fuel pressure regulator ?

[InDeepShitNow]

Originally Posted by shanes76

in deep- have you looked on the inside of your plenium for washing, mine had a bad hesitation when I got it and my return lines were leaking, and it kinda sounds like yours, mine didnt have any trouble starting and hesitated up to about the point of shifting in to 2nd then it would smooth out, you might want to check that, I took the big round thing off the top of my plenium and used a flash light and seen the drivers side was really clean and thats where the return lines are

The big round thing you're talking about is probably the fuel injection, and I have tried, but that thing is in there pretty good. I wonder if I actually have to remove the plenum to take the F.I. off?

[shanes76]

no its not the feul injection, I think its called an IMTV valve, its under the vortec cover and has 2 torq screws holding it down

[shanes76]

if you take the screws out and kida spin it a little and maybe use a screwdriver to pry up easily it should come out and I bet you will see your problem in there, I know there is an O ring on it and it is actually has a little bit of weight to it as well

[shanes76]

you could take the top off and as long as you dont damage the gasket you can reuse it, but if its clean on the drivers side then its the return lines and if its on the passenger side its the regulator

[InDeepShitNow]

Originally Posted by shanes76

no its not the feul injection, I think its called an IMTV valve, its under the vortec cover and has 2 torq screws holding it down

Is it near the back of the manifold? I thought that was the F.I.? What's IMTV stand for?

[shanes76]

yes its near the back under the vortec cover It stands for Intake manifold something valve- I forget now- but it has a wing type deal on it and I guess that it turns as more air is entering the intake, it will come out, it is hard to see in there though so it may be just as well to take the top off so you can have a good look, the injection spider is located inside, just dont mess with the lines- could cause more problems

[InDeepShitNow]

Originally Posted by shanes76

yes its near the back under the vortec cover It stands for Intake manifold something valve- I forget now- but it has a wing type deal on it and I guess that it turns as more air is entering the intake, it will come out, it is hard to see in there though so it may be just as well to take the top off so you can have a good look, the injection spider is located inside, just dont mess with the lines- could cause more problems

Will do... Thanks for the info.

[shanes76]

no problem, my lines werent leaking alot but it fills the intake up with gas - I mean mine was barely leaking, the return are 60.00 and the regulator is 50.00 just have to see which one you need, just look for a really clean side inside

[InDeepShitNow]

Originally Posted by shanes76

no problem, my lines werent leaking alot but it fills the intake up with gas - I mean mine was barely leaking, the return are 60.00 and the regulator is 50.00 just have to see which one you need, just look for a really clean side inside

I unplugged the sensor, and took the 2 screws out, but man, that shit is seated in there pretty good! Having a helluva time turning it, or even getting it out! Looks like I may have to pull the plenum. Don't they make computers that connect OBD-1 and will read which sensors are failing, etc...?

[shanes76]

I think, but if those lines are leaking its not gonna show up on a reader, it only takes about 10 minutes to take the top off- the regulator isnt gonna show up either

[shanes76]

is your engine light on? if so you can use a paper clip to get the codes out of it, mine showed oxygen sensor but that was because my lines were leaking

[InDeepShitNow]

Originally Posted by shanes76

is your engine light on? if so you can use a paper clip to get the codes out of it, mine showed oxygen sensor but that was because my lines were leaking

No codes. At first, I had codes 22,23,43,44... I replaced everything mentioned earlier in the thread. TPS, MAP, ECU, Ignition Coil, Ignition Control Module, cap, button, wires, plugs, fuel pump.... lol I have replaced everything damn near. Hooked a code reader to it, rather than jumping pins, and got 23, which is TPS. (I had just replaced TPS that day) After clearing the codes, I don't get any more codes at all. Runs like a freakin scalded dog when it gets out of the hesitation and finally catches. So I know the timing and fire is fine... It's gotta be a fuel thing. I get both intake and exhaust backfires when this issue occurs, when I floor it. So I poured a large bottle of rubbing alcohol in the tank to see if I had water in the tank, but no results as of yet.
Like I said, tried removing the damn IMTV and that sucker won't budge. I even used a chisel wedged beneath it and tried prying it up... No go. Have a buddy coming over with another computer to see if we can see if relays are opening/closing properly, if the computer will do that. Hopefully, we find the issue, if not, I will then proceed to remove the plenum for further inspection.

[shanes76]

Im telling you I believe the problem is inside the plenium, mine did the same thing- what happens is all the extra gas in the intake and its overloading, here is something you can do pull out the #3 plug plug and # 4 plug and look at them I bet at least one of them dont look like the others on mine it was the #3 plug your getting the leaking fuel and no computer will show this

[InDeepShitNow]

Originally Posted by shanes76

Im telling you I believe the problem is inside the plenium, mine did the same thing- what happens is all the extra gas in the intake and its overloading, here is something you can do pull out the #3 plug plug and # 4 plug and look at them I bet at least one of them dont look like the others on mine it was the #3 plug your getting the leaking fuel and no computer will show this

I don't doubt you, friend... That's why I'm lining it up to get these parts up. I just hope it solves my problem. As of today, I've dumped $900 into my truck in the last two weeks...

[shanes76]

I will almost promise this is your problem as I just fixed mine about 3 weeks ago, let me know what you find