Have code faults for #1 misfire, fuel injector 1 circuit open, and Bank #1 lean. There is a slight rough idle, but no misfire perceived, and it runs fine under load and high speed. Doesn't burn oil. Gets 15mpg combined mileage. Ran fine when I got it 64,000 miles. Now it has 110,000 miles. It has had this issue for about 10,000 miles. Not getting worse, but so far plugs and coils and cleaning intake hasn't corrected it. I checked and cleaned Injector and Coils wiring connections and they look good too. #1 Injector plug had some oil in it, somehow. Cleaned it very well with first brake cleaner, then electronics cleaner. Let it dry and reassembled. Can bad Injector o-ring cause this? I already ruled out spark plug, coils, valves, and did intake cleaning. I have not checked orings and the wiring from #1 Injector to the computer control. And don't really know how to. Any tips on checking Injector and its wiring and control while it's still in the head? Thanks!
Maybe the wire is broken in the insulation. You could grab a cheap light bulb from the auto parts store, bend out the legs. Then shove them in the connector and fire it up. If you see the light pulsing, the wires up to the connector are good. I use a fuel gauge and a scan tool. Just run the injector test, and watch the pressure drop when each injector is actuated.
Manny, you are AWESOME!
After replacing all my ignition components I still had a random misfire, you nailed it!
It was the O2 sensor. Thank you!!!
You welcome boss🙏🏼, suscribe to my channel please
Have code faults for #1 misfire, fuel injector 1 circuit open, and Bank #1 lean.
There is a slight rough idle, but no misfire perceived, and it runs fine under load and high speed. Doesn't burn oil. Gets 15mpg combined mileage. Ran fine when I got it 64,000 miles. Now it has 110,000 miles. It has had this issue for about 10,000 miles. Not getting worse, but so far plugs and coils and cleaning intake hasn't corrected it.
I checked and cleaned Injector and Coils wiring connections and they look good too. #1 Injector plug had some oil in it, somehow. Cleaned it very well with first brake cleaner, then electronics cleaner. Let it dry and reassembled.
Can bad Injector o-ring cause this? I already ruled out spark plug, coils, valves, and did intake cleaning.
I have not checked orings and the wiring from #1 Injector to the computer control. And don't really know how to.
Any tips on checking Injector and its wiring and control while it's still in the head? Thanks!
Maybe the wire is broken in the insulation. You could grab a cheap light bulb from the auto parts store, bend out the legs. Then shove them in the connector and fire it up. If you see the light pulsing, the wires up to the connector are good.
I use a fuel gauge and a scan tool. Just run the injector test, and watch the pressure drop when each injector is actuated.
My respect for helping your son
Thanks, 🙏🏼
O2 Sensors could be the gas cap isn’t screwed on tight.
You know absolutely nothing about vehicles bud.
@@HazeyDayzz420 I sold cars for 20yrs. You might want to double check that..
Firing order pointed out is backwards
Did the engine make a loud ticking noise when it was missfireing ?
Yes my engine do it, what can it be?
Thankssss man it helps !!
Thanks please suscribe to my channel 🙏🏼
Thang I’ll try tomorrow my car is doing the same
Thank you so much Manny.
Up stream 02 sensor.
Thanks
I try now
The name please 🥺
02 sensor