I got an universal diesel engine M3-20 3 cylinder diesel running rough on neutral when idle around 1100 to 1200 rpm. Anything above 1300 to 1400 rpm runs perfectly. Since I got it this what has been done:
Replace all engine mounts with new cushifloat mounts.
Replace Racor filter and fuel filter and fuel pump filter.
Remove all diesel fuel and put new star tron tank cleaner and empty 2 times tank.
Pour new diesel in tank.
Flush fuel system with liquid molly diesel purge, notice a little bit less of vibration when running with liquid molly but nothing significantly.
Will a bad injector be causing this problem of rough idle and work OK? around 1300 to 1500 rpm? or this could be something else I should be looking into?
Also I read this could be the nature of the engine being a 3 cylinder. I will try to do a couple videos to shown what I am looking at.
Thanks in advance.
Replace all engine mounts with new cushifloat mounts.
Replace Racor filter and fuel filter and fuel pump filter.
Remove all diesel fuel and put new star tron tank cleaner and empty 2 times tank.
Pour new diesel in tank.
Flush fuel system with liquid molly diesel purge, notice a little bit less of vibration when running with liquid molly but nothing significantly.
Will a bad injector be causing this problem of rough idle and work OK? around 1300 to 1500 rpm? or this could be something else I should be looking into?
Also I read this could be the nature of the engine being a 3 cylinder. I will try to do a couple videos to shown what I am looking at.
Thanks in advance.