In this video Kent will walk you through the step-by-step procedures he uses when diagnosing and repairing an older Mercedes diesel engine that either won't start or is very difficult to start. It is assumed you have either recently done a compression test or know your engine has good compression (and a recent valve adjustment for OM 616 and )M 617 engines). If your engine is worn out ( ie low cranking compression) then this WILL NOT help!
Product Details
Subjects covered in this video are:
- What is required for a diesel to start
- Checking for fuel flow to the injectors
- Inspecting the fuel in your tank
- Recommendations for what to do if no fuel at the injectors
- Checking for power to your glow plugs
- Location of glow plug strip fuse (models 1977 and newer)
- Testing glow plugs
- Signs of worn out glow plugs
- Reaming the carbon out in the pre-chambers
- Testing the results
- Recommendations if your diesel continues to have trouble starting
Related subjects not covered in this video (that could cause hard or no start):
- Engine compression testing (weak compression is referred to but actual testing is not covered)
- Engine timing (camshaft and injection pump)
- Engine driven mechanical lift pump
- Air in the fuel system
- Mechanical failures
Chassis/Models Used in Production: 1983 W123 240D
Information applies directly to the Following Chassis/Models: All diesels 1968 to 1985 W115, W116 and W123 diesel passenger cars
Information applies indirectly to the Following Chassis/Models: Principles of troubleshooting also apply to the 1986 to 1993 diesels (this includes the 1984 and 1985 W201 190D 2.2). Access to the glow plugs on these models is more difficult, but at least you do not need to adjust the valves on these 60x engines!
Total Run Time: 16:59 Minutes
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Important note: This video manual may or may not include all the information you will need to troubleshoot and/or repair your specific problem/s. Please read the full description carefully to determine if this video is applicable to your year and model and contains the information you are looking for. If not, please refer back to our "Solutions Finder" and enter your chassis number and the specific problem you are having to see if we offer a solution.
Related Products:
All 61x and Some 60x Diesel Engine Compression Tester Kit With Test Guide
APPLICATION:For 190D 200D 220D 240D 300D 300CD 300TD 300SD 300SDL. Also 350SD 350SDL 190D 2.5 300D 2.5 with conditions***
Diesel Engine Compression Test Guide by Kent Bergsma - Download
A diesel compression test is an extremely important engine diagnostic procedure. It should be done on any diesel you are planning to purchase. More than any other test, it can tell you if you are purchasing a healthy engine.
123 240D Monark Pencil Glow Plugs - Set of 4 with Instructions
Made in Germany. Application: Fits all 4 cylinder 240D diesel engines from 1980 to 1983 with pencil glow plugs. Excellent quality. They are built with the same materials and have the same specifications as the Bosch Duraterm pencil plugs.
Heavy Duty Carbon Reamer for Pencil Glow Plug Chambers
PENCIL GLOW PLUGS ONLY!! WILL NOT WORK ON MODELS WITH THE OLD STYLE LARGE THREAD SERIES TYPE. For 1978 to 85 300SD Turbos / 1980 to 93 240D / 300D 300TD 300CD 190D 300SD 300SDL 350SDL. When was the last time your glow plug chambers were reamed out?
Pencil Glow Plug 12 mm Special Tool - MADE IN USA
When using a pencil glow plug reamer, this modified 12 mm wrench will allow you to PUSH in on the reamer while turning - and let me tell you - this is needed when you have heavy carbon buildup in the prechambers.