I own a Mercedes Benz 280E 1972, it doesn’t currently start and I’ve been told countless times that it’s the started motor. The only issue is I can hear the starter motor going off it’s just the engine doesn’t run, I think it’s an issue with the fuel.
I’ve replaced the leads, spark plugs and fuel pump and have ruled it down to either
- the starter motor
- the fuel and air filters
- the fuel injectors
- or the timing chain
Was there anything that could be added or ruled out as I’ve got close to no clue what I’m doing. I have the owners workshop manual for the Mercedes Benz and have just been working off that and doing basic diagnostics.
so many things… which engine… as i don’t see it in my north american parts listing… straight six ? with D jetronic??
does the starter turn the crankshaft when you turn the key??
do you have compression while cranking. sometimes you need to pull a spark plug and use a compression tester…
do you have fuel pump pressure using a fuel injection pressure tester… you will need this one to do CIS on a benz https://www.harborfreight.com/deluxe-fuel-injection-service-kit-58817.html
so… does it crank…
do you have compression while cranking…
do you have fuel pressure… does not matter that the pump is new… does it turn on and build pressure at the filter nut when you change it to the fuel pressure test fitting. or at the proper place on the fuel injection metering block.
you also have this site… https://www.benzworld.org/
do you have the D jetronic book… https://w107.pbworks.com/f/DJetronic.pdf