I have a Mercruiser (cummins) 2.8 ES 200 with fluctuatingidle. The engine fluctuates +/- 100 rpm when running on idle.
If I increase the engine speed 100 rpm the fluctuating stops. When running onmax power it's missing 3-400 rpm.
Cold starting the engine is also a problem. The engine runs up to high RPM andcuts off after 2 sec.
After about 20 attempts to start the runs contiously with fluctuating idle.
What I have already done to solve the problem:
- Nozzles tested and adjusted by authorized workshop.
- High pressure diesel pump tested i bench by authorized workshop. Found OK
- MAP sensor switched with a new one.
- Diesel delivery hoses and pipes checked or air leak.
None of this solved my problem. Any suggestion about what causes the problem?
If I increase the engine speed 100 rpm the fluctuating stops. When running onmax power it's missing 3-400 rpm.
Cold starting the engine is also a problem. The engine runs up to high RPM andcuts off after 2 sec.
After about 20 attempts to start the runs contiously with fluctuating idle.
What I have already done to solve the problem:
- Nozzles tested and adjusted by authorized workshop.
- High pressure diesel pump tested i bench by authorized workshop. Found OK
- MAP sensor switched with a new one.
- Diesel delivery hoses and pipes checked or air leak.
None of this solved my problem. Any suggestion about what causes the problem?