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1992 Mercedes-Benz 300SD Question: This car is actually 1986 300 SDL

 

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MICKEY007, Madisonville, KY, July 31, 2009, 06:00
 Rookie

I have not done a compression test, but the head gasket is suppossed to be blown. Now my question is will this keep it from running?

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, July 31, 2009, 07:58
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     Master

    A blown head gasket may allow coolant to leak into the cylinders and hydraulic lock the cylinder. If enough coolant enters the cylinder on the compression stroke the valves are closed and the piston travels upward trying to compress the coolant which is a solid, it becomes unable to compress a "solid" and prevents the engine from starting. A badly blown head gasket in which case the cylinder no longer contributes or makes power will make the engine difficult to start as a diesel engine needs good compression to build heat to produce combustion and run.

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  • Answer #2

    backyard tech July 31, 2009, 08:36
     Master

    Common! it's clear someone told you you had a blown headgasket. NO YOU CANNOT DRIVE THE CAR!!!! Unless of course you are up to buying a new engine. That is more than the car is worth!

    If you are going to let it sit that long you'll have to put an additive in the tank. Diesel fuel goes bad alot quicker than gas.

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  • Answer #3

    autopros July 31, 2009, 08:49
     Enthusiast

    I agree-Don't drive the car in this condition. It will only cause catastrophic engine failure!

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    MICKEY007, July 31, 2009, 08:54
     Rookie

    No I do not want to drive the car but I just wanted to here it run, because it has sit for longer than a year...

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