twisted88

I have recently installed a new motor in my 88lx.. It started and ran great for a few then died. It would crank over and not start. i let it cool off and it started. after a few days of wraping things up I was ready to move the car and try a test drive. I moved to my driveway and now the car cranks and wont start.. I checked for spark and its good. i got fuel. timing has been checked and its ok. I noticed the fuel pump doesnt prime like it used to. It comes on and stays on whit engine off in run position? How do i check for injector pulse? and any other ideas would be great.
Thanks

mjr46

you need a noid light or a small wattage bulb to check for inj pulse.... is the distributor installed correctly??

twisted88

yea dist is in good i rechecked.. how would i go about using a bulb to check injectors? and is it possible for fuel to just be running back to tank?

NoGo95GT

Although you are an 88 are you currently hooked up to MAF(mass air flow) versus speed density?

twisted88

Yes its maf.. All CA emmisions too if that helps.. when cranking sounds like oldschool carb car out of gas.. I have full tank. Was just out looking at it and all elect connections are clean and made,. Grounds are good too.. So where to next in a fuel injection idiot.. Give me an oldschool carb and im good lol

NoGo95GT

Check to make sure that your MAF is plugged in tightly. It's a mistake that I made and took me 3 weeks to figure the problem out. Good luck!

kennebellgt

did you make sure that the wire coming off the injector harness is grounded it is between the upper back manifold and the firewall, it comes right off the injector harness where it plugs in to your main harness. I think its an orange wire.

twisted88

i think it is.. ill double check that.. the car ran for a little bit right after instaling the motor last weekend. i think it ran about 30 min.
it there a bypass for the fuel to be just returning to the tank? got a new fuel regulator cause the old one was leaking into vac hose..
thanks for all the help

twisted88

ok update.. i got the car running. i sprayed tbody cleaner in and it fired. it now idles hi and if i hit throttle it pops thru intake.. i checked firing order and its good.. i cant get any codes from ecm. check engine light stays on. is this a sign that the ecm might be failing. ive looked at everything i can think of and no luck
thanks

NotchAbove

Pops thru intake, sounds like your distributor was not put back in right. You could be out 180*. Worth checking.