Questions and Answers

1983 Mercedes 300D-T not starting

My car will no longer start. For a while when I turned the ignition key, I had to wait between 2-5 secs for the engine to start. Now, the starter is turning over, but other than that--nothing. The glow plugs seem to be good (I tested them at the relay without removing); the battery reads 12.3V (I know this is on the low side, but even with the car jumped by my other working vehicle, the car still won't start); and I just changed the fuel filter (I've been running biodiesel for 11 months and have changed the fuel filter 4 times since then) thinking this might be the issue. Still, nothing....

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87 300TDT Turbo spool up LOUD whine, engine runs but sluggish.

I have a 1987 300TDT with 119,000 original miles bought a year ago from the original owner. Yesterday while accelerating abruptly in traffic I heard a loud wind up sound (like the turbo was out of control), a loud "clink" sound from under the hood, and a puff of grey smoke followed- all within a 2 second range. The rest of the way home (about 8 miles) there was a lack of power and that same wind up sound- only in the range that the turbo would normally kick in: My question is of course... What is it and how to fix it? this is the 603 Diesel 3.0L 6cyl.

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560 Engine in 420SEL?

Hey Kent, Are the 420 block and the 560 block about the same size? I found a valve cover thats off a 560 that will fit my 420. Are the block and heads the same, just the stroke is different.I am going to pick and pull tomorrow for the valve cover and safety belts. Should I just grab the engine and use some parts for my 420 or even put the 560 inplace of the 420?

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instrument needles jumpy

Hi, I have a 1982 300TD. I am experiencing some strange instrument cluster behavior and I'm wondering if someone might chime in on how to fix it. I've removed the cluster a few times to make sure that all connections are sound and as far as I can tell, they are. Quite randomly, the fuel gauge and the temperature gauge start to jump a bit. If I switch the headlights on, the fuel and temperature needles get more jumpy, the buzzer goes on and off and the instrument cluster light turns off. The pressure gauge and others work as expected though I have to use a flashlight to see it. Thanks!

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Grinding Brakes

Hello, I just did a complete brake job on my 1979 300SD. Replaced all the rotors, calipers, and brake pads, as well as the master cylinder. It all went fine, except now when I turn, there is a grinding noise that comes from the front wheels, it's like the brakes are grinding, but it only happens when I'm not driving straight. Any Suggestions? Thanks, Jeff

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76 300D thumping noise

I have 76 300D that makes a thumping noise that I was certain was the exhaust pipe hitting the chassis/frame. I know this noise and was very surprised to find the exhaust pipe was tight and not the source of the noise. It is related to engine shake at idle. The car starts/runs great but has always had a rough idle. It only makes the noise when the car is stopped in drive. The car will stop making the noise if I shift to neutral. I think there is more to it than the change in rpm caused by putting it in neutral.

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