coolcustoms

i recently did a motor swap out of my other rx7. the motor ran awesome before i did the swap and after the swap it started right up and i ran it for about a total of 20 mins at idle. the first time i took it out i was going out of the driveway at about ten mph and stepped on it a little and it died. i didn't take it over 2500 rpm's. now it likes to flood. it has spark (good) compression (good) and fuel. i can get it to start for about 10 seconds if i deflood it and start it but then it floods out. I think i'm getting too much fuel. i have oversize injectors and a high flow fuel pump. what should i do? is there a way to turn down the fuel? it floods right away but like i said, it has good compression. also, i have a guage under the hood that says the fuel pressure. when the keys on it goes up around 25-35 but when i turn it off, the needle goes down right away. i think there must be a leak causing this but it doesn't leak anything onto the ground! Thanks in advance for the help!

yella41

sounds like you might have a vacumn leak around your injectors... make sure there is orings in the bottom of the injector hole, and that the grommets seal correctly..... i just went through the same thing.... might be your issue

polito Racing

iTrader: (1)

first things first. when you swapped the engine did you take the intake and harness and other suff appart or did you pull the engine without taking the Intake manifold and harness off of it? check the little plug that goes to the back of the waterpump housing. if that is disconected the computer will keep on sending lots of gas and it will flood.
second you say tou have bigger fuel injectors and fuel pump do you have anything to control the fuel? maybe you are pushing way too much fuel in there.

make sure you didnt leave the jumper in the yellow plug on the passenger side tower on the engine bay to prime the fuel system.

set the fuel pressure 37psi with the vaccum hose disconnected, or with the yellow jumper mentioned before with the engine off. and last the perssure is supposed to drop because the pump is not putting any pressure out so unless you are leaking gas somewhere you dont have to worry about that.

coolcustoms

i swapped everything. the harness, ecu motor, readiator, oil cooler. everything. i didn't take the intake off. thanks for the advice, ill check it tomorrow, but would this happen all the sudden because it idled for over 20 mins. before i tried to take it for a drive. i swapped over all the fuel stuff from the other car but i think maybe a setting or something got off.
can you describe this jumper more? where can i get some pictures, i dont recall of seeing one. is it just a electrical plug? there is one of those on the passenger side but nothing is connected to it.

coolcustoms

Just wondering... why would it flood if there's a bad o ring on the injector? wouldn't it still flow the same amount of fuel??? (i guess not)

polito Racing

iTrader: (1)

it is a yellow male plug. it has 2 cables. its the only yellow one in that area and there should be nothing connected to it. it is in the same part of the harness that goes to the AFM. Is you car LHD or RHD if it is RHD the harness would be on the driver side assuming everything would be the opposite to mine. I just say that because your location says seatac and i have no idea of where that is!!!! Ive never heard of a vaccum leak causing the car to flood so i would discard that. the way to set it would be placing a jumper cable on the yellow plug. set the ignition switch to on adjust the fuel pressure set the switch to off and make sure you remove that jumper from the plug. another advice since you flooded your car so bad you might need to replace your spark plugs those could be fouled.

polito Racing

iTrader: (1)

if you had a bad o ring you would leak gas outside of the engine. if you had a laeky injector then that would make your engine flood but like i told you before if you have bigger injectors and fuel pump and nothing to control it that would definetly flood your engine.

coolcustoms

hey thanks for the help again. it's much appreciated. Just so you know, seatac is just south of Seattle, washington. My rx7 is LHD. i just remembered seeing that connection. I just have one more question, what do you mean by jumper? do i have to buy on or is it located somewhere on the car? in the meantime, i'm going to do a search on it. thanks again

polito Racing

iTrader: (1)

nah man just get a little piece of cable peel the 2 ends and insert one side in one of the contacts and the other piece on the other contact just think about it as creating continuity between both sides of the plug. thats all your doing. just make sure you dont turn the car on when you do it. the fuel pump only works when the ignition switch is on start or when the engine is running. what this does is to bypass the pump and allow you to run it whith the switch on the on possition and the engine off that way you have no vaccum in the regulator so you dont have to disconnect the vaccum hose.