My C70 has developed an intermittent start and die problem; it starts, starts to go to high-idle, then dies. If I cycle the key off and then back on, crank it, cycle off and on again, it will start and promptly die as it hits high idle (cold engine - mostly). When I go through this ritual the third time it usually stays running. Since it is intermittent and a recent development, I'm at a loss. Any suggestions?

 

Do you have another key you can try?

Also try turning the key on and off a few times before starting it and see if that helps. If it does then for some reason the fuel is bleeding back to the tank.

 

Have tried with both keys; doesn't seem to have an affect; but will definitely try cycling the fuel pump. Thanks

 

Try and report back please.

 

Cycling the pump seems to work; so what do you think?
- fuel pump?
- pressure regulator?
- leaking injector?

 

Possibly fuel pressure regulator or fuel pump.