RepairPal is your advocate for car care advice and guidance

Q: 1987 300E mb hard to start on 1990 Mercedes-Benz 300E

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
I own a 1987 300E mercedes - problem is VERY hard to start in the mornings-will crank and crank then "catch" but die out,then crank and crank then eventually start but very rough-I let it "warm up" for about 15 min and it runs like a champ - no problems at all.Any ideas? Changed the spark plugs,put injector cleaner in the gas,run only premium gas
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
Your car has mechanical fuel injection, similar to that used by VW, Volvo, Porsche and other European cars. The system uses a censor to measure engine coolant temperature and uses this input to richen up the fuel mixture (like using a choke on an older car), the system may have a check valve to retain fuel pressure in the line, if fuel leaks back to the tank the system has to prime itself each time you try to start it., it also has a metering head that has a flap measuring air flow into the engine. Someone familiar with Bosch mechanical fuel injection will be best to look at your car.
somebody will for fuel accummalator probably are bad and check pressure regulator make sure working not leaking back to the tank
Didn't find what you were looking for?