I recently got a 91 GT in MO and drove it up to SD. It ran great. 2 days later,6 of the 8 injectors were leaking gas. I got new 19# from Summit and got the old,cracked,mismatched ones replaced. I put it back together and took it for a test drive. It felt like it was mifiring or it was intermittant on 1 cylinder. It didnt feel like full power either. I took it apart 3 more times to check all wiring and replace gaskets on the plenum and throttle body. Now it seems to be worse!!! Is there a way to test injectors without dismantling everything?? What else might it be?? Thanks guys.
injector issues....91 GT
- Thread starter m109ted
- Start date
liljoe07
5 Year Member
Use an ohm meter and test the resistance across the terminals of the injector. Should see 12-16 ohms.
Next use a test light and place it across the injectors electrical plug terminals. Make sure its flashing while the engine is running.
Next use a test light and place it across the injectors electrical plug terminals. Make sure its flashing while the engine is running.
liljoe07
5 Year Member
When using the test light. If you can reach under the manifold, and unplug the injector. Then hook the test light to it to check for injector pulse. Do the passenger side first. You might find something there and not need to worry about the driverside.
If you know how to pull codes, then you could do a cylinder balance test, and that may point you to an injector or cylinder to focus on.
How are the ignition components?
If you know how to pull codes, then you could do a cylinder balance test, and that may point you to an injector or cylinder to focus on.
How are the ignition components?
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