Backfire
I installed a new 400h.p. kit on my Mopar 360 over the winter. I started and ran the engine with the base settings to set the ignition timing. I played with the tuning and got things a bit "out of wack". So I reset the settings to the stock V8 configuration. I started it and it ran for a few seconds before it acted like it was loading up and died. Now I can only get it to start by getting into the gas pedal, and it acts like it's loading up again and it dies, usually with a backfire through the throttle body.
What could have gotten changed that didn't get reset when I went back to the base V8 setting?
It could be any number of things. But, simply going to default settings would not cause this. Verify your Initial settings. Does your dashboard show RPM when key On? Is your blue wire shielded? Do you have an injector hung?
My tach reading was very eratic.. How do I go about shielding it?
How would I know if an injector was stuck open? Fuel spraying when the key is turned on?
Ok, I just saw the thread on how to shield the tach wire. I will start with that, but I'm not sure that could be the problem because my issue happened very abruptly.
If you had erratic RPM readings the blue wire is most likely the issue. Not uncommon and can happen randomly.
I rerouted the tach wire and a few spark plug wires and now my pickup runs like a champ. If the rain subsides I will FINALLY get to take my pickup and my FiTech out on the open road. I'm excited!!!!!!
I'm sure I will be back looking for some fine tuning advice, but so far so good.
Thanks for the help guys!