E280 hard to start
06-20-2024, 06:02 AM
#1
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E280 hard to start
My turbo needed replacement and my grandpa said that since im doing a turbo change i might aswell change the swirl flap rods. After i removed everything and the intake manifolds i realized that the flaps were already removed by a previus owner and that i forgot to disconect the battery before the disasembly! so i started assembling everything back. After i disconected the battery (I also had to change the hp fuel pump)
After assembly i turned the engine, after about 15 seconds the engine started and was running flawlessly. I decided to do a testdrive. I made a trip around the neighborhood realizing that the car was in limp mode. As soon as i was approaching my garage the car stalled?
it started up after about 15-20 seconds of turning. I drove it inside and was waiting for the diagnistics to arrive. I noticed that the car was hard to start now. Only after about 20-30 seconds the car would start. I checked if there was fuel going to the injectors through the rails and there was a steady flow on all injectors, i ran the diagnostics, alot of historic faults since i forgot to disconect the battery. I deleted everything and tried again. Still, 20-30+ seconds to start the car???
No fault are coming up and no fuses blown.
what could it be?
After assembly i turned the engine, after about 15 seconds the engine started and was running flawlessly. I decided to do a testdrive. I made a trip around the neighborhood realizing that the car was in limp mode. As soon as i was approaching my garage the car stalled?
it started up after about 15-20 seconds of turning. I drove it inside and was waiting for the diagnistics to arrive. I noticed that the car was hard to start now. Only after about 20-30 seconds the car would start. I checked if there was fuel going to the injectors through the rails and there was a steady flow on all injectors, i ran the diagnostics, alot of historic faults since i forgot to disconect the battery. I deleted everything and tried again. Still, 20-30+ seconds to start the car???
No fault are coming up and no fuses blown.
what could it be?
Yesterday, 01:35 AM
#2
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Join Date: Apr 2019
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MY'14 W212 M276 3.5NA @55kMi
low pressure!
My turbo needed replacement and my grandpa said that since im doing a turbo change i might aswell change the swirl flap rods. After i removed everything and the intake manifolds i realized that the flaps were already removed by a previus owner and that i forgot to disconect the battery before the disasembly! so i started assembling everything back. After i disconected the battery (I also had to change the hp fuel pump)
After assembly i turned the engine, after about 15 seconds the engine started and was running flawlessly. I decided to do a testdrive. I made a trip around the neighborhood realizing that the car was in limp mode. As soon as i was approaching my garage the car stalled?
it started up after about 15-20 seconds of turning. I drove it inside and was waiting for the diagnistics to arrive. I noticed that the car was hard to start now. Only after about 20-30 seconds the car would start. I checked if there was fuel going to the injectors through the rails and there was a steady flow on all injectors, i ran the diagnostics, alot of historic faults since i forgot to disconect the battery. I deleted everything and tried again. Still, 20-30+ seconds to start the car???
No fault are coming up and no fuses blown.
what could it be?
After assembly i turned the engine, after about 15 seconds the engine started and was running flawlessly. I decided to do a testdrive. I made a trip around the neighborhood realizing that the car was in limp mode. As soon as i was approaching my garage the car stalled?
it started up after about 15-20 seconds of turning. I drove it inside and was waiting for the diagnistics to arrive. I noticed that the car was hard to start now. Only after about 20-30 seconds the car would start. I checked if there was fuel going to the injectors through the rails and there was a steady flow on all injectors, i ran the diagnostics, alot of historic faults since i forgot to disconect the battery. I deleted everything and tried again. Still, 20-30+ seconds to start the car???
No fault are coming up and no fuses blown.
what could it be?
I am extremely surprised you got into limp mode without any fault.
What scanner are you using ?
This sounds 100% like fuel delivery issue.
Read the rail pressure before crank, during crank and after start up
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