Quote:
Originally Posted by olddog
ECU is a Ford A9L EEC-4, so it is sequential, and I have verified the cam is the correct firing order for the ECU. I believe Ford puts the fuel in before the intake valve opens, so the fuel has time to vaporize sitting on top of the valve.
So you think the carbon is coming from gasoline, correct?
When I originally saw it and started this thread, I thought is was a much thicker layer than it turned out to be.
|
ditto on gary's post.......
yes in the beginning of the thread i got the impression there were globs of crap in there, if it is just a dust, so to speak, Gary seems to have nailed it.
one thing though, this is assuming you have an air filter actually doing its job, dirt isn't getting drawn in there is it?