Calling all m103 guru's - Cooling and starting issues - PeachParts Mercedes-Benz Forum

lorainfurniture · #4 04-18-2016, 12:31 AM

Quote:

Originally Posted by Kofi

but when the car is stored in underground heated it starts 50% of the time no problem but when outside its just dying and misfiring, ill post a video of what im talking about

The situation is more complex than I can explain. Basically, 2 or 3 of your injectors leak, flooding the 3 cylinders. On the three, the valves may or may not be open, allowing the fuel to evaporate. Sometimes not. You hard start is basically intermittent. I had the same issue with my 300e years ago and the injectors completely cleared it up.

The m103 engine needs spark plugs every year or 16,000 miles
Cap and rotor every 2 years/ 32k
Wires every 4-5 years/ 50k

Only use genuine MB parts or Bosch.

If it's been a while since your last tune up, I would do that first.