I'm pretty new here and I'm in the process of firing up my 40 Ford pickup. It has a 4.3 TBI and the TBI wiring is from Painless Performance. The engine runs but poorly. It is running very rich, it'll make your eyes water. The first problem I encountered was that the fuel pressure was way off (20PSI). I modified the fuel pressure regulator in the TBI and presently the pressure runs 11-12 PSI. This made the engine run better, before this it was impossible to get it to run with both injectors connected because of all the gasoline being admitted.
It seems the typical suspects are the CTS and the MAP sensor. Both are new and are the part number that Painless specified. The Computer is the part number that they specify as well but the Prom and Cal-pack are not (I neglected to check this when I was stock piling parts.) The guys at Painless didn't think this would cause the problem I'm seeing but wouldn't say for sure.
Does anyone here have any TBI experience?I would love to get some suggestions as to what to look for next.
BTW, the truck is a 1940 Ford pickup on an 86 Ranger chassis, wheelbase stretched to 112", 4,3 Chevy V6, TBI, 2" full dual exhaust with Flowmaster 40 series mufflers, 700R4 trans, 3.45:1 Ranger rear end.
The truck has PS, PW, AC/Heat/Defrost, electric door locks, tilt, cruise, AM/FM/CD HD radio, 200 watt amp and an 8" sub.
The cab is from US Bodysource, the bed is from Northern Classic trucks, the fenders are Wescotts and the doors, hood, running boards, grille, chin panel, and headlight buckets are original.
I did all the fabricating, assembly and bodywork myself. I had the final BC/CC applied at a friends shop. It's Meadowmist Green, a 56 Ford color. The truck is nearly finished except for some interior work and this injection problem. I'm hoping to hit the cruise nights starting this spring If it will run!
Thanks for reading!
It seems the typical suspects are the CTS and the MAP sensor. Both are new and are the part number that Painless specified. The Computer is the part number that they specify as well but the Prom and Cal-pack are not (I neglected to check this when I was stock piling parts.) The guys at Painless didn't think this would cause the problem I'm seeing but wouldn't say for sure.
Does anyone here have any TBI experience?I would love to get some suggestions as to what to look for next.
BTW, the truck is a 1940 Ford pickup on an 86 Ranger chassis, wheelbase stretched to 112", 4,3 Chevy V6, TBI, 2" full dual exhaust with Flowmaster 40 series mufflers, 700R4 trans, 3.45:1 Ranger rear end.
The truck has PS, PW, AC/Heat/Defrost, electric door locks, tilt, cruise, AM/FM/CD HD radio, 200 watt amp and an 8" sub.
The cab is from US Bodysource, the bed is from Northern Classic trucks, the fenders are Wescotts and the doors, hood, running boards, grille, chin panel, and headlight buckets are original.
I did all the fabricating, assembly and bodywork myself. I had the final BC/CC applied at a friends shop. It's Meadowmist Green, a 56 Ford color. The truck is nearly finished except for some interior work and this injection problem. I'm hoping to hit the cruise nights starting this spring If it will run!
Thanks for reading!