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My '87 n/a-to-turbo (86 turbo engine) is not running right. I've looked at everything I can think of besides the injectors. I've now removed my injectors from the manifold to replace all of the injector seals as I noticed some were leaking. I decided to pressurize the rail after I had the injectors pulled from the manifold, and I see that some of them leak gas either out the bottom or out somewhere near the top. The ones that are leaking internally like that I'll probably have rebuilt, as I can have that done for $25 each. But for the ones that aren't leaking internally, is there any way to test them to see if they are spraying correctly? Right now the injectors are still attached to the fuel rail. I thought that if I connected the electrical connector to the injectors one at a time, connected the fpr, and turned the motor over that I would see them spray (into a plastic bottle, not all over my engine, I'm not *quite* that stupid). None of them spray when I do this, so I assume this is not a way you can test this. Does anyone know a way to test them that works and won't cost me too much money? Thanks.
 

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Get them all serviced by a competent injector specialist. Chances are that any injectors not leaking now will not be far behind the ones that are leaking.
The specialist should also make sure that all the injectors flow the same amount in a test done on a special flow test bench, and that the spray patterns are correct after cleaning.

Imprecisely testing them yourself can be done with the aid of a spare CAS/dizzy unit. Plug it into the engine harness, turn the ignition to "ON" and spin the CAS/dizzy unit by hand. This will prompt the ECU to fire the injectors. You should be able to get similar results by cranking the engine on the starter motor.

Just give the specialist all the injectors and rails and be done with it.
 

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Here's what you need to clean your injectors:

-> Injector wiring pigtail
-> Spray carb cleaner
-> jumper wires with alligator clips
-> 9V battery

1 Remove the injectors.

2 Attach injector pigtail.

3 Hook jumper wires to injector pigtail and 9V battery. Polarity doesn't matter. (9V battery raises pintel off seat)

4 Spray carb cleaner through injector until you have a good spray pattern.

5 Wear eye protection and any safety gear deemed appropriate!

6 Repeat with the other 7 injectors.

7 Reinstall.

It's that easy, it's low buck, and you can DIY!
 

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sounds good domdogg123 . But I'm not sure if I would take your advise on that seeing as our cars have six injectors and not eight LOL.J/K . sounds like a pretty good plan to me.



Post Edited (Sep 9, 8:03pm)
 
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