M42club.com - Home of the BMW E30/E36 318i/iS

DISCUSSION => General Topics => Topic started by: bimmere30 on June 24, 2014, 09:40:28 PM

Title: e30 running rich
Post by: bimmere30 on June 24, 2014, 09:40:28 PM

what should i do? adjust the afm? btw i have a rough idle ... and so far i installed new spark plugs air filter and fuel filter already, and wires are only 30,000kms broken into.

My idle is like the same as this guy: Should I adjust the AFM?
https://www.youtube.com/watch?v=MTnB5X4lURk

btw i did drop my airbox/afm several times on grass not sure if it had any effect
My car is a 1991 BMW 318i has the m42 engine

Title: Re: e30 running rich
Post by: deansweet on June 25, 2014, 05:54:32 PM

I highly suggest not adjusting the MAF like this guy did.
I had a spare and after I swapped it with my known 'bad idle' MAF the car idled just as bad so I decided to try what this guy did.
And just like one of the responses in the video, the car idle'd smoother than it ever had during my ownership but driving it under normal driving i.e. higher revs and such the car ran like dookie.

Look for intake leaks, O2 sensor, etc.

Title: Re: e30 running rich
Post by: Slowered318 on June 25, 2014, 11:10:14 PM

Quote from: deansweet on June 25, 2014, 05:54:32 PM

I highly suggest not adjusting the MAF like this guy did.
I had a spare and after I swapped it with my known 'bad idle' MAF the car idled just as bad so I decided to try what this guy did.
And just like one of the responses in the video, the car idle'd smoother than it ever had during my ownership but driving it under normal driving i.e. higher revs and such the car ran like dookie.

Look for intake leaks, O2 sensor, etc.

I'll second that... Pulled my cover off and played around with my sensor, now it's weak in the top 2,000 rpm.