Very low power output after swap???

[DieselS10]

I have an issue(s) with my LLY that I'm hoping you guys can help me with. It has absolutely NO power! It will go, just slowly.

I know I have an injector issue, balance rates are all over the place. I'm thinking #6 is plugged. It starts fine, but has an obvious miss. I deactivated each injector and all but #6 made an obvious difference in the idle quality
Balance rates:

1~-7.0
2~-7.0
3~-4.2
4~-7.0
5~+0.8
6~+15.0
7~-7.0
8~-7.0


Then the actual FRP is around 9,200 psi where the desired is about half that???

I decided to do a compression test to rule out ant serious internal issues and was pleased from what I've read about them. I didn't do #1 because it was a little more difficult to get out and the #5 glow plug was stuck, so it wasn't checked either.

Results:

#1~hard to get to
#2~406
#3~400
#4~401
#5~Stuck glow plug...
#6~400
#7~401
#8~409

The engine is bone stock other than a Kodiak LBZ mouth piece, 4" mandrel exhaust and slight modification of the air filter housing and duct work to get in this truck. I have removed the EGR system (which may be helping the problem), replaced the boost sensor ( I believe, had to be replaced because the white wire pack coming out of the original was detached when I got it) and the glow plug module (? drivers side of turbo), but the glow plugs have stopped working right again. I have used most all of the stock LLY harness, the ECM, TCM, FICM, BCM, cluster, fuel lines and sending unit. I bought this engine about 5 years ago and it has sat for most of that until the last year when it has been started a few times.

It's obvious that I have an injector issue and I am assuming a FPR issue, but will those be enough to make an LLY in an S10 accelerate like it has a Geo Metro engine in it????

 

[04D_MAX]

fpr is bad

 

[DieselS10]

Thanks for replying, I ordered a new FPR tonight. I'll update how it does when I get it in.

 

[THEFERMANATOR]

With those balance rates I would yank the injectors out and send em to EXERGY to have em properly checked out to make sure they are good. And if the ECM detects a major fault, it will limit you to next to nothing for fuel.

 

[RPM Motorsports]

Rescale the MAF for the larger intake?? I've had a 50/50 shot at LLY trucks that need it. The truck feels like its down 150hp until tweeked. But you do have other issues that need addressed.

 

[DieselS10]

With those balance rates I would yank the injectors out and send em to EXERGY to have em properly checked out to make sure they are good. And if the ECM detects a major fault, it will limit you to next to nothing for fuel.

Thanks again, I'll look them up. It must be detecting a major fault cause it feels like the fuel is limited to next to nothing, lol.

Rescale the MAF for the larger intake?? I've had a 50/50 shot at LLY trucks that need it. The truck feels like its down 150hp until tweeked. But you do have other issues that need addressed.

I check into this to, I will be getting EFI Live at some point, just not sure when yet. The intake tubing, MAF sensor and filter are all factory LLY parts. All I've changed was the mouth piece and I had to rebuild the section of the filter housing below the filter to fit into the amount of space that I had to work with. Like this:

Do you think that would be enough different from stock to throw it off?

 

[MarkBroviak]

No sir, that should be just fine! Need to have the injectors tested by a proper facility like Exergy.

 

[bluessmax]

No sir, that should be just fine! Need to have the injectors tested by a proper facility like Exergy.

X2