engine dont have powr at 4000 rpm

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04-08-05, 03:03 PM

tidanb0utch

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engine dont have powr at 4000 rpm

need help for this.
my engine lack powr at 4000 rpm
, run well 1 to 4 rpm
my engine dont have this problem before

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04-08-05, 04:14 PM

BUMBLEBEE7

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carb or FI

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04-08-05, 05:43 PM

tidanb0utch

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ok. thx
s4 na
fresh injector rebuilt
not easy to déterminate what is wrong when u arent beside the car but
any help and thing to check, will be apreciate

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04-08-05, 06:06 PM

darkphantom

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maybe the solenoid, make sure all the wires for the spark plugs and everything is plugged in.

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04-09-05, 01:57 PM

Zenki FC

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check your coils and all grounds. good luck!

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04-09-05, 04:57 PM

Syonyk

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If the car hits a "brick wall" at 4000 RPM (3800 RPM to be specific), it means the secondary injectors are not firing. At 3800 RPM, the ECU switches from ~80% duty cycle on the primaries to ~40% on the primaries & ~40% on the secondaries. If the secondary injectors aren't coming online, the engine will not rev past 3800 RPM.

-=Russ=-