[Soul_Glo]

It's like the car is shaking on a windy day when stationary. Only happens at start up and sometimes when idling in traffic/stationary.

Is this engine mounts?

I'm at 102K miles.

Any recommendations on mounts?

Expensive? Easy to DIY?

Thanks

[Aragorn30d]

Mine does something like that sometimes when started from cold in very cold weather. Its a missfire, in my case caused by a duff glow plug. Goes away after a few seconds once the cylinder comes online.

Given yours is a petrol, i presume its a spark or injector issue?

[Terryk]

spark plug or ignition coil and then if not check for injector failure

[abeardo83]

Not sure it is a spark or coil failure. My 335i does it and it's had new coils, spark plugs and a walnut blast. It's probably the engine mounts. Not sure how easy they are to replace though, sorry.

[The0pportunist]

Are spark plug/injector/coilpack issues picked up with carly app?
Thanks

[AWSAWS]

With ethanol in fuel these days the volatility can not be ideal for cold starts. Shaking should disappear once warm if this is the issue.

[DriverLDN]

I had this same issue on my E90 330i about a month ago. I ran the tank down, filled up some Redex in it and then filled it up again. It's been running perfect since.

[AWSAWS]

I've not read great reviews about redex. They seem to suggest it's just red dyed kerosene.
Miles are fairly high op. Might be a good time to look at new plugs and coils.

Coils are £27 each for good Bosch ones and plugs are probably a fiver each for OEM Bosch ones.

[Soul_Glo]

Thanks. I guess I need to hook it up and do some data logging to see if there is actually a misfire. Will have to wait to the weekend.

[AWSAWS]

Originally Posted by Broken_Gearbox

Thanks. I guess I need to hook it up and do some data logging to see if there is actually a misfire. Will have to wait to the weekend.

A misfire usually triggers the Check Engine Light.

I did post a video. If I can find it i'll add it here. This was soon after fitting down pipes and I don't think my car was adapted for them yet. Whatever the issue was it seemed to resolve itself.
Maybe do a lamda reset of adaptations if you can.