Questions and Answers

differential gear ratio changing speedometer function?

I am excited to install the taller gearset differential, purchased from mercedessource, in my 81 300D. I'm wondering if the new gear ratio will affect the speedometer function. I have an opportunity to acquire a good speedo from a turbo if its necessary. Thanks...

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starting problems

I ahve recently been given a 1980 300d gold wagon, it is not running, why? ...I have replaced fuel filters except for the tank one also return lines, glow plugs, glow plug relay did a valve ajustment replaced battery... the motor cranks over and seems like it wants to catch but nothing what could this be ?// any ideas would be alot of help

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300 D Valve adjustment

I purchased the Mercedes Source Valve Adjustment wrenches and Manual soon after purchasing my first Mercedes (1984 300 D). And, faithfully, the valves have been adjusted ever since. ....Until today.. After adjusting 9 valves, the tenth one will not adjust. It is the exhaust valve on cylinder #2. I can't get the adjustment past .008in. Does this mean that the valve or seat is worn beyond tolerances? Or, am I missing a 'simple' solution? cory

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Car shakes violently. Repair front end strut bearings?

Can anyone advise me on repairing worn struts and bearings? When I drive my 87 300SDL, it shakes violently if I'm going 40-50 miles an hour. A mechanic has identified the strut bearings as the problem. (I'm not entirely sure what that means.) He has quoted me $60 each side for the parts, and 4 hours labor charge. Does this sound reasonable? Can I get the necessary parts on this site for less? Is this a repair that could be done at home? I appreciate your replys. Thanks, Erin

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The Injector line at the Firewall - You know, the one with the nail it.

Hi Everyone, Just want to first also throw my 2 cents in that this is the best Mercedes Site - period. All books and tools I have received - work, so please do shop here. Also, I have found things generally are easier to do than you expect.

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Wagon rear hydraulic suspenson

i have a 230te estste 1991 the problem is that i keep getting engine oil in the hydrolic suspension tank i know this as i have drained it off back down to empty after doing this within a week the oil light is back on on the dash and the suspension tank is full i cant see how it is happening would like to know how the oil can get into the tank .refrence it being lumpy it just feels like there is too much air in the tyres have set them to the correct pressure and that dosnt make any difference even tried a little less but no difference is that better info for you ps it rear hydrolic suspension

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Small vacuum lines

I recently purchased a 79 300TD wagon. I have discovered many hidden problems with the car since I purchased the vehicle. The main one is the discovery of a 3" hole behind the battery and tray. It was hidden by a poor fiberglass patch job and the battery.This has been leaking into the car and sitting on the rear passenger floor boards. The floorboards are also rotting and hidden by rubber undercoat. Anyhow, when I bought the car I knew it needed a new heater servo and amplifier.

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Loud reverberating whining noise coming from dashboard

Roughly 5-10 minutes after start (seemingly on colder days) my 1978 300D emits a loud reverberating whine that seems to come from the driver's side of the dash. While intermittent, it is quite unsettling. The best description I can give for the sound is that it is similar to the sound one might hear from a poorly lubricated fan (where the grease in the motor is caked with grime). The sound happens without either climate control or defrost on. Is it A/C related or something more serious? I know the vacuum system is in that general vicinity, but what else might be causing the problem?

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