Fuel Injectors

[ZR-1Mike]

Hi all, I'm needing a little advise about what replacement injectors others of you have used and had good experience. I'm replacing my secondary injectors and I remember seeing some posts about good experiences others have had but haven't been able to locate them. Any recommendations would be appreciated!! Thanks!

[BigIke]

Replace the fuel pumps and filter to... Man my car responded well to that!

Sent from my SM-G950U using ZR-1 Net Registry mobile app

[Ccmano]

Unless already done, replace all the injectors not just the secondaries. It will save you form going in there second time. They will go out!
I used 21lb Accels on my last car. The new car already has new ones, they appear to be Ford injectors.

This article should help...
H

http://www.zr1specialist.com/HAT%20W...eplacement.pdf

[Roadster]

When we did the first plenum pull back in January, I replaced all of mine with FIC injectors...I am very satisfied with them.....so you now have some choices to choose from, and we all are satisfied with the ones we chose!!!
And the above advice would be good to follow, although I have not changed out my fuel pumps at this time....but might be a good PM to follow!!!

[XfireZ51]

Originally Posted by Ccmano

Unless already done, replace all the injectors not just the secondaries. It will save you form going in there second time. They will go out!
I used 21lb Accels on my last car. The new car already has new ones, they appear to be Ford injectors.

This article should help...
H

http://www.zr1specialist.com/HAT%20W...eplacement.pdf

Hans,

If these are Fords, one of the params to modify is the Injector Voltage Bias if you will be retuning. You should be able to find that info from Ford.

[Ccmano]

Originally Posted by XfireZ51

Hans,

If these are Fords, one of the params to modify is the Injector Voltage Bias if you will be retuning. You should be able to find that info from Ford.

Not 100% sure, they have orange tops to them. Won't know till I get a closer look.
H

[ZR-1Mike]

Thanks guys, this helps starting me in the right direction. The problem started with a slight hesitation when I'd accelerate then the engine would recover and run great. Last Saturday I took the car out for about a 60 mile run and left it parked for a couple of hours and when I pulled back out on the road I pushed it to WOT with the power key on and I thought the engine was going to drop out of it. No power with an extremely rough output. It ran fine once I got out of WOT but put the power back into it and there it went again. In valet mode it pulled to redline in WOT just fine. I thought it might be flooding out the plugs but I pulled them and they look like they've been starved-burned white like it might be running too lean though the fuel pressure shows a little higher than it's called for. So that's where it's at right now. On with the adventure!!

[DRM500RUBYZR-1]

Might want to first check that the secondary fuel pump is working up to par.
Marty

[Paul Workman]

Originally Posted by DRM500RUBYZR-1

Might want to first check that the secondary fuel pump is working up to par.
Marty

I was going to say that too.

Mike: Couple things to check: Dynamic fuel pressure, and measure the current draw for both pumps (covered in Dynomites "sticky" section.

Pictured: Measuring actual fuel pressure while driving normally and at WOT. (FYI, fuel pressure at WOT should be ~54 or 55± a pound. Current draw should be between 8 to 10 amperes [with ignition switch OFF, and both the primary and secondary fuses installed])

.

[Ccmano]

Originally Posted by Paul Workman

I was going to say that too.

Mike: Couple things to check: Dynamic fuel pressure, and measure the current draw for both pumps (covered in Dynomites "sticky" section.

Pictured: Measuring actual fuel pressure while driving normally and at WOT. (FYI, fuel pressure at WOT should be ~54 or 55± a pound. Current draw should be between 8 to 10 amperes [with ignition switch OFF, and both the primary and secondary fuses installed])

.

I'd bet money, this is the problem.
H