Cylinder 2 Misfire help N62B44 - Page 3

EODguy · #1 07-06-2025, 06:04 AM

I can't believe the Foxwell got nuked, they are tough. Mine has been through hell plus I keep mine in the door side pocket and the temperature here has gotten to 60c.

Keep trying and if it connects run the auto scan and then do a quick clear, rerun it one time more then do live data on any repeats or unclearable items.

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Fatcat · #2 07-06-2025, 07:21 AM

Yeah, I also got surprised paid around $250, and it just stopped working one day. emailed them, they said they can send me a new one, but I gotta send the old one back, and I use my warranty. I did what they said and this one works fine, but im not sure if I wanna plug it back into the X5 because now I don't have a warranty. not even sure if the X5 is the cause.

But yeah, I'll see what happens. I wanna check the live data to see what's going on.

80stech · #3 07-06-2025, 10:00 AM

If the problem is only at idle and you ruled out everything else it's likely that a valve is not opening enough, (especially with that engine asfaik) so that is what you should be looking at, and for something that would cause that, especially now with the engine apart.

80stech · #4 07-06-2025, 08:46 PM

A misfire only under load is usually a spark problem.

Fatcat · #5 07-06-2025, 11:19 PM

Quote:

Originally Posted by 80stech

A misfire only under load is usually a spark problem.

Spark problem meaning no spark, right? If that was the case wouldn't the cylinder 2 exhaust port in the picture be cleaner due to gasoline spraying?

80stech · #6 07-07-2025, 01:03 AM

The DME shuts off fuel pretty quick to a missing cylinder.
I'm not going to reread this thread but you seem to be a bit all over the map about what's going on. Did you do a compression test ? Do you have a scan tool working?

Fatcat · #7 07-07-2025, 01:46 AM

Quote:

Originally Posted by 80stech

The DME shuts off fuel pretty quick to a missing cylinder.
I'm not going to reread this thread but you seem to be a bit all over the map about what's going on. Did you do a compression test ? Do you have a scan tool working?

Compression test came out 120 PSI, scan tool works somewhat, haven't tried to check live data yet.

leak down test is next once the kit comes.

80stech · #8 07-07-2025, 10:31 AM

Not likely that all cylinders were within a few psi of 120. Did you do only 4 compression strokes or 10 or whatever seconds of cranking ??

Fatcat · #9 07-07-2025, 05:35 PM

Quote:

Originally Posted by 80stech

Not likely that all cylinders were within a few psi of 120. Did you do only 4 compression strokes or 10 or whatever seconds of cranking ??

it was around seven months ago, so I don't remember. im going off what I said in the forum earlier.

We did 5 cranks and they all came out fine, no sudden loss of pressure or anything like that.

Regardless, we're still gonna do the leak down test to be more precise because we could've missed something. Until then, I don't have much to say until I get the results, gotta go pick up the compressor from the shop.

Fatcat · #10 07-18-2025, 02:38 AM

well uhh i think we found the problem, we took off the rockers and stuff so the valves stay closed, put some air into the spark plug hole and gasoline in the exhaust port and it started bubbling like crazy.

we have a bent valve, here's the video https://youtube.com/shorts/yhOJENiTfrU

I tried to upload it as a normal video but it became a short ):

so basically the dude who did our timing guides messed up our engine and didn't tell us. so from now on were probably gonna stick to working on our own cars.