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Old 05-05-2006, 06:39 PM
Registered User
Join Date: Dec 2005
Location: San Antonio, Texas
Posts: 81
'92 300D power loss and black smoke???

Ive noticed some interesting issues with my new to me 92 300D 2.5Turbo. There are basically two different conditions where Ive noticed this malfunction.

1. Highway speeds at 80 MPH and 3200 RPM there is a distinct power loss and a small amount of black smoke from the exhaust. If I back off the accelerator a bit and let the MPH or RPM drop the power returns and the car can again accelerate to the above condition. Again, the power drops out at 80/3200.

2. During a hard acceleration from a stop Ive noticed the same power loss and smoke at various speeds and RPMs but its by far more intermittent.

In the past few days I ran two cans of the Molly Diesel Purge through the engine and added a can of BG 44K in the fuel tank.

Should I remove and clean the EGR? Any ideas would be very appreciated.


Brett Naquin
San Antonio, Texas
San Antonio, TX.
1983 300D
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Old 09-22-2008, 06:54 PM
Join Date: May 2005
Location: CALIF
Posts: 508
Low power

1984 300d turbo 147k
replace your fuel left pump and fuel filters
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Old 09-22-2008, 06:59 PM
Posts: n/a
Ignore RAYMOND485.

Just change your fuel filters.

There is the Diesel Discussion for Diesel related questions. This forum is for g@s engines.
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