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So I only have 88000km on the vehicle and got an mis fire going 45km/h a month ago . I had to pull over and turn off the car and start it up again and everything was fine for a couple of weeks.
keep in mind I have a AMR Stage 1 tune and BMS intakes installed.
just last week the mis fire happen again and I would pull over and turn it off and on and it was fine but it happened again within the same day. I decided to scan it and it was cylinder #6 . I went and got NGK laser spark plus and 1 oem coil to change on cylinder 6.
The spark plugs on bank 1 were clean but on bank 2 they had a lot of carbon built up which cylinder 6 is on. I installed the new plugs and coil but same issue. I still have a misfire but not often . Happens when I’m cruising here and there but not often . When I happens I have to pull over and turn off and on my car to reset it.
any ideas what this could be ? I did a compression test and fuel pressure test with my scanner and everything passed.
i drove for 2 hours today and the misfire happened twice within the 2 hours.
could it be the tune? BMS Intakes ? MAF sensor ? Oxygen sensor ? Idk
I decided to take number 6 spark plug out and again it was full of carbon . I peeked inside the cylinder and it was wet. I decided to clean the spark plug and put my original intakes back on to see if it made a difference. I’ll drive it this week to see if it misfires again .
I didn’t replace the seal pack. I just replaced the fuel injector. Is changing the seal pack necessary??
I guess it's one of those, "only necessary if it leaks" kinda things, lol.
I'm going to be replacing all of mine with rebuilt flow-matched injectors when I do the bored out fuel rail, so I bought new seals and the the install tool.
There's also programming that is supposed to be done when new injectors are installed because there are different flow calcs for different injectors, evidently you got away without doing that as well?
There's also programming that is supposed to be done when new injectors are installed because there are different flow calcs for different injectors, evidently you got away without doing that as well?
I made sure to code the new injector with my Autel ms919. Worked like a charm!
I guess it's one of those, "only necessary if it leaks" kinda things, lol.
I'm going to be replacing all of mine with rebuilt flow-matched injectors when I do the bored out fuel rail, so I bought new seals and the the install tool.
yeah it was super easy to do so if the rail or another injector leaks then I’ll do the seal kit. Goodluck with the rail tho ! Is it hard to change the seals ??
yeah it was super easy to do so if the rail or another injector leaks then I’ll do the seal kit. Goodluck with the rail tho ! Is it hard to change the seals ??
05-12-2024, 04:38 PM
