chain it was already pulled out)
- Variable valve timing sensor replaced
- Camshaft position sensor replaced
- injector 2 out of 3 swapped, the error still remains on cylinder 1 and 2
- compression checked - 10 on each cylinder
- valves and cylinder leak test done with a tester, all tight
It shows no other errors, no sensor, nothing.
Do you have any suggestions on what it might be?
the culprit was the camshaft. Next to the cams, the shaft has sleeves that hold it in the valve cover. One sleeve came loose on the shaft and moved sideways on the shaft. There are oil holes in the valve cover where these bushings sit. The bushing moved during operation and exposed one of these holes, which caused the oil pressure in the engine to drop. It was not dropping enough for a low pressure error in the computer to pop up. The drop, however, was so large that it did not properly lubricate the head, so everything worked out, the pushers, valves, etc. The entire head with accessories for repair.