Sammy Built

iTrader: (18)

Hello fellas,

I've been working on a friends 93 FD non sequential TT. The Rx-7 has been a lemon since the owner purchased the car. The car has been sitting for the past 7 years with a blown engine. The original owner had lots of sketchy work done underneath the hood. The motor was heavily ported with all 850cc injectors on a stock ecu. Which lead me to believe he didn't know what he was doing.

So after doing a overhaul with a new motor and rebuild. We went ahead and converted to non sequential for simplification purposes. Installed some factory known working injectors, FPD, and FPR that came off my fd. After all done and said the engine harness took a crap on us and we lost spark. I went ahead replaced the harness with a good unit which fixed all the spark issues. So finally I got the car turned on and it shut off immediatelly. I started checking around and found a puddle of fuel coming off the turbo manifold, exhaust, etc. So at that point I reliaze the car was flooding in the worst condition I've ever encountered without exaggeration.

I went ahead started deflooded the engine, change plugs, added some gas to the tank and literally after cranking a couple of times. Almost about 5 gallons of fuel just dumped on the floor coming straight from the exhaust. At that time I went ahead and did a compression test and had all solid numbers on each face front and rear rotor. Just wanted to make sure I wasnt wasting my time. There is obviously something not right but just can't figure it out.

Talked to another Rotor head on the forum and he recommended me to pull start it. I was a little stunned since the motor is pratically in excellent shape with all new seals. So I gave in and went ahead charged the battery, installed new plugs, and attempted pull start procedures. We got the car running finally holding the gas pedal to 4k to see if we can clear it out. Lots of smoke consistently! Finally while the owner was working the throttle I took a peak under the car and just straight fuel coming off the exhaust, and turbos. I mean its just the worse thing Ive ever seen.

I'm mentally exhausted with this junk car lol. Its just spitting straight fuel out and I cant figure why. I did check the ecu to see if its had any markings on the out side of it. Thinking it was chipped but even then it shouldn't be much of a difference in fuel consumption. I did verify the vaccum hose diagram. Just to verify the placement of the fuel pressure regulator vacuum hoses but all checked out fine.

I'm now open to advice to fix this flooding issue I have!

RTRx7

iTrader: (2)

Try some new injectors?

Seems like you should go back to stock and see where that takes you. I don't like cleaning up after others.

Sammy Built

iTrader: (18)

It's really weird because I know the injectors were working fine in my car. I was thinking to remove them and get them professinally cleaned. I do know sometimes injectors get stuck open. So it doesn't sould like a bad place to start.

Mps_hell

Is it stock fuel rails ??


if it is you can remove the rails with the fuel lines in place and turn the ignition on with the injectors unplugged. No fuel should come out. the plug them back in and try again and see what happens?

also has your FPR got a gauge on it ?

motoron

Sounds like un-mitered fuel getting past the injectors-possible injectors reversed primary secondary
or bad O rings.

Sammy Built

iTrader: (18)

Ok, before I pull the injectors off I'll test it out. This car is all stock except for the non sequential conversion. So rails, injectors are all OEM.

Sammy Built

iTrader: (18)

Yeah that's exactly what it feels like. The fuel lines are in the correct orientation so that's not the issue. I'll have to inspect the O rings though.

Sammy Built

iTrader: (18)

Great catch for the hell of it we checked the fuel feed and return to see if they were reversed. Guess what they were! I really appreciate it man. Sometimes we get caught up and lose attention to detail.

I should of caught it from the begining. But what actually thru me off was that I MARKED the fuel lines and didnt reliaze the owner had them the wrong way all along. Oh well I guess it was my fault trusting other peoples work.

The car was idling on its own so glad got this figured out on to the next thing now. Thanks again!

Sammy