Crank but no fire....

[NelsonMX]

Hi all,

I had an unusual glitch this afternoon. I drove to the store, about 10 minutes away, shut the car off and when I came back about 15 minutes later the starter engaged but the engine didn't start. I let the starter crank about 5 seconds before selecting the key off. When I re-engaged the starter about 5 seconds later it started right up and ran fine.....I haven't checked the codes as yet, but I suspect I will have a miss fire....The only thing I have done to the engine lately is new plugs about two weeks back.....and it has been running fine.

Anyone else ever have this happen??

Rgds,

Bob

Sorry, should have mentioned: 2004 Cayenne S....

Edited March 9, 2010 by NelsonMX

[wvicary]

Could be many things at fault, first guess would be a failing primary fuel pump.

[NelsonMX]

Yes, sounds logical.....

I checked for any codes and nothing. I would expect a P0230 for the fuel pump primary, but nothing at all.....not even a misfire.

I had a key battery low message earlier, but this has never prevented it from starting. Does the immobilizer cut ignition?

In the meantime I have started it about twenty times throughout the day and it hasn't missed a beat so far, so maybe just a glitch!!!

[DUTCH VanAtlanta]

Do these things have a Crankshaft Position Sensor? If yes, that's another possibility. They fail quite frequently on MB engines; and produce the exact same symptoms with no codes set.

Edited March 10, 2010 by DUTCH VanAtlanta