bwick240

ok after fixing some more wiring we have the car sputtering a little bit....but it sounds like i can hear some air popping by the intake filter. any guesses?

the ecu that we are using is just a stock rb25 5spd ecu. the ecu is also getting 12v to the power ports on the plug. and the fuel pump is also getting power now because it primes right before the car starts. when i reversed the fuel lines after trying to start it a couple times with them backwards, i did have fuel pressure built up in one of the hoses. so i know im getting fuel to the rail. i havent checked spark yet but that will be done tomorrow or the following day when i get the time. I'll check the ign power with a meter and the CAS. thanks for the help, ill keep you posted.

we checked the fuel lines and they were wrong... hah my bad. we have the ecu power and ground skipping the relay and going to direct power and direct ground. were getting 12v at the ecu with a meter so we know its getting power. after trying to start it with the fuel lines going the correct way is still does the same thing, cranks, sounds good, but doesnt spudder or hicup or anything. just keeps cranking and thats about it. I guess the next thing would be to check spark... how much is the ignition tied into the coilpacks? Were about to go over the ignition wires again to bring them to a solid connection instead of trying to go through plugs and relays. Thanks for the response, so far so good!

Hey guys I've just about finished an rb25 swap in my friends s13 and now were stuck on something. The motor will crank/turn-over, but it wont start. It sounds like it has great compression but just isnt getting the vitals. I'm not sure if the ecu has power, which would explain everything, but I also dont hear the fuel pump even priming. There is a small blue plug on the lower harness that we could not match up to its pair, nor figure out what it is. I will go over all of the grounds again just to make sure but I'm almost positive that those are correct. Any help is appreciated, thanks guys, I've already used a ton of info from this site and it has been extremely useful.