2.3L ('02-'11) Good compression, misfires and oil consumption

[pjtoledo]

Figured out the p0301 and p0316... It was the coil, even though i put a new one on last year... NGK brand... Found a Denso one off another Ranger... So that problem is fixed.
Now on to the
-Intermittent coolant smell
-The oil consumption (which may be a blockage not allowing the oil to drain back down?, therefore resulting in a false reading in the stick)
- and the pinging/rattling at half throttle (which may be related to the oil problem)
I'm going to use Marvel mystery oil and see what happens.

there are large oil drain back holes in the head that align with channels in the block. that would be quite the blockage.

 

[rubydist]

OK, now that you have the misfire problem solved, did you reset the pcm when you changed the coil? Disconnect the battery cable for at least 10 minutes and then reconnect. I think that the ping you were experiencing was lean condition caused by the oxy sensors setting the fuel trims very lean due to the oxy sensors reading the unburned fuel from the bad coil. Resetting the pcm will set the fuel trims back to "normal" and it will re-learn things faster. Unfortunately that was likely not related to your oil burning issue.

mja, how much oil is the engine using? How many miles before you have to add a quart?

 

[mja_ranger04]

OK, now that you have the misfire problem solved, did you reset the pcm when you changed the coil? Disconnect the battery cable for at least 10 minutes and then reconnect. I think that the ping you were experiencing was lean condition caused by the oxy sensors setting the fuel trims very lean due to the oxy sensors reading the unburned fuel from the bad coil. Resetting the pcm will set the fuel trims back to "normal" and it will re-learn things faster. Unfortunately that was likely not related to your oil burning issue.

mja, how much oil is the engine using? How many miles before you have to add a quart?

I did clear the code with my scan tool. Is that enough to reset the fuel trims? The pinging was happening before the coil crapped out and p0300 codes.. And its still doing it. So this seems to be a fuel related problem?
I probably drive 500 miles and have to add a quart of oil. I'm not really certain. The really weird thing is, i had the oil changed less than 1000 miles ago and the level was above the max but not too full. Then i went on a 150 mile drive and back and the level is barely at minimum. Am I not waiting long enough for the oil to settle before I check the level?
I chnaged the pcv valve the other day and when I removed the tube connected, some oil dripped out, is that normal? Also noticed oily carbon residue on throttle body flap, and there is probably more further in.

Thank you

 

[rubydist]

No, clearing the codes does not reset fuel trims or any other "learned" settings. The easiest way to reset is to disconnect power for a while.

Checking the oil is only valid after it has sat for at least an hour, I always check in the morning so I know that whatever is going to drip back down to the pan has done so. A quart of oil used in 500 miles is not that much when you consider that converts to a couple of drops per firing stroke, so it can easily burn that much without causing smoke out the tailpipe. There are a number of possible causes but worn rings would be a top candidate - in which case a teardown and re-ring at a minimum would be required.

 

[mja_ranger04]

No, clearing the codes does not reset fuel trims or any other "learned" settings. The easiest way to reset is to disconnect power for a while.

Checking the oil is only valid after it has sat for at least an hour, I always check in the morning so I know that whatever is going to drip back down to the pan has done so. A quart of oil used in 500 miles is not that much when you consider that converts to a couple of drops per firing stroke, so it can easily burn that much without causing smoke out the tailpipe. There are a number of possible causes but worn rings would be a top candidate - in which case a teardown and re-ring at a minimum would be required.

Ok, i will disconnect the battery. But i think this pinging was happening thousands of miles ago. Before any of these trouble codes came on.
The thing is, someone drove my truck from Denver to Oregon and I have no idea if this was happening during that trip. That may have messed up my engine. The compression is strong on the engine, all at 180, and that was a warm test all plugs removed.

 

[mja_ranger04]

Bump