W126, BENZ AID - COMMON QUESTIONS AND ANSWERS

Poor MPG on 86 300 SDL

Since buying the car in 2004 I've always gotten 24-28 MPG city/highway/air on/air off. She's always be a quick start after I replaced the glow plugs in 2004. She charges down the highway as smooth as silk. A great traveling car.

The car sat idle last year while I was overseas. Since getting back home MPG has dropped to 10. No kidding, 10 MPG. I have changed all filters; air/ both fuel and oil. The car starts right up, idles nice, no smoke, no sputtering or hesitation while running or starting.

I've checked and replaced bad vacuum connections in the engine compartment. I have added diesel fuel additives in the tank, with no positive effect.

I've ordered the purge kit and will try that when it arrives.

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

1978 300cd with 617.952

Kent

My diesel starts great idles on all 5 no miss but when you start going down the road she misses intermittently at lower rpm quits at mid and high range rpm until she is up to temperature then she's fine she doesn't smoke and she has power up the kazoo any idea's? I have run 2 can of diesel purge set the valves no change. Bad injector maybe?

Thanks
Todd

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

w126 rear center console vent help please

My '82 w126 300sd center console rear vent (the one that exits out the back of the center console facing rear seat passengers) has been stuck open and when I pulled vent, I discovered why. Upon reinstalling, I have no vent function and it seems cable is now disconnected on the other end (front of car) the question is, where is the other end and where/how do I access? Thanks Kent!

Chassis Model Number

W126

Forums

Body and Interior Specific Aid

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