ok i just finish a dohc zc swap on my 90 civic hb... i think i got everything wire up right but when i start the car the motor runs about 3 seconds and then it turns off also when i press the gas pedal it shuts off right away!! it seems like i m not getting gas at all... i dont know help

 

90 DX Hatchback? was this a MPFI swap as well?

What's happening is, you're getting fuel in the chamber, but not much. Distributor's igniting the vapors.
But when you open throttle it's cutting fuel. This could be because the TPS is going bad or is clogged.

If you don't swap the TPS wires around when you go DPFI to MPFI, this is the result, it thinks you're at 100% throttle when you're at 0% and floods the chamber with fuel causing a little backfiring too.

 

could be a bad tps or timing?

 

u make sure the cyl. postion sensor is wired right?

 

it came per wired! btw where is the cyl. postions sensor?

 

On the end of the exh cam

 

yes i m going to check that out! those 2 wires goes into the dizzy right

 

ok right now i have a code 5 and 9!!!! WTF