91 rx7

iTrader: (2)

hey there.
when i crank the switch over trying to start the car: 1- it won't start 2- the engine get flooded and it starts to leak gas from underneath the car.

i don't know wt is it, why the injectors keep on injecting fuel with out stooping???
the stupid mechanic that was workin on the car earlier had a tape all over the relay that control the fuel injecting, i took that off and still the same thing.

need some help? what can it be?

Rx-7Doctor

iTrader: (13)

First of all you need to identify the leak and fix it.

As soon as you turn the key to the on position (not cranking) do you hear the fuel pump come on?

91 rx7

iTrader: (2)

no i don't think so cause i took the fuel hoses to see if the fuel will come out when i turn the key on but nothing happend, unlike when i crank it over the fuel start coming out.

what possibly can it be?

AcidAngel7477

iTrader: (16)

a clog maybe, in the fuel line's?

:AA:

91 rx7

iTrader: (2)

i don't think there is a clog in the ongoing fuel line cause if that is true then the engine won't get flooded (run rich on fuel) but, if the clog was in the returning fuel line then it might be possible that there is a clog in the returning fuel line, and maybe thats why the injectors are injecting to much fuel unless if the injectores or the computer need to be changed???
what do u think people?

gsl-se addict

iTrader: (3)

We need more info.

1. Where is the fuel leaking from? Under the car? Where exactly? This needs to be your 1st fix.

2. Do you know the engine is flooding? Are the plugs wet? Have you tried the deflooding procedure?

3. Has it just started doing this? Has it done it since you got the car? Any recent work done?

4. The fuel pump operation is correct. It should be off unless the engine is cranking or running.

The more detail you can give, the better we can help. Tell us everything you know (what you have tried, what it is exactly doing, does it start sometime, etc.). Then we can narrow it down to 1 or 2 things and then you can check/replace those items.

91 rx7

iTrader: (2)

1- right from the exhuast pipe and i guess its due to the exssisve fuel getting to the engine.

2- yes it floods i don't know why?? the seals are good. no it hasn't done it before, but i changed the engine with a ported engine, and i guess the mechanic was trying to steal some parts and actually he did cancel all the vaccum lines and the switches so i had to redo all that my self, and over that he hoked up the fuel lines in a wrong way that he couldn't get fuel to the engine, so he drilled in the FPR and made the car start but the car would die over 3000RPM so i changed the FPR and tried to start the engine but couldn't, i don't know if its too much psi or the injectors sux. i am not sure if the vaccum lines have any thing to do with that either.

i did deflood it and dried the plugs, and it almost had it once.

3- the recent work i did was hoking up the vaccum lines and installed a new FPR + the vaccum switches and i changed the computer which obviously was working.

the other work was already done when i bought the engine 6ported and 3mm apexs.


now listen the engine would strat with the old FBR that was drilled, and with canceling all the vaccum lines but it would die on 3000rpm, so that means that the engine is good but there is something wrong somewhere i can't figure it out!!!!!!!

74RX4

iTrader: (10)

Maybe he had the fuel feed and return lines on backwards. Not sure why gas would run out of your exhaust pipe if they were backwards, but the car will not start if FPR is stock and lines are switched. The lines from the tank connect to the steel pipes in the web, but eventually....Feed line goes to front of the fuel rail and connects to the pulsation damper. Return line goes to the rear of the rail and connects to the FPR. I worked on my first project SE for a month before I figured out that the PO had reversed the lines.

gsl-se addict

iTrader: (3)

Okay. If it is flooding to that extreme, one or both injectors are probably stuck open. This could be a problem with the injector itself (I would suggest pulling the injectors and having them tested and cleaned). The other possibility is electrical. If the (-) of one of the injectors is pinched or otherwise shorted, the injector(s) will go wide open whenever the ignition is on. The other possibility (more rare) is an ECU with an internal short causing the injectors to go full open.

The other cause of major flooding is a bad/disconnected coolant temp sensor (back of waterpump housing). You can get a new one for about $20 from Autozone, Advance, etc. See if the green plug is fully connected and that the wires are not broken. The connector may be brittle, so be careful when handling it.

I have no idea why your 'mechanic' would drilll out the FPR like that. He probably got metal in the fuel rail and the metal is holding one or both injectors open.

91 rx7

iTrader: (2)

i don't know either, he even posted a thread that he was geting 70psi on the FPR and no gas,, lol cause you had the fuel lines wrongly connected; any way am fixing my car by my self now.
alright then, i'll try to do all that in few days and i'll get back to you, so keep in touch.

thank you all.