I have not started my truck in a while doing als suspension, mikes downpipe, als brakes etc..., so i am ready to play again and when i was starting the truck it backfired really loud before it really even turned over, got it to start and set the timing and went to start again a few hours later and it backfired again when i turned the key on for maybe a second? Do you think a injector could be stuck, does speed pro have a flood mode? Any thing i should check? Jack
backfire
- Thread starter FLSY2730
- Start date
4C FED
Absolutum Dominium
Re: backfire
Yes, it does.
From Craig Smith:
The only number you really need to shoot for with the TPS is to have it read 80% or higher at WOT. If the TPS reads 80 or higher during engine cranking, the ECU will enter "clear flood mode." This fires the spark but not the injectors.
Craig
FLSY2730 said:
Yes, it does.
From Craig Smith:
The only number you really need to shoot for with the TPS is to have it read 80% or higher at WOT. If the TPS reads 80 or higher during engine cranking, the ECU will enter "clear flood mode." This fires the spark but not the injectors.
Craig
2cold said:
That is something i have not touched since i ran it at the pepsi show in march and then i brought it home and parked it doing all the other mods, so the plug wires were never touched, the battery was dead, so i recharged and this is where i am at.
So if the tps is at 80 at cranking how do resolve that?
nightdiver
Active member
Maybe its lean,try 15% more fuel at start up just to be sure
nightdiver
Active member
The Fast wont loose its memory for sure
What is your voltage readings ?
What is your voltage readings ?