High Knock 4000rpm hesitation
#1
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High Knock 4000rpm hesitation
Hi Guys,
Eversince the rebuild i have been having high Knock readings... Knock readings have been high.. when i boost i get knock of 150+ all the time... i can't say if it knocks under boost or underdeceleration...
OK this is accompanied by 4000 rpm heistation... the car does not want to rev past 4000rpms... after the rebuild at first i thought that my twins might be shot so i switched to a single and still now luck?
What could the problem be ?
Following are the mods
Streetported engine
HKS T04E turbo kit
Apex-i GT Spec Radiator
Apex-i N1 Exhaust
Apex-i Power FC
Greddy E-01 Boost controller
Greddy SMIC
Mid pipe
Aquamist 1s system
Can it be the water sensor or Secondary injectors?? I have already ordered 1600cc Secondary injectors, Fuel Pump and secondary fuel rail...
Also where can i locate the Water temp sensor?
What do i do.... Very very confused...
Eversince the rebuild i have been having high Knock readings... Knock readings have been high.. when i boost i get knock of 150+ all the time... i can't say if it knocks under boost or underdeceleration...
OK this is accompanied by 4000 rpm heistation... the car does not want to rev past 4000rpms... after the rebuild at first i thought that my twins might be shot so i switched to a single and still now luck?
What could the problem be ?
Following are the mods
Streetported engine
HKS T04E turbo kit
Apex-i GT Spec Radiator
Apex-i N1 Exhaust
Apex-i Power FC
Greddy E-01 Boost controller
Greddy SMIC
Mid pipe
Aquamist 1s system
Can it be the water sensor or Secondary injectors?? I have already ordered 1600cc Secondary injectors, Fuel Pump and secondary fuel rail...
Also where can i locate the Water temp sensor?
What do i do.... Very very confused...
#2
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I would definitly check the secondarys to make sure that they are working properly and not sealed closed. Also check to make sure your power fc is not set on a rev limiter of 4k as most people do that to avoid boosting on a new rebuilt engine. But definitly check the PFC make sure the rev limiter is not set at 4k and also check taht your secondarys are opening and closing correctly.
#3
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When for 2 days the car became OK the power fc shoed a max of 96% Injector duty.. else i do not see over 70% even with the hestitation... can that mean that the secondaries are the problem?
#4
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I had that same problem before. I didn't find out what it was until after the motor blew. The o-ring rubber gaskets that the fuel injectors sit on were torn, and the fuel was blocked and wasn't atomizing right. Thats what blew my motor. I would check you fuel injectors out before doing anything else.
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