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more ko4 problems (inside)

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Old 11-16-2003, 04:25 PM
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Default more ko4 problems (inside)

I've been having some surging issues with the k04... mostly fluctuating (sp?) boost when accellerating from lower rpms. I updated my MAF and it solved that problem but I now have more problems. Sometimes around 2,500-3,500 rpms the car is bucking. Seems to hesitate like there is no power and the car actually jerks. Needless to say, it is pretty annoying.
Could it be a vac line? Or the air filter (which is in dire need of replacement)? Any help would be great. Thanks
Old 11-16-2003, 04:26 PM
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It could be the BPV.
Old 11-16-2003, 04:27 PM
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Default I'm running a Turbo XS bpv w/ one washer

just re-greased 2 months ago
Old 11-16-2003, 04:39 PM
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What plugs at what gap? And how many miles on them?
Old 11-16-2003, 04:46 PM
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Default NGK's one heat range cooler than stock (forgot part number)

about 1k miles on them
Old 11-16-2003, 05:42 PM
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any dtc's?
Old 11-16-2003, 05:49 PM
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Default haven't vag'd it yet

I have to get a usb adapter to use my old vag com w/ my present laptop
Old 11-16-2003, 05:52 PM
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Default Sounds like it is missing at WOT as max load hits.

You could try gapping around .029-.031" if they are gapped wider than that. The plug might be a bit too cold to self clean. I'd pull them and see how they look.
Old 11-16-2003, 06:02 PM
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Default the only thing is it happens mostly at half throttle

I can be accelerating or decellerating slowly and all of a sudden the car violently bucks.
Old 11-16-2003, 06:05 PM
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Have you try cleaning the throttle body?


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