Matthew Jeschke
Full Access Member
Okay, so I replaced my bad knock sensor, and while I was at it I decided to clean the fuel injectors. I may have opened a bag of worms. I followed this procedure:
Basically opened fuel injector w/ DC power supply and blew carb cleaner through them both ways.
I then cleaned the valley cover and cylinder heads really well. Lastly I wet shop rags with Berryman Fuel System cleaner and wiped down each intake port on the cylinder heads. Nothin too major.
The intake manifold had been VERY expensively cleaned. I dried it out very carefully making sure no water was in it anymore (or so I think).
I put the truck back together. Cranked it w/o fuel. Didn't seem to be any problem. So I put back in the relay for the fuel pump. I primed the system a handful of times by cycling the key but not spinning the starter. Then I went to start the truck..
Massive popping noise. It was bad so I shut it down immediately. I thought about what happened. I wondered if some solvent got into the cylinders. I took back out the fuel pump relay and went to start it up again. Wow, massive popping even worse this time. I don't think I heard anything like engine blowing up noise or metal on metal but it wasn't good. I immediately shut down the motor.
Overall I MAYBE ran the motor for 3 seconds under power where it was popping if even that. It scared the hell out of me.
I pulled all the spark plugs wondering if something got dropped in a cylinder (although I was VERY careful about that. I taped all the cylinders shut (see picture) while I was working.
When I pulled two of the driver side spark plugs it sounded like fluid came out of them. I wonder if I have a stuck open fuel injector that flooded the cylinder with excess fuel while I was priming the system?
I hope I didn't damage anything inside the motor. I turned the crank with a breaker bar several times in each direction. It seemed to stick at various points in the beginning but was inconsistent as to what point it hung up in the motor...
I kept turning it (probably dump thing to do) and it got better.... Maybe I had left a shop towel in one of the intake ports? I really don't think I did as I was SUPER careful about that too.
Bit rattled, any words are appreciated.
Note picture says coolent, but it was gas. Two of the spark plugs were wet. I checked the oil and doesn't seem to be any other fluids in it, at least on the dip stick.
I left my garage with all the doors open and a big fan running. It smells horribly of gas.
Basically opened fuel injector w/ DC power supply and blew carb cleaner through them both ways.
I then cleaned the valley cover and cylinder heads really well. Lastly I wet shop rags with Berryman Fuel System cleaner and wiped down each intake port on the cylinder heads. Nothin too major.
The intake manifold had been VERY expensively cleaned. I dried it out very carefully making sure no water was in it anymore (or so I think).
I put the truck back together. Cranked it w/o fuel. Didn't seem to be any problem. So I put back in the relay for the fuel pump. I primed the system a handful of times by cycling the key but not spinning the starter. Then I went to start the truck..
Massive popping noise. It was bad so I shut it down immediately. I thought about what happened. I wondered if some solvent got into the cylinders. I took back out the fuel pump relay and went to start it up again. Wow, massive popping even worse this time. I don't think I heard anything like engine blowing up noise or metal on metal but it wasn't good. I immediately shut down the motor.
Overall I MAYBE ran the motor for 3 seconds under power where it was popping if even that. It scared the hell out of me.
I pulled all the spark plugs wondering if something got dropped in a cylinder (although I was VERY careful about that. I taped all the cylinders shut (see picture) while I was working.
When I pulled two of the driver side spark plugs it sounded like fluid came out of them. I wonder if I have a stuck open fuel injector that flooded the cylinder with excess fuel while I was priming the system?
I hope I didn't damage anything inside the motor. I turned the crank with a breaker bar several times in each direction. It seemed to stick at various points in the beginning but was inconsistent as to what point it hung up in the motor...
I kept turning it (probably dump thing to do) and it got better.... Maybe I had left a shop towel in one of the intake ports? I really don't think I did as I was SUPER careful about that too.
Bit rattled, any words are appreciated.
Note picture says coolent, but it was gas. Two of the spark plugs were wet. I checked the oil and doesn't seem to be any other fluids in it, at least on the dip stick.
I left my garage with all the doors open and a big fan running. It smells horribly of gas.
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but code is still there. not sure if it takes a little while to go away.
