So i plugged the C110 code reader in after noticing a bit of a misfire in the Z3 on the way home last night.
it threw up a misfire on 3 and 5 cylinder.
apart from checking the cat, would replacing the spark plugs help?
if its the coils do i need to replace all 6 or only the ones identified by the code reader? and are they plug and play??
2.0 misfire
Re: 2.0 misfire
Have a look at the plugs, do you know when they were replaced? The coil packs are all identical so you could swap them around and see if the fault moved with them. This would show whether the coils were the problem at least. Good luck!
Re: 2.0 misfire
Thanks for the reply.
I'll start with new plugs and see if that helps.
Probably clean the carberator too
I'll start with new plugs and see if that helps.
Probably clean the carberator too
Re: 2.0 misfire
Quote 'Probably clean the carberator too'
You will struggle to clean this as all Zeds are fuel injected and have no carb.
Easiest test is to swop the coil packs over and run for a bit and then connect the code reader again and see what it says. It needs to run for 1/2 hour for the codes to register so have a drive round.
You will struggle to clean this as all Zeds are fuel injected and have no carb.
Easiest test is to swop the coil packs over and run for a bit and then connect the code reader again and see what it says. It needs to run for 1/2 hour for the codes to register so have a drive round.
Brian
3.0I Topaz Blue
2000 E36/7 Z3 3.0i
2016 F31 335d
2015 F21 118i
3.0I Topaz Blue
2000 E36/7 Z3 3.0i
2016 F31 335d
2015 F21 118i
Re: 2.0 misfire
gaah, I meant the ICV, but with carburetor cleaner. which leads me on to another question. should I use carb cleaner??
Changed the plugs, they were manky, still missing a little bit though. Ill plug in the code reader again tomorrow and swap around the coil packs.
Its been a long day
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- Joined: Fri 26 Jul, 2013 09:28
- Posts: 1733
- Location: Manchester
Re: 2.0 misfire
Southernboy found a YouTube video recently of someone swapping the coils over to do a quick check to identify if they were the issue - I'm sure he will be along soon
Re: 2.0 misfire
Often, those codes appear due to a dirty MAF. Take the MAF and air filter out and clean both. use gas or a brake cleaner to clean the MAF. Whenever i used to get random mis-fire codes, it was always a dirtly MAF. I would clean and the codes would disappear.
Re: 2.0 misfire
thanks for the tip!
I'll try this tonight
I'll try this tonight
Re: 2.0 misfire
So I tried cleaning and then installing a new MAF, but to no avail.
New coil pack arrived in the post today, I'll clear the misfire codes and install the new ones tomorrow and hope for the best
New coil pack arrived in the post today, I'll clear the misfire codes and install the new ones tomorrow and hope for the best
Re: 2.0 misfire
My experience of these rather anonymous cylinder misfire codes (P0300-P306) is that they can be ignition coils (although it would be unusual for a car with 6 individual ones to have 2 fail together) or something mechanical like spark plugs, fuel injectors, internal engine problems or a vacuum leak. The latter is very common on older BMWs so I would have a very close inspection of the rubber vacuum pipework particularly the big "bellows" next to the MAF sensor.