51 replies to this topic

[alkvalseth]

Great, will read that!

[alkvalseth]

Hey guys! I need your help! Today I changed the downpipe (?) to one without a cat. Right after, I tried the car to listen to the sound, and about five seconds after I went off the gas, I heard a quite loud bang. Then, I ran on 3 cylinders. I don't know if the bang had anything to do with the loss of one cylinder or not. First I thought it was unburned fuel that ignited, and maybe it was, but anyway, now I have an issue. Any ideas what might be wrong?

Thanks

Andreas

[pete-r]

Have you removed the lambda sensor? If so have you turned it off in the ecu (assuming dutch software)? Not sure why it would drop a cylinder either way, Any error codes?

[alkvalseth]

I have both lambda sensors in place, but I haven't turned it off in the ECU yet. (Have got dutch). But I didn't get any error codes, and as you say, as far as I can see it shouldn't drop a cylinder..

[CHILL Gone DUTCH]

Wonder if you did some damage when the coolant ran low ? Might me time for a compression test and have valves etc checked Good luck

[Bargi]

Maybe you've bumped something while changing the pipe. Check your spark plugs, reseat coil pack and check wires and plugs around the engine bay.

[alkvalseth]

Thanks for the advices guys, I think it might be the coil pack, but not sure. I have driven for quite some time since I had low coolant levels, but I going to do a compression test. Thanks for the tips!

[fezzasus]

Unlikely to be the coil pack. It's wasted spark so one coil for two cylinders, you'd be running on two if it's a coil has failed.

 

Last conversion I did, the injector plugs weren't sitting properly and some material needed cutting away. I suggest you start there.

[alkvalseth]

Actually I forgot to say that it doesn't necessarily sound like it's running on three cylinders, it might as well be two. I saw that there was two coils in the coil pack: would misfunction of one of these cause an unbalanced engine?

[alkvalseth]

I have found the problem! My coil pack is broken! So should be an easy fix. But I only have access to a coil pack for a Z22YH. Is this going to work on a Z22SE? Would appreciate a quick answer, as I need to order now

Thanks

[The Batman]

Nope won't work

[alkvalseth]

Thanks for the quick answer mate!