SB

Where's the dislike button. That sucks !

Again, here's their listing:

New (Not reman) Eichlin 218058

OMC Marine 4.3L 180 hp Gi 1996 - 1996
OMC Marine 4.3L 205 hp Gi 1997 - 1998
OMC Marine 5.7L 250 hp Gi 1996 - 1997
OMC Marine 5.7L 280 hp GSi 1997 - 1998
Volvo Penta Marine 4.3L 180 hp Gi 1995 - 1996
Volvo Penta Marine 4.3L 205 hp Gi 1997 - 2000
Volvo Penta Marine 4.3L 220 hp Gi 2001 - 2001
Volvo Penta Marine 4.3L 225 hp GXi 2002 - 2007
Volvo Penta Marine 4.3L 225 hp OSi 2003 - 2005
Volvo Penta Marine 4.3L 225 hp OSi 2007 - 2007
Volvo Penta Marine 5.7L 225 hp GLi 1997 - 1997
Volvo Penta Marine 5.7L 250 hp Gi 1994 - 1997
Volvo Penta Marine 5.7L 255 hp Gi 1994 - 1994
Volvo Penta Marine 5.7L 280 hp Gi 2001 - 2002
Volvo Penta Marine 5.7L 280 hp GSi 1997 - 2000
Volvo Penta Marine 5.7L 315 hp GSi 2001 - 2001
Volvo Penta Marine 5.7L 320 hp GXi 2002 - 2002

As far as vehicles:
Chevrolet Truck C1500 1/2 Ton - Pickup 7.4 L 454 CID V8 1990 - 1993
Chevrolet Truck C1500 1/2 Ton - Pickup 7.4 L 454 CID V8 1990 - 1993
Chevrolet Truck C2500 3/4 Ton - Pickup 7.4 L 454 CID V8 1991 - 1993
Chevrolet Truck C2500 3/4 Ton - Pickup 7.4 L 454 CID V8 1991 - 1993
Chevrolet Truck C3500 1 Ton - Pickup 7.4 L 454 CID V8 1988 - 1993
Chevrolet Truck C3500 1 Ton - Pickup 7.4 L 454 CID V8 1988 - 1993
Chevrolet Truck C3500HD 1 Ton Truck 7.4 L 454 CID V8 1991 - 1993
Chevrolet Truck C3500HD 1 Ton Truck 7.4 L 454 CID V8 1991 - 1993
Chevrolet Truck G30/3500 1 Ton Sport Van 7.4 L 454 CID V8 1988 - 1993
Chevrolet Truck G30/3500 1 Ton Sport Van 7.4 L 454 CID V8 1988 - 1993
Chevrolet Truck G30/3500 1 Ton - Van 7.4 L 454 CID V8 1988 - 1993
Chevrolet Truck G30/3500 1 Ton - Van 7.4 L 454 CID V8 1988 - 1993
Chevrolet Truck G30HD 1 Ton 7.4 L 454 CID V8 1993 - 1993
Chevrolet Truck G30HD 1 Ton 7.4 L 454 CID V8 1993 - 1993
Chevrolet Truck K2500 3/4 Ton 4WD - Pickup 7.4 L 454 CID V8 1991 - 1993
Chevrolet Truck K2500 3/4 Ton 4WD - Pickup 7.4 L 454 CID V8 1991 - 1993
Chevrolet Truck K3500 1 Ton 4WD - Pickup 7.4 L 454 CID V8 1988 - 1993
Chevrolet Truck K3500 1 Ton 4WD - Pickup 7.4 L 454 CID V8 1988 - 1993
Chevrolet Truck P30 1 Ton - Step Van 7.4 L 454 CID V8 1990 - 1993
Chevrolet Truck P30 1 Ton - Step Van 7.4 L 454 CID V8 1990 - 1993
Chevrolet Truck R20 3/4 Ton - Pickup 7.4 L 454 CID V8 1987 - 1987
Chevrolet Truck R20 3/4 Ton - Pickup 7.4 L 454 CID V8 1987 - 1987
Chevrolet Truck R2500 3/4 Ton - Pickup 7.4 L 454 CID V8 1988 - 1989
Chevrolet Truck R2500 3/4 Ton - Pickup 7.4 L 454 CID V8 1988 - 1989
Chevrolet Truck R30 1 Ton - Pickup 7.4 L 454 CID V8 1987 - 1987
Chevrolet Truck R30 1 Ton - Pickup 7.4 L 454 CID V8 1987 - 1987
Chevrolet Truck R3500 1 Ton - Pickup 7.4 L 454 CID V8 1988 - 1991
Chevrolet Truck R3500 1 Ton - Pickup 7.4 L 454 CID V8 1988 - 1991
Chevrolet Truck Suburban C2500 3/4 Ton 7.4 L 454 CID V8 1992 - 1993
Chevrolet Truck Suburban C2500 3/4 Ton 7.4 L 454 CID V8 1992 - 1993

SB

Well, how do you score a good set of used factory one's ?

It seems - agreeing with Tailgunner - all the others just don't want to open or seat against the 30psi fuel psi.

SB

His prior (last)set tried where the TJ11's.

nunnink23

Should we remove all doubt that I am making some sort of catastrophic mistake and buy the diacom? I have a pretty solid understanding of this engine by now (I think).

Does the diacom have built in parameters to reference? I suppose the service manual would have that.

Just to recap, my timing was 8 degrees BTC in base timing mode at 1100 rpm. My fuel pressure is good. My ecm is good, good vaccum when running, and good compression.

Is there any way one of my old sensors was bad, and the new one was also bad, combined not allowing it to start? I figured that's where the diacom comes in, so I can read sensors.

Lastly, is there any benefit to me sending you my TBI unit? Is it possible I'm a complete fool and messed the whole thing up? Could you bench test them?

buck35

Not sure about questions 1,2, and3 but #4 most definitely. Its easy to take something apart and then days, weeks or even months later miss a critical step on the reassembly end . You really need a second set of eyes to look over what is happening here.

nunnink23

Buck35 - good point.

I just put the factory injectors back in, same as before, no start and won't stay running if forced to start with some extra fuel.

Then I put the TJ11's back in, and she started up. She didn't like it, and stalled twice, but it eventually stayed running. Just bogs as usual when revved. It's clear the TJ11's are spraying more fuel, but I think it's extremely lean still. I don't get any lean backfire, but it bogs so bad when revved.

I'm going to look into the walker injectors when I get back from the marina. Maybe it's worth trying those.

TG - should I try the TJ 17's? You mentioned they were used in high pressure applications, but flow less at 13 psi than the TJ11's. Maybe worth a shot?

I wish I could get my hands on some Black/yellow gm injectors.

Pliant

Post the injectors brand and models you have used.lots of information here let's keep it simple. And you rebuilt the TBI simple yes but that regulator is a ***** to get in right.

By the way a simple light neon light on the injectors would have displayed the issue

nunnink23

I have used my factory ones - Although I have no proof that they are OEM

I used Standard TJ11's

And just today Napa/Echlin 218058

I will post the walker part numbers that Rock Auto claims fit my boat in a few mins, not at the computer yet.

Maybe this is a dumb question, but if the regulator wasn't in right, wouldn't I see a change in fuel pressure? Let's say I took the regulator out all together, wouldn't I see an extremely low fuel pressure (measured on the fuel inlet side of the tbi)? Because with a broken or missing regulator fuel should just cycle in a loop from the high pressure pump back to the fuel cell. Right? So isn't the fact I have 30-33 psi an indication that my fuel pump is good, and my fuel pressure regulator is also holding pressure?

nunnink23

One more thing. Should I pull my timing cover back off and triple check my cam timing? It would cost me $100 with gaskets and a new timing cover since they can't be reused. Although I am very confident that I set it right, anything is possible.

Pliant

If your pressure regulator is not working you would have no way of knowing