Hi guys I own a 04 rsx type s, with 178,000. I have CAI, test pipe, catback exhaust, skunk 2 ivtec, hondata intake manifold gasket which is the blue gasket and reflash with the 8.1k rev limiter. One day I am driving home from work and I feel that whenever I try to hold a certain speed I feel the car jumpy, so I pulled over to inspect the motor (keep in mind I have no CEL) no visible issues. Then I drive the car when I start in 1st I heard a slight knocking noise and the hard has issues to accelerate around 1.6k rpms. Its not a constant knocking. I have swapped ECU, most of the sensors.
Knock sensor
VTC valve
Camshaft position sensors
MAP sensor
IAT
I cleaned the IACV just to get it out of the way
Only 93 octane
Checked injectors, spark plugs, coils and those are good as well
So in my thinking I think I bent a valve so I swap the motor and the same issue persist. The noise comes from the passenger side I would have to say from around cylinder one. But I have noticed that from a cold start 80 degree weather the acceleration is fine under load or idling. as soon as it gets to operating temperatures it will hesitate around 1.6k
Knock sensor
VTC valve
Camshaft position sensors
MAP sensor
IAT
I cleaned the IACV just to get it out of the way
Only 93 octane
Checked injectors, spark plugs, coils and those are good as well
So in my thinking I think I bent a valve so I swap the motor and the same issue persist. The noise comes from the passenger side I would have to say from around cylinder one. But I have noticed that from a cold start 80 degree weather the acceleration is fine under load or idling. as soon as it gets to operating temperatures it will hesitate around 1.6k
acceleation/laggy
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