Hi all, new to the forum, looking for any info that would be beneficial on these tbi systems.
I have a 93 chevy kodiak with the 366 gasser in it and I'm really having a hard time getting it to run right. I know this site is for the gmt 400s but I was hoping someone on here could just share any information.
The truck starts good, but seems like it runs really poorly to me, and as it warms up it seems like it gets worse. I run it up and down the road a couple times and it can't really even get out of it's own way. it seems like it has a miss that's inconsistent as well.
I've replaced: iac, map sensor, injectors, fuel pressure diaphragm, plugs, wires, cap (haven't been able to get a rotor yet), coil, coolant temp sender on the intake manifold, oxygen sensor.
Tested: fuel pressure 20 psi (my gauge works to 100psi if that matters)
Tps: .55v at idle, 4.44v at wot
Codes: only showed code 12
I had a friend look at it and he messed with the timing when it was running but that didn't help much, I tried spraying around the intake manifold with starting fluid to see if it had a leak but it didn't seem to, I checked the vac lines on the engine when I replaced the sensors and no leaks, I checked the egr and it works like it's supposed to, cold compression is between 135-150.
Any suggestions? I am really confused on this an I've already thrown a lot of parts at it.
I have a 93 chevy kodiak with the 366 gasser in it and I'm really having a hard time getting it to run right. I know this site is for the gmt 400s but I was hoping someone on here could just share any information.
The truck starts good, but seems like it runs really poorly to me, and as it warms up it seems like it gets worse. I run it up and down the road a couple times and it can't really even get out of it's own way. it seems like it has a miss that's inconsistent as well.
I've replaced: iac, map sensor, injectors, fuel pressure diaphragm, plugs, wires, cap (haven't been able to get a rotor yet), coil, coolant temp sender on the intake manifold, oxygen sensor.
Tested: fuel pressure 20 psi (my gauge works to 100psi if that matters)
Tps: .55v at idle, 4.44v at wot
Codes: only showed code 12
I had a friend look at it and he messed with the timing when it was running but that didn't help much, I tried spraying around the intake manifold with starting fluid to see if it had a leak but it didn't seem to, I checked the vac lines on the engine when I replaced the sensors and no leaks, I checked the egr and it works like it's supposed to, cold compression is between 135-150.
Any suggestions? I am really confused on this an I've already thrown a lot of parts at it.