please help me my sr20de can't run.
if I go 25%-100% throttle it will backfire on exhaust and intake but if I let off the gas it will fine. idle is fine and only run with advance timing distributor. if i run normal timing it will mifire on intake and no power and rpm very slow,sound like very retard timing (I set new timing but still crap)
in neutral if I easy on throttle it will rev to 3000rpm and cut, but if I quick throttle it will backfire on intake and no power and engine will die if i dont let off gas
if in gear it will run like crap, can't run. backfire misfire on intake and no power at all
black smoke on exhaust and I check spark plug it very rich (very very rich!!)
I changed
spark plug
coil
distributor
maf (unplug and plug make no differrent)
ecu
check injector ok
check timing ok
check tps voltage (around 4v on idle)
check maf voltage ok
i check ecu code and it tell me
12 13 21
but i check it again today it have only
13 (i unplugged temp sensor and no differrent)
still can't run please help me
sorry for my bad english