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99 5sfe stuck injector, lots of white smoke.

R31

By R31
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R31 Enthusiast

R31

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#2 is ****** fuel into the cylinder while #3 has a weak pulse and they share the same coil pack. I replaced both packs anyway and tried another ecu but nothing. Also noticed fuel dripping from exhaust flange near the motor since this all started today, would this make it run like **** aswell? Any ideas before I suck it up and take it to the auto elec?
trentmeyer23 Grand Master

trentmeyer23

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Tapping the injectors may unstick them. I don't think an auto elec will be much help to you. You may need to try and get the injectors cleaned or a replacement/reconditioned set.

R31 Enthusiast

R31

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Ended up finding the injector wiring had split and shorted from rubbing behind the manifold somehow, eventually killing the injector. Ever heard of that happening on this series Trent?


  • 2 weeks later...
Jim. Proficient

Jim.

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"Ended up finding the injector wiring had split and shorted from rubbing behind the manifold somehow, eventually killing the injector. Ever heard of that happening on this series Trent?"

I am curious about this as I would have expected that a shorted wire (most likely unsupported as Trent asked) would have damaged the output stages of the ECU and not the injector.

After all, the injector is just a coil driven device activated by an impulse from the ECU output, is it not? A short circuit across a coil does nothing adverse.

  • 4 weeks later...
R31 Enthusiast

R31

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On 13/12/2015 at 8:30 AM, Jim. said:
On 30/11/2015 at 5:53 PM, R31 said:

"Ended up finding the injector wiring had split and shorted from rubbing behind the manifold somehow, eventually killing the injector. Ever heard of that happening on this series Trent?"

I am curious about this as I would have expected that a shorted wire (most likely unsupported as Trent asked) would have damaged the output stages of the ECU and not the injector.

After all, the injector is just a coil driven device activated by an impulse from the ECU output, is it not? A short circuit across a coil does nothing adverse.

You're 100% right, the injector was fine once the wiring was fixed. The auto elec insisted it was stuffed for some reason.

trentmeyer23 Grand Master

trentmeyer23

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Sounds like the auto electrician may have fed you some suspect information initially.

R31 Enthusiast

R31

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Sounds like he was too stoned as he forgot to plug the injector back in he fixed aswell. Had fun limping up the road home.

Jim. Proficient

Jim.

Posted
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It is good to read that this mystery has been clarified. I've been waiting for a reply about it.

 

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