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

fuel injector question?

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Old Nov 8, 2010 | 05:25 PM
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blackrotary23's Avatar
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snap crackle brap
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From: indianapolis, indiana
Question fuel injector question?

i have a 91 s5 and want to know what the ohms are on the injectors. also, do all of the injectors flow the same or do the primaries have to go in the primary rail and secondaries in the secondary rail? i just replaced all the seals on my injectors, put them in, and now the car runs a little rough and kinda rich at idle. i kept the injectors in pairs, so if there is a difference, then i can just switch them around.

Please, somebody help with this, thanks!
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Old Nov 8, 2010 | 06:45 PM
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Evil Aviator's Avatar
Rotorhead
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From: Charlottesville, Virginia, USA
The injectors are the same. The resistance test is shown in the factory service manual in the section that you should have been using when you performed that maintenance.

Did you install a new intake manifold gasket?
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Old Nov 8, 2010 | 07:50 PM
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snap crackle brap
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yes, i always make sure i seal up the intakes after any type of maintenance. i just cant understand why after i replace the injector seals it starts to do the rough runnability issues. i have an safcII on and adjusted it at hi and lo points to -10 and it runs decent. it should be running fine at -+. it did before the new seals. i also just recently put a 3" exhaust on it from the manifold back. would that have anything to do with it? shouldnt.....
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Old Nov 8, 2010 | 09:01 PM
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snap crackle brap
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i also have the electric omp off the engine with a mechanical omp put on. the electric one is still connected so that it does not go into limp mode. apparently it still likes to go into limp mode intermittently. dont know why though. thought the electric omp was bad so i replaced it and it still does the half-*** running issues intermittently. any ideas?
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