|
Perhaps the AFM is not able to close all the way, happens if something jams it. The clearances are tight top and bottom. It is running very rich, possibly more than what the O2 feedback adjustment is capable of. Also check the vacuum hose on the fuel pressure regulator. If the hose is off or leaky, the fuel pressure is increased at resulting in more fuel. Normally the vacuum will significantly decease the fuel pressure at idle. Under load the fuel pressure might be more correct. This is in line with symptoms.
Last edited by KitCarlsonEMS; 08-13-2008 at 01:52 PM..
|