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Rb26Dett / Something Wrong With Idle/fire

drpheel

By drpheel,
in Forced Induction Performance

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drpheel Enthusiast

drpheel

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Hey guys !! Just started my car this weekend after my friday night cruise and the car was Ideling funny. I could actualy hear a small POP sound returning in the plenum. After a few troubleshoot steps I noticed that when I pulled the 6th coil plug or injector plug the car was still ideling the same and still did the pop. all other coils or injector that I disconnect has a direct impact on idle. I have changed all the coil packs one by one, Cleaned my mafs, Checked the plugs and re-gapped them, Changed the Ignitor. I dont thinks its the fuel as the car was running great friday night. When my coil pack change did not work I did a compression test and found all 6 CLY to be 150-155 6th cyl was the best @ 155.

Im kind of out of Ideas here :( Is there a way I can remove the coil of #6 and look if there is actualy a spark ?! All readings in POWER FC look great and I have no TPS probleme it sees IDLE ON and goes off as soon as I play with the throttle a bit. I wish I had a video to show you guys the sound :S

Any help or pointers would be great !!

thanks

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drpheel Enthusiast

drpheel

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They all have a nice brown beige color to them, tho the ceramic on #6 was a bit more black. I have changed them and re-gapped them. Im at the office right now so no acces to pics : (

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drpheel Enthusiast

drpheel

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Do you have stock coil packs? If the spark plugs don't fix it, then I'm sorry to say but you'll have to get a known working set and swap it in.
I tryed stock 26 coil packs working , stock 20 and 25 and I still get the probleme :(

***edit : I have also tryed different wire looms from the Ignitor to the coil packs with different coil packs and still same result

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Cowboy1600 Grand Master

Cowboy1600

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Pull the plug, plug it into the coil pack, sit it on top of the motor with about 1-2mm between the end of the plug and one of the rocker covers, get a mate to start the car for you (turn your turbo timer off first) and see if there's a spark at the plug. You only need the car runnign for 2-3 seconds (no damage will be done when doing this). Perhaps even pull two and compare them. #6 might be sparking but be very weak.

If you have lots of delicious spark, I'd be looking for a fuel problems such as a leaky or blocked injector.

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drpheel Enthusiast

drpheel

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Pull the plug, plug it into the coil pack, sit it on top of the motor with about 1-2mm between the end of the plug and one of the rocker covers, get a mate to start the car for you (turn your turbo timer off first) and see if there's a spark at the plug. You only need the car runnign for 2-3 seconds (no damage will be done when doing this). Perhaps even pull two and compare them. #6 might be sparking but be very weak.

If you have lots of delicious spark, I'd be looking for a fuel problems such as a leaky or blocked injector.

Great ! I had in mind that I could only do that with a standard spark plug wire and distributor ... Il give it a try in the morning :) Tnx for the input

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