injector clips - Third Generation F-Body Message Boards

t5camaro · 08-10-2007, 12:43 AM

well i posted a thread of a popping sound in my mufflers. And I know this might sound stupid but do the order of the injector clips matter? I mean what happens if you cross them left clip on right injector, and right clip on left injector? Will this cause that popping sound. And if it does matter, are they marked or something?, cause I did a TBI to TPI swap and in the process removed all the old wire loom that was no good anyway and cant tell witch goes on witch. Any help Please

t5camaro · 08-10-2007, 01:27 AM

ANYBODY? help me I hate that noise

chevy boi · 08-10-2007, 01:41 AM

it shouldnt matter from what i rember TPI is a batchfire system and the injectors fire all at the same time.

the poping sound out the mufflers is probly a sign that you are running a tad on the rich side

t5camaro · 08-10-2007, 01:55 AM

how would I fix that? my exhaust doesnt smell bad and there is no black smoke. Are there any other symptoms? Or can it run rich without smoke and strong odor?

Viprklr · 08-10-2007, 08:34 AM

There are also lean pops. I had some of those last week.

TPI is batchfire. You don't need to worry about which plug goes on which injector. Impossible to mess up with the factory harnesses.

t5camaro · 08-10-2007, 12:43 PM

Thanks man, so it doesnt matter huh? thats cool, now I just got to figure out why it is popping. Do you have any suggestions? Timing? fuel pressure? something?

Burnout91 · 08-10-2007, 07:24 PM

I thought "batch fire" meant that 1 bank of injectors, right or left, all fired at the same time. I think the connectors for each bank have a different color-code on the two wires. I don't think you can cross the connectors right to left and have the engine running correctly.
Bill

t5camaro · 08-10-2007, 07:25 PM

Do you have more info on that? really interested

Burnout91 · 08-10-2007, 07:49 PM

OK, I just looked. On my '91 L98 each injector (connector) on the right side has one GREEN and one pink/black stripe wire. Left side has BLUE and pink/black stripe. Factory original.
Bill

t5camaro · 08-10-2007, 07:52 PM

right and left, you mean from outside car or inside car?

Burnout91 · 08-10-2007, 08:19 PM

That color-coding also checks-out with the factory Chevrolet Service Manual. Left = drivers side, Right = passenger side.
Bill

madmax · 08-10-2007, 08:19 PM

Yes there's different wires to each side, and no it doesnt make any difference whatsoever where you hook them up.

t5camaro · 08-10-2007, 08:30 PM

my injectors are reading 18.5 ohms. is that bad?

blackbird615 · 08-11-2007, 12:38 AM

nope, they should be anywhere between 14-17 ohms of resistance. 18 is fine.

however, your injectors could be bad and still read the right amount of ohms. an ohm test only reads the electrical resistance in the injector. it doesn't read whether or not the injector is clogged or spraying evenly.

t5camaro · 08-11-2007, 03:12 PM

so how do i find out if they are leaking, clogged, or spraying wrong?

blackbird615 · 08-11-2007, 04:52 PM

you could send them to get flow tested. i can't remember the name of the one popular injector guy on here you could send them to, but can anyone else chime in?

Viprklr · 08-12-2007, 08:39 AM

A fuel pressure test will tell you if they're leaking.

I think the guy's name is Rich at Cruizin Performance that does injector cleaning and flow matching.