Join Date: Mar 2002
Location: Austin, TX, USA
Re: over fueling
An important thing to consider is whether or not the engine is running in open or closed loop mode. When the engine is cold, the ECM sends a pre-programmed amount of fuel to the injectors. Once the engine is warmed up, it switches to closed loop mode and begins monitoring the O2 sensors to set the mixture. First step is to get the codes out of your computer. After having pulled two injectors though, you may have to clear the codes first and then get to misbehave to get a good read on them.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI