Changed the plugs, see attached pic, and cleaned the MAF sensor and still idling rough. Didn't drive it around and didn't get a CEL, so I assume the misfires are still in the same places. I'm going to have it towed to my buddy's shop and let him try to diagnose it on Monday. Worth noting though the rubber wrapped around the plug that came out of the #4 cylinder. Could this point to a bad plug wire?
Misfire help!
- Thread starter ASUMTNEER
- Start date
LittleCaesar
New member
Do you remember which plugs came out of cylinders 2 and 4? The one farthest to the left really looks fouled.
The one on the far left did come out if 2. The one with the black rubber wrapped around it came out of 4.
Update:
Quick update. I had some time today, so I ran over to the shop and tried my luck. I cranked it up and it idled fine for about 20 seconds, then started missing but no CEL. I decided to swap the plug wires out for new NGK's since they were only $35 from Amazon. I had purchased some cheap Coil Packs that got good reviews, but decided to change one bit at a time in hopes of properly id'ing the issue. Swapped out the plug wires, fired her up, and all is good. I drove it around about 4 miles or so and got the engine up to temp. It drove perfectly normal and showed no signs of missing. I had to head back to work, but I'll swing by this evening and drive her home. If all is good, she'll be my DD again. I'll likely hang on to the coil's, just in case. I'll post back periodically just to check in. Thanks to all of you who helped me.
Quick update. I had some time today, so I ran over to the shop and tried my luck. I cranked it up and it idled fine for about 20 seconds, then started missing but no CEL. I decided to swap the plug wires out for new NGK's since they were only $35 from Amazon. I had purchased some cheap Coil Packs that got good reviews, but decided to change one bit at a time in hopes of properly id'ing the issue. Swapped out the plug wires, fired her up, and all is good. I drove it around about 4 miles or so and got the engine up to temp. It drove perfectly normal and showed no signs of missing. I had to head back to work, but I'll swing by this evening and drive her home. If all is good, she'll be my DD again. I'll likely hang on to the coil's, just in case. I'll post back periodically just to check in. Thanks to all of you who helped me.
LittleCaesar
New member
Good to hear. You have to like those cheap but effective fixes. You did replace the plugs as well?
Yes, replaced those with NGK's as well.
mtbtim
Elite Member
I still think it's weird 2 wires went bad at the same time but it appears maybe that was the case.
LittleCaesar
New member
Given the possibility that they are original, who knows. Or more likely that AZ misread the code. That I can vouch happens more often than not. But as long as the OP is riding well now, so it goes. :bounce:
mtbtim
Elite Member
That's great to hear. I still think you should go out and play the lottery because the odds of two wires failing at the exact same time seems pretty unlikely. I've seen many of these misfire scenarios on the forum and everyone starts off by replacing plugs and wires because it's the easiest and most affordable thing to try but a decent percentage find their problems lies elsewhere. Glad to see the "Easy" fix worked.
I am wondering though if [MENTION=69868]LittleCaesar[/MENTION] is sort of correct and you were really only experiencing a single misfire. I'm guessing the Autozone guy knows how to read but I'm wondering if the ECU reported a double misfire when it really was isolated to a single cylinder. Anyway, enough conjecture. Your problem is fixed and that's great to hear.
I was also wondering about the single misfire theory but didn't know if a single misfire would cause it to run as poorly as it did with the flashing CEL. Guess we'll never know...off to buy a lotto ticket now
