Hey guys,
So I have been having an issue with my s52 w/m50 manifold swap running lean and stumbling/rough idle. I have checked for vacuum leaks. I found a few and fixed them. I may still have a slight leak from the IAT in the intake boot. I'm pretty sure it's no where near bad enough to cause it to run the way it is. I have sprayed with brake clean in that area and it doesn't change the idle much at all. If I add alternate fuel in front of the maf, it smooths out. I had codes 227, 228, 202 and some misfire codes. They all have to do with running lean. I have a strong suspicion that the ccv set up or the ccv is bad. I followed this ccv routing http://www.rmeuropean.com/bmw-m50-manifold.aspx
On the oem set up with the s52 manifold the cyclone valve plumbs into the dipstick and not into the idle control valve. So, it is possible that I'm drawing too much vacuum from the bottom of the cyclone or is the cyclone itself bad? How exactly would I tell if it's bad?
Thanks in advance!
So I have been having an issue with my s52 w/m50 manifold swap running lean and stumbling/rough idle. I have checked for vacuum leaks. I found a few and fixed them. I may still have a slight leak from the IAT in the intake boot. I'm pretty sure it's no where near bad enough to cause it to run the way it is. I have sprayed with brake clean in that area and it doesn't change the idle much at all. If I add alternate fuel in front of the maf, it smooths out. I had codes 227, 228, 202 and some misfire codes. They all have to do with running lean. I have a strong suspicion that the ccv set up or the ccv is bad. I followed this ccv routing http://www.rmeuropean.com/bmw-m50-manifold.aspx
On the oem set up with the s52 manifold the cyclone valve plumbs into the dipstick and not into the idle control valve. So, it is possible that I'm drawing too much vacuum from the bottom of the cyclone or is the cyclone itself bad? How exactly would I tell if it's bad?
Thanks in advance!
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