Hey guys i just picked up a 94 civic with a b17 swap in it. I heard some knocking when i bought it and thought it needed a valve adjustment. After getting a valve adjusment done to it i can still hear the knocking sound. I can hear it when i rev it while in neutral and when im driving the car. I'm stomp because there is no oil leak what so ever that i can see. 180 compression all 4 cylinder, no power loss, no over heat (drove it for 2 hrs home), no check engine light, healthy idle, no signs of oil pressure loss (oil level is fine), doesn't smoke (even when vtec crosses over). Im afraid its a spung bearing or an early stage of it but when i listen to the motor when its running i can't really tell where its coming from. The only thing that comes to mind is the fuel injectors. When i listen very carefully it seems like its coming from the injectors closing and opening but i doubt it they would make that much noise at 5k rpm. You can tell its not normal for something to be knocking/ticking that loud. I can hear it best when im inside the car reving it, or driving it. When its just idling i can't hear it. Anyone with a tip, or an idea on whats going on?

Just in case mods i/e/h

T.I.A


Modified by blu3g at 6:07 PM 11/13/2008


Modified by blu3g at 6:08 PM 11/13/2008

 

Id say its deff in the bottom, the bearings

 

im sayin stretched rod!!!

 

ok here's the update, it sounds more like vavles ticking then anything else. Also when vtec engages that ticking goes away... could it be the lma? I'm stomp someone plz help me

 

If the sound changes in intensity with engine load (ie. gets louder when you step on the gas or let the engine decel) it's most likely in the bottom-end, if not then its probably in the valvetrain.