i just swaped a 90 ls engine in my 91 civic hatch and im not getting no fire what could it be i checked everything i can think of

 

more info please. what model civic, what have you checked, any CEL's?

 

91 civic hatch dx

 

Did you convert to mpfi? Did you run wires for the distributor? Did you convert your stock harness or did you use the LS harness?

Need to know exactly what you did?

 

i put the ls ecu in and ran black and yellow wires from harness to distributor i got it to turn over but no spark and whats the mpfi and convert the stock harness how im not really sure about this year civic im used to 92 and up swaps

 

Wow, you've got a mess on your hands. You put a MPFI engine in a DPFI car and don't know what it is?

DPFI = 2 injectors, MPFI = 4 injectors. You need to convert your stock harness to accept the extra injectors, an injector resistor box and for the different distributor.

You should seriously read up on MPFI swaps in the FAQ and start over if you only "ran wires to the distributor". Why would you not do your research first before working on a car you're not familiar with? Yeesh.

 

ok i got the box i put the hole harness from the integra

 

That was your first mistake. Use the stock harness and convert it to MPFI. If you don't know how, read the link(s) in the FAQ.

 

yeah you can't just use an integra harness. you have to convert your stock engine and chassis harness to accept the mpfi motor. i can't believe i'm saying this because im a firm believer in learning how to do your own work but i would say your best bet is to get a hold of rywire.com and send them your stock harness and have them build you one. it seems like you got in way over your head. you need to look in the FAQ's and read as much as you can on doing a dpfi to mpfi swap. use google, yahoo, or the search feature on this forum and get all the info you can before starting on this again.