Jerking in Low Throttle

[otismummum]

Dear All Sifu Sifu,

Hope you guys can help me with this problem.

I'm using Toyota 20V Silvertop manual transmission. I have this problem since the 1st day when my car is out from the garage after chaging the Engine.

Some plp said is the Air flow mask. Change it still the same. Some said , throttle body dirty. Serviced it already still the same. Some said ECU, changed it but still the same. I really pening liaw. Send it for Dyno tune for S-ITC & S-AFC, power damn good but still jerking during low throttle.

Anyone can help me plzzzzz.

 

[kyheng]

Is it injection system or not? maybe the air filter blocked?

 

[m a v [3] r i c k]

have you checked your spark plugs and cables?

 

[TitanRev]

bro, send ur fuel injectors for pressure test. It could be injector problem.
cause u have service the TB
change the ECU,
change the AF meter,

you have already narrow down the problem root. could be ur fuel delivery system problem. also check ur fuel pump, fuel filter.

 

[otismummum]

Dear Titan,

Thank Bro, That is news to me! How can I missed the injector. Thanks alot.By the way, what is that engine ur having? Damn cool man. Mine also have the Thrumpet but cover up liaw.

U know where can service the injector ar?? I heard Sunway they have but dunno where.

 

[TitanRev]

Try N1 racing. If not mistaken they got a machine to clean injectors.
that's a 206 engine running on 4 throttle.