BENZ AID - COMMON QUESTIONS AND ANSWERS

300td valve adjustment

I bought a 300td about 2 years ago and after 35000 miles i decided to check the valves. They were about.010in and .012in. the car was starting rough or not at all if it was cold (20F-30F). I already tightened up the vacuum system and ran two diesel purges which seemed to help for a day or two. from a previous 300 diesel i owned ,that had similiar symptoms, i noticed the car started better with about .012 and .015 clearances. I adjusted to this clearance and it helped a little. i know these settings are looser than called for but it seems to help. Is there risk to the engine at these clearances?

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Diesel Engine Specific Aid

420SEL - runs bad and at a loss

Okay, here's my trouble...I bought an old 1988 420 sel as a restoration project and spent over a year patching up and polishing the job. After a new suspension, new rims and tires, transmission repair, paint job, tune-up, and custom parts installation, I thought I was doing pretty good. In fact, the car looked sharp and I was well-pleased with the results. However, last year I drove to Myrtle Beach (from central Kentucky) and back.

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Body and Interior Specific Aid

Taxonomy upgrade extras

Questions and Answers

Chassis Model Number

W126

1988 300CE won't start

Hi there...I recently purchased a 1988 Mercedes 300 CE with 126,000 miles on it.....the car runs beautifully ..idles well...no miss fires...went out the other morning...it started fine...stopped the car to run an errand...came back...the car would try to turn over but not fire...almost like it was out of petrol..I thought perhaps the petrol gage was reading wrong..I added some petrol and it started fine...ran like it always does...changed the fluids and filters...car ran fine until it was time to back it out of the garage...it did the same thing....like it was out of gas...I understand the fue

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Body and Interior Specific Aid

Taxonomy upgrade extras

Questions and Answers

Chassis Model Number

W124

1981 300D: grinding noise near alternator/water pump...

I have a 1981 300D. A few weeks ago the charge indicator light came on, so I replaced the voltage regulator (thanks for the plastic tie), and the light went off. Two weeks later I was driving with the windows down, and heard an unfamiliar metallic noise coming from the engine. The sound is coming from the front - near the alternator and water pump area. Per your advice I poured water over the belts and...the noise stopped. I sighed in relief, until I noticed that the belt had slipped on the alternator, which had stopped spinning.

Chassis Model Number

W123

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Diesel Engine Specific Aid

240D overheating

My 1977 240D with 260,000 miles, which ran wonderfully up to the point where I decided that I need get the green stuff out, now has overheating issues. I replaced old coolant with the Zerex GO-5 per numerous reference on this forum and other sources. While changing over I also back flush the cooling to confirm that all of the old coolant was completely removed. After purged the system of air through the bleed screw in the top of the thermostat housing and running the heater, I thought I was back on the road as good as ever.

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Body and Interior Specific Aid

Taxonomy upgrade extras

Questions and Answers

Chassis Model Number

W123

"Core Support" location on W126

I bought an FM10 water separator filter for my 1982 300SD, and in the instructions it suggests that I mount it to the left front "core support" bracket. After surveying for a spell, I was unable to locate this bracket in the engine compartment. Can anyone point me, via other reference points, to this bracket? Thanks in advance, tbird

Forums

Diesel Engine Specific Aid

Taxonomy upgrade extras

Questions and Answers

Chassis Model Number

W126

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