Ka24de jerking at 3500rpm

[nicks13vert]

Hi I have a ka24de that has started jerking at around 3500rpms and one day it wouldn't start so I replaced the fuel pump and it starts fine but when I'm driving it the acceleration is really slow and it jerks the whole car


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[cotbu]

Pull codes, might be mafs,timing or even fuel. If its fuel related try changing the octane first. Then verify timing.

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[nicks13vert]

I did and it said it was 34 which is the knock sensor


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[nicks13vert]

I don't know if it's misfiring or if the sensors bad


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[cotbu]

Well try clearing codes, check the wiring then sensor if it persist after you replace the sensor verify timing then use higher octane.

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[nicks13vert]

I recently bought a walbro 255 and I've been running only 93


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[nicks13vert]

And do you think that the sensor could be causing this problem?


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[SoundEfx]

When last have you changed the fuel filter?

[nicks13vert]

No clue. But it's pretty rusty I was thinking about replacing it with a z32 one


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[SoundEfx]

The car I have doesn't have the issue you're having, but I am in the process of replacing all of the rusty, vital parts that are on it.
You have to remember that this car is around 20 years old. Even if it was perfectly maintained, there are certain parts that would need replacing.

[nicks13vert]

Yep alright. I'll probably replace it and I'll get new spark plugs while I'm at it. And if I swap it with the z32 one would it make a difference?


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[cotbu]

If your filter in the engine bay is dirty or clogged, replace it with a new one z32 or oem whatever is cheapest i guess there is no benefit other than the price of the z32 filter. Now, if that filter is dirty? Then changing the pump sock filter should be in the plan as well.

The knock sensor code 34 will cause timing to be pulled and offer a bucking throttle response, you can mask the problem by controlling the throttle, not recommended.;)

[nicks13vert]

Thanks man


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