Bad inj??
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Joined: Jun 2014
Posts: 393
Likes: 2
From: Montana
Car: 1986 Trans AM WS6
Engine: 383 Vortec TPI, PUTS SMILES ON FACE
Transmission: PATC LVL 3 Raptor Transmission
Axle/Gears: 3.27 POSI 9 BOLT
Bad inj??
1986 trans am LB9
already how's it going guys I have a problem running very very very rough wanting to die everything checks out good I checked out the ignition, replace the wires, replace the cap and rotor and the coil, no vacuum leaks, fuel pressure good,
but I did test the fuel injectors and I will write them down but I am not real sure what I am looking at I need to know rather I have a bad injector or injectors...
I ohms my injectors here is what they turned out to be
Cyl
1... 16.7
2... 17
3... 16.8
4... 16.7
5... 16.6
6... 16.8
7... 16.8
8... 16.7
Are these OK??
I read somewhere that they should be
16.0 +/- .5
already how's it going guys I have a problem running very very very rough wanting to die everything checks out good I checked out the ignition, replace the wires, replace the cap and rotor and the coil, no vacuum leaks, fuel pressure good,
but I did test the fuel injectors and I will write them down but I am not real sure what I am looking at I need to know rather I have a bad injector or injectors...
I ohms my injectors here is what they turned out to be
Cyl
1... 16.7
2... 17
3... 16.8
4... 16.7
5... 16.6
6... 16.8
7... 16.8
8... 16.7
Are these OK??
I read somewhere that they should be
16.0 +/- .5
Last edited by happyhapka; Jun 14, 2015 at 10:40 PM.
Joined: Nov 2008
Posts: 2,097
Likes: 177
From: Milwaukee
Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: Bad inj??
That's not really high ohms for stock. I'd worry more if one was really low, the coating on the injector coils get eaten away for ethanol and the resistance will read low. That doesn't mean they aren't clogged or leaking. If they're factory original it may help to change them anyway.
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Joined: Nov 2008
Posts: 1,529
Likes: 50
From: Rockville Centre, NY
Re: Bad inj??
1986 trans am LB9
already how's it going guys I have a problem running very very very rough wanting to die everything checks out good I checked out the ignition, replace the wires, replace the cap and rotor and the coil, no vacuum leaks, fuel pressure good,
but I did test the fuel injectors and I will write them down but I am not real sure what I am looking at I need to know rather I have a bad injector or injectors...
I ohms my injectors here is what they turned out to be
Cyl
1... 16.7
2... 17
3... 16.8
4... 16.7
5... 16.6
6... 16.8
7... 16.8
8... 16.7
Are these OK??
I read somewhere that they should be
16.0 +/- .5
already how's it going guys I have a problem running very very very rough wanting to die everything checks out good I checked out the ignition, replace the wires, replace the cap and rotor and the coil, no vacuum leaks, fuel pressure good,
but I did test the fuel injectors and I will write them down but I am not real sure what I am looking at I need to know rather I have a bad injector or injectors...
I ohms my injectors here is what they turned out to be
Cyl
1... 16.7
2... 17
3... 16.8
4... 16.7
5... 16.6
6... 16.8
7... 16.8
8... 16.7
Are these OK??
I read somewhere that they should be
16.0 +/- .5
They are actually ok. Did you test them both hot and cold? If you have a noid light you can check to see if they are all pulsing.
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