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Resistance on Fuel Injectors

J

JATTA

Active Member
What should the resistance be on 28 lb injectors?? Trying to see if my injectors are bad, as I am having a no start issue.
 
Resistance seems a bit low. They all read from 11.4 to 12.4 which doesn't sound entirely right to 28 lb injectors


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Well the vehicle hasn't run for about three years. Fixed a couple of things but now it will only start if I put starting fluid in the throttle body, as soon as the fuel runs out it dies. It thinking it's the injectors that are shot.


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My apologies, fuel pump has been changed, fuel filter, new gas, as well as the starter and alternator


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Oil pressure switch and FP relay. without oil pressure, it won't let the FP relay kick the FP on to send fuel to injectors. Does FP buzz for2 seconds when you turn the key to on?
You may have a bad FP also if no 2 sec buzz

edit: seen replaced FP
 
Last edited:
Yeah fuel pump buzzes, I've had issues with fuel pumps before with an 87 iroc and the fuel pump is good. It engages and buzzes as it should


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Are the injs the ones that were in it for several years? If so they could be gummed up and stuck shut.
Have them cleaned or install new.
 
You have to take them to a shop with a inj cleaner.

But 1st, make sure the injs are not spraying. That can be done at home.
 
BOBTTA#464 said:
Oil pressure switch and FP relay. without oil pressure, it won't let the FP relay kick the FP on to send fuel to injectors. Does FP buzz for2 seconds when you turn the key to on?
You may have a bad FP also if no 2 sec buzz

edit: seen replaced FP
Click to expand...

I thought the op switch was a just a backup to run the pump if the relay was bad? Thatsbthe way I interpret what Jan described here problem whit fuel pump always on key off ? need help or schematic - Turbo Trans Am Forum
 
TeeTopZ said:
I thought the op switch was a just a backup to run the pump if the relay was bad? Thatsbthe way I interpret what Jan described here problem whit fuel pump always on key off ? need help or schematic - Turbo Trans Am Forum
Click to expand...

I understand that TeeTopZ, but.....If the fuel pump relay works, there will be pressure at the rail. That doesn't mean the cars gonna start. It still has to go thru the oil pressure switch is how I believe it's apoda work. I could be wrong again. Now I'm doubting myself.....
 
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