- Oct 9, 1999
- 25,162
- 1
- 81
hello,
i'm having some detonation issues in my civic. i can't get it to go away. it happens mostly at part-throttle when the engine is warmed up. i put some NGK g-power spark plugs in, ran them for 7000 km and took them out (i now have stock ngk in there) and they look PERFECT. i don't get it.
ok so anyway i've been told that this car has no EGR.. and no knock sensor.. to me this sounds like a pretty stupid setup as the EGR would allow cooling of the combustion and the knock sensor to retard the timing. i've checked the timing and it's right on. also changed fuel filter, air filter and added some fuel system cleaner crap to the gas tank a few times.
the one thing that i will say is that there's a small crack in the radiator at the top where the air intake is bolted on... i've tried to contain it using JB-WELD but it always manages to seep though. since it's at the top it will only make the water level go down to a certain level until it will stop leaking (until the maximum pressure level is right below the crack). the temperature needle always is in the lower half of the gauge (it always points at the bottom of the green square around "D4"). the engine light is not on and there's no codes.
help meeeee
it's a 1991 DX 4-speed auto, dual point injection btw.
i'm having some detonation issues in my civic. i can't get it to go away. it happens mostly at part-throttle when the engine is warmed up. i put some NGK g-power spark plugs in, ran them for 7000 km and took them out (i now have stock ngk in there) and they look PERFECT. i don't get it.
ok so anyway i've been told that this car has no EGR.. and no knock sensor.. to me this sounds like a pretty stupid setup as the EGR would allow cooling of the combustion and the knock sensor to retard the timing. i've checked the timing and it's right on. also changed fuel filter, air filter and added some fuel system cleaner crap to the gas tank a few times.
the one thing that i will say is that there's a small crack in the radiator at the top where the air intake is bolted on... i've tried to contain it using JB-WELD but it always manages to seep though. since it's at the top it will only make the water level go down to a certain level until it will stop leaking (until the maximum pressure level is right below the crack). the temperature needle always is in the lower half of the gauge (it always points at the bottom of the green square around "D4"). the engine light is not on and there's no codes.
help meeeee
it's a 1991 DX 4-speed auto, dual point injection btw.