Stumbling on high rpm acceleration

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Aug 24, 2011 | 09:00 PM

Hazard15301

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From: Washington, PA

Stumbling on high rpm acceleration

Hey guys. I have an S4 with an S5 engine and S4 accessories/intake. The problem is that when I accelerate (say taking it from 1k to redline) the engine stumbles and bucks from 4k-up. It's not constant, and sometimes its worse, sometimes not so bad.

I checked thoroughly for vacuum leaks, and adjusted the TPS. Any other suggestions?

Aug 24, 2011 | 09:35 PM

SpikeDerailed

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From: Charlotte, NC - USA

3800rpm stumble.

Aug 24, 2011 | 09:51 PM

SpikeDerailed

This sh*t burns oil!

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https://www.rx7club.com/showpost.php...55&postcount=5

6th down.

Aug 24, 2011 | 10:15 PM

hashman626

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From: Gig Harbor, WA

probably not the problem but pull out the plugs and take a look at them, wouldn't hurt and very easy with the clock in mind

Aug 25, 2011 | 04:10 AM

Hazard15301

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Rotor Junkie

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From: Washington, PA

Quote:

Originally Posted by SpikeDerailed

3800rpm stumble.

No no no...

Let's say I have the gas to the floor. It will stumble at 4200, 4800, 5500, 6000, etc all the way to redline. I'll have to get a video maybe. It's not that.

Stay tuned, I'll try to show you guys what I'm talking about a little better.