Runs Rich 1 Week After Steam-Clean.

  • BMW 528
83' 528e - Automatic / 200k Miles

Hello Gents.

It's been 1 week since washed motor.

* Hood Open In Hot Sun Every Day Since

* Dist Cap Replaced

* AFM Checked

* New Fuel Pressure Reg Installed

* Installed New Platinum Plugs.

Car fired right-up, but quickly loaded-up -w/black smoke from exhaust. Would NOT IDLE, so I unplugged ICV so would idle, as then drove about 5 miles - car ran like rocket, but had to keep foot on gas at lights.

Tried to start 2 hrs later - BARELY started -CHUGGED to store with foot to floor. Wouldn't go faster than about 20 mph. BARELY made it home 1 mile. Next day wouldn't start.

Pulled wet plugs - cleaned, re-installed - started, but CHUGGED again, wouldn't idle - Revved for about 3 minutes - loaded-up again, now NO START.

Please H E L P.

I don't have enough hair to pull-out !
Do you
have the same problem?
Thursday, August 2nd, 2007 AT 1:31 AM

1 Reply

First request I have is to install the original equipment spark plugs in your car. The M-20 motors do not like platinum plugs! As for the rich running, what this sounds like is you may have damaged the coolant temp sensor. The DME depends on the signal to adjust fuel trim and you might have damaged it during the cleaning process. Also make sure everything is dry underhood, water will pool in the sparkplug recesses, check all electrical connections and repost to tell me what you have learned
Was this
Saturday, August 4th, 2007 AT 12:25 PM

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