shermanyang

iTrader: (1)

Okay so I've finished with my B20/Vtec today and started her up just fine. However during acceleration only the motor knocks/pings like marbles going down a drain. Cruising or revving the motor under no load it sounds just fine. It's late and I work all week so I won't have time to check things out, so I'm wondering if anyone can give me a slight hint of what might cause this issue? I've done some researching and it's possible that I could have bad gas, bad timing, bad spark plugs/ignition, or it could just be an internal motor issue. I don't think it's a motor/mechanical issue since majority of the time wouldn't the noise be present with or without load?

j_boy32

Could be a bad water pump its rare but defects do happen.

doood

iTrader: (1)

is it tuned?

curtis_k

what grade gas you running consider that

1998GsRIntegra

Sounds like detonation. x2 on doood's post.

el crapitan

if this is spark knock, check your ignition timing.