Help D-Jet Mercedes M110 280CE

Hi Mads,

it absolutely makes no sense to try to correct the ignition fault via D-Jetronic adjustment. You have to first find the reason for your ignition fault. That is why I recommended a Bosch service around you with an ignition oscilloscope (I use an old Bosch Compactest). When you habe your ignition problems fixed, you can have a totally different scenario. Ignition problems with failing cylinders will especially create problems in idle-run. The higher enigne speed is, the less you will notice such problems.

Or if you are not sure about your timing light, try another one.
90% of injection and carburettor faults are ignition problems in reality.

Sorry it's been so long time since my last update... I Actually got the car running ok now.. i don't know where the fault was. but after i adjusted the MAP sensor a bit, it runs much better, so maybe it's closer to the original adjustment now..
Is there a way i can calibrate the MAP? i was thinking there must be some spec. at eg. 1 bar pressure or something like that?

But anyway, all your help got the car running again.. thank you for that

Mads

Hi Mads,

no sorry, you cannot tune and verify your MAP sensor. Only Bosch and e.g.. me can do .