2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

injectors

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Old Jan 9, 2011 | 07:30 PM
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fcrotory's Avatar
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Magic man
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From: grants pass,oregon
injectors

I unplugged my secondary injectors to see if it would run different and it doesn't. Why wouldn't my secondarys work?
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Old Jan 9, 2011 | 07:38 PM
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From: tulsa,ok.
Secondary injectors require load for them to fire.
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Old Jan 9, 2011 | 07:41 PM
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Magic man
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Ok, why does it run the same when there plugged in? Car won't rev fast. I can rev all the way if I slowly open Tb.
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Old Jan 9, 2011 | 07:48 PM
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Originally Posted by fcrotory
Ok, why does it run the same when there plugged in? Car won't rev fast. I can rev all the way if I slowly open Tb.
If the engine is not under load then they aren't working whether they are plugged in or not. Unless the TPS is disconnected and the Boost/Pressure sensor vacuum hose is disconnected and plugged the secondary injectors won't fire from just reving the engine while in the driveway as an example.
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Old Jan 9, 2011 | 08:34 PM
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O ok. Any idea why I'm getting fuel cut when I rev fast. It will rev to redline if I rev slow, but if I stab it it won't go past 4k and backfires.
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Old Jan 9, 2011 | 09:00 PM
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Check the operation of 5/6 ports. If they don't work you will want to remove them and clean them up as they may have massive carbon buildup that could blow your engine if it finds its way into the combustion chamber.
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Old Jan 9, 2011 | 09:05 PM
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From: grants pass,oregon
They r removed. A block off plate was put on.
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Old Jan 10, 2011 | 12:05 PM
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Then your next test is to see if your injectors really are firing. You will need a load on the engine to get them to fire and then someway to observe them.
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