bmxbassrx7

i have an 87 se 5 speed i have recently replaced the engine. i have had the engine in for 2 weeks now and all the car has done is sit. it gets spark and the fuelrails have tons of pressure, i have replaced all injectors from a running car that had one bad rotor(i know they are good) new fuel was added to car. it seeme that the injectors are not getting the ground signal from the computer although the computer has also ben replaced, from same car as injectors. if you have any info please help

rotarydelight

maybe swap in another computer
i had this same problem, it cranked and got spark. but the injectors got no signal

HAILERS

The ECU grounds can be checked with a digial meter with the key OFF and the ECU plugs off. Look for under one ohm.

Got a spare CAS? Good. Pull the small white plug off the Lead coil and the trail coil assy so they won't fire. Pull the electrical plug off the cas and install it on your SPARE cas.

Key to ON. Spin the SPARE cas. You should be able to hear the injectors clicking.

To confirm the injectors being the problem, do this: buy a can of starter fluid. Spray into the air intake for one to two seconds. No more required. Go start the engine. If it starts momentarily then I'd agree it's a fuel injector problem. If so get the meter out and check the ECU grounds. PUll the small plug off the ECU. Check the pure black wires on the small PLUG....NOT THE ECU JACK,,,,,THE PLUG. The reading should be under one ohm. If so the grounds for the ECU are good. They probably are since your getting spark.

Might check the fuel lines being crossed. REmover the rear line, the return line and put a piece of exta hose on that hard line and into a bucket/jar/your name it. Jumper the fuel pump check connector and turn the key to ON. Fuel should flow into the jar/bucket/whatever showing that the fuel is indeed above 40psi and there are no obstructions in the fuel lines/FPR etc. Got flow? Good. Not a fuel flow problem or swapped fuel lines. Fuel lines are opposite on a JDM. That's why I mentioned that.

bmxbassrx7

it gets fuel, ive done the thing with the gar it gets plenty. i will check the grounds this week. thanks.

mort2002

iTrader: (1)

r u 100% your getting fuel.. just checking cause i worked on one of my buddies car last night and he had the fuel lines reversed and it was going to the FPR first and the pulsationd damper last.. just and idea, we thougth hi car was getting flooded but it was actually no fuel.. just my .02

bmxbassrx7

well guys i think im going to have to break down, and take it to the man, unless any of you guys are from the lexington North Carolina area, and would be wiling to help out that would be great. Beer would be provided.

bmxbassrx7

so i checked the cas the injectors get signal but the only seem to work when the cas is not in the car. i got a new k and n air flow thing and a new meter. that didn't work either. i put a new ECU in her to still nothing. what else is there?

Infosponge

iTrader: (2)

how far is lexington from durham N.C.? if its not to far ill come and help you out if i can. gust send me a pm. my 7 has some problems to so you can help me gust as much.

HAILERS

Maybe the fuel lines are crossed where they connect to the engine?????? Pressure and return lines crossed is what I mean. Jumper the fuel pump check connector and turn the key to ON. Can you actually HEAR the fuel passing thru the rails and HEAR the fuel returning to the tank by putting your ear to the fuel filler cap?

bmxbassrx7

https://www.rx7club.com/attachment.p...d=188942&stc=1 dose that look right. I know that the picture is blurry, but, the one on the left is the return, the hose that is. So the right one is the send from the tank.

Icemark

your bumps have been deleted. Bumps are forbidden here in the 2nd gen RX-7 technical section. Please read the Atten all new members and old, sticky thread found at the top of this section before posting

bmxbassrx7

so i figured out how to make the code reader that was mentioned to me earlier and i got a code for the water thermo sensor. but the thing said that it would only read the lowest code. dose that mean that there could be more codes.

HAILERS

About the fuel lines. See the fuel filter assy below the brake booster area? Now see the other fuel line that is the return line? PUll the return line off the engine and then jumper the fuel pump check connector and turn the key to ON. Fuel should flow out that return line from the engine in large amounts.

About codes: The water thermo sensor if it has an open wire, causes the ECU to default to 176 degrees as a default temp. With a stone cold engine, that makes the engine harder to start because less fuel will be injected than if the water thermo sensor was connected and working.

bmxbassrx7

well scratch all that i have said about that car the dumb *** that sold me the engine sold me one with a ******* blown apex. so im going to go find him and get my money back. in cash or *** wopping witch ever he chooses. sorry bout the language im not verry happy right now. JAKE

bmxbassrx7

any suggestions on what i should do know.