first off sorry if this is int the wrong place or anything. im new on here.

i just did a motor swap. i had a ls vtec that ran fine, decided to finally do my build. had my engine built. dropped it in and it wont start. its getting fuel and spark, has compression, checked fuses and relays, firing order is correct and timming is dead on. and i just checked all my grounds and connections. everything is good. not throwing any codes yet.


it cranks but wont start, my friend sugested my ecu... sure enough it had a burn mark. so i put in a known working p30 and now nothing happens? key just turns over and lights come on. thats it..

if anbody can help he that would be great.

 

Idk what to say!wierd!u sure it's getting fuel do u hear it prime when u turn the key in on position?

 

yes, and i know im getting fuel because i have a very slow leak from the fuel rail... i had the starter and the coil checked. im confused about the whole situation with the ecu..

 

U tried with a workin ecu so ecu is not the prob.it's probably not getting enough fuel pressure due to the leak.fix the leak and give it a try

 

ok, ill do that tonight, but its still does absoluty nothing, it dosnt crank at all now. and all i did was change the ecu. but that ecu works in my buddies car.

 

what year car and what harness are you using? just curious also have you checked make sure you have the correct washer at the fuel rail NUT on the fuel line comming in to the rail? You can remove you fuel return line and turn the key you should gush fuel out.

 

its a 93 dx hatch with a obd1 ls harness converted for vtec. same harness i used on my ls vtec. and yes its the correct washer its just needs teflon tape.

 

anybody have any other ideas? ill try anythin lol