Thanks in advance for your help. I have a 95 S320 with 80K. Recently when I go to start the car, it takes about five to seven seconds of cranking before it will start. I changed the fuel filter with no results, then I replaced the fuel regulator with no results. No codes and no other symptoms. Spark plugs and wires were replaced within the last year. Also recently replaced the engine wiring harness.

I don't hear any noise from the fuel pump and like I said once it starts it runs great. If you turn it off and immediately restart it will do so with no problems. If it sits for awhile or first thing in the morning, it takes 5-7 seconds for the engine to crank.

Any suggestions on what to try next? Should I go ahead and replace the fuel pump. kind of confused without any codes to point me in the right direction. Thanks for your help.

Shayne

 

sometimes if the injector is leaking when you shut ooff the engine and accumulate on the cylinder...can cause this problem.

it takes time for the fuel to burn, and therefore long cranking period.

to eliminate this possibility, please try removing a couple of sparkplugs and see if they are wet. crank once and check them.

 

Would there be some (even a little) black smoke if there was a need to burn off extra gas? I don't get any smoke. Seems as if the car is not getting enough fuel or staying primed.

 

OK. I DO get some black smoke upon starting. (disregard my last post). So, would you suspect that the injectors are leaking and It must burn off excess fuel before starting? If so, why does it start first thing in the morning without problems??? confused.