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Vn Keeps jerking at 3500rpms

modcon

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Well I have just replaced my harmanic balancer because my other one was stuffed. Now my vn is running smooth up until I hit about 3500rpm then it jerks and feels like it is surging, yet at low revs it is sweet. Does anyone have an opinion on this
 

Boonz

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did you reset the clearance between the balancer and the crank angle sensor??? might not be able to pick up a signal at the higher revs
 

modcon

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Well I altered my CAS today and now car is running mint, no longer missing at high revs, in fact I put my put down today and the car went fully sideways, not a bad problem to have!!! gave a EVO 1 a race of the lights and beat him by 3 car lengths over about 150 meters - pretty happy
 

hangvn

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i have the same problem mine jerkys so cleean it ?
 

pjdm1980

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Now that's a mega dig!
 
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