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-   -   pissing fuel out of exhaust/left hand side of engine. (https://www.rx7club.com/1st-generation-specific-1979-1985-18/pissing-fuel-out-exhaust-left-hand-side-engine-555425/)

chedda_j 07-01-06 05:38 PM

pissing fuel out of exhaust/left hand side of engine.
 
I started my car up the other day and it ran fine, this was right after i did the manual swap. Started up...ran prety good...idled good.

then i went out the next day and installed the driveshaft and put the oil in the trany, started it up, it ran like shit.

Then i started it up today to find that i had a patch of gas on the ground, now tell me whats wrong here? Its pissing out of the exhaust, i only have a shorty pipe on the mani for now, and maybe somewhere else near the oil pan? If i leave it for a day or so, it sill start bur bur bur and then die, with no luck of starting it again. Wire order is correct i believe, im getting tonnes of spark, the dizzy hasnt been removed, and the car is getting lots of gas...peeing gas actually...any idea?

Rogue_Wulff 07-01-06 05:45 PM

Sounds like it's flooding. There are many items that can cause this to occur.
First step, pop the fuel cap. If there is a lot of pressure in the tank, you have a plugged vent. This can lead to flooding, as the entire fuel system is pressurized.
If that is not the issue, then you need to start looking at the carb.

chedda_j 07-01-06 05:47 PM

Thats what i was thinking, when i was looking at the carb, it almost looked like it was PISSING, literally pissing into the secondarys, while the secondaries werent even opening. ?

Rogue_Wulff 07-01-06 06:01 PM

Either the fuel tank vent system is plugged up, or the carb needs attention. If popping the fuel cap does not release a lot of pressure, take the air cleaner off, and LIGHTLY tap on the top of the fuel inlets on the carb, with the fuel pump running. This will tell you if the needle and seats are sticking. If the fuel stops flowing from the secondaries, then the needle and seats are sticking. In this case, you may be able to add some pour-thru carb cleaner in the fuel tank, and drive the car for a while.
If the fuel does not stop flowing, then you will likely need to rebuild the carb.
It could also be caused from an aftermarket fuel pump that is too high PSI for the system. Stock setup only uses about 3PSI, most aftermarket pumps are 4-7PSI minimum, and need a fuel pressure regulator to prevent the flooding.

chedda_j 07-01-06 06:39 PM

yeah i have a stock fuel pump so il check the jetting, i dont want to keep trying to start the car because every time i do it pisses more and more fuel onto the ground, im worried its going to fire and put the car up in flames.

vipernicus42 07-02-06 12:10 AM

If it's pissing fuel it's *not* jet related.

The only jet-kinda thing that could make it piss fuel was if your air bleeds were 100% blocked off. Then the suction from the engine would suck raw fuel out, but that's highly unlikely.

I'd just grab a rebuild kit and go at the carb. If you're sure that your fuel pressure is good (stock pump won't pump enough to make it piss like that, but my mallory did since the FPR was the wrong one) then something's amiss in the carb. My guess would be needle/seat assembly, though I *could* be way off.

Has anyone tampered with the carb or the fuel system since it last worked? Blocked return line maybe (though that shouldn't have an effect since you *can* run a deadhead system with these cars...).

That's all I can come up with.

Jon

chedda_j 07-02-06 01:03 AM

i have a wire missing on the right hand side that was hooked up before, that needle thinger...could that be it?

Rogue_Wulff 07-02-06 01:08 AM


Originally Posted by chedda_j
i have a wire missing on the right hand side that was hooked up before, that needle thinger...could that be it?

Float bowl vent? Sure could be. The bowl vent solenoid needs 12v supplied to it with the key on.
The bowl vent solenoid is located just under the fuel lines, if that is the part you are talking about having a wire missing, fix it.

Nicholas P. 07-02-06 02:44 AM

yeah, you dont wanna mess up wires.

chedda_j 07-02-06 01:38 PM

yeah, where does that wire come from? The part of the wiring harness that runs behind the engine and connects to the sensors on the side of the block? Does anyone know what colour it is? I know that the one from the sensor is black white? THen i have one cut in my wiring harness that is black/white red dot, that is prety close to the sensor? Could i just hook it up to the battery and try to start it and see if it works?

KeloidJonesJr. 07-02-06 01:42 PM

More pics of your car?

Originally Posted by chedda_j
I started my car up the other day and it ran fine, this was right after i did the manual swap. Started up...ran prety good...idled good.

then i went out the next day and installed the driveshaft and put the oil in the trany, started it up, it ran like shit.

Then i started it up today to find that i had a patch of gas on the ground, now tell me whats wrong here? Its pissing out of the exhaust, i only have a shorty pipe on the mani for now, and maybe somewhere else near the oil pan? If i leave it for a day or so, it sill start bur bur bur and then die, with no luck of starting it again. Wire order is correct i believe, im getting tonnes of spark, the dizzy hasnt been removed, and the car is getting lots of gas...peeing gas actually...any idea?


chedda_j 07-02-06 01:49 PM

yeah im out of a camera right now so all i can do is explain my best. Il take some notes and tell you which wires i have missing, i have some hanging from my harness after doing the swap and i dont know where they go.

Rogue_Wulff 07-02-06 01:51 PM


Originally Posted by chedda_j
yeah, where does that wire come from? The part of the wiring harness that runs behind the engine and connects to the sensors on the side of the block? Does anyone know what colour it is? I know that the one from the sensor is black white? THen i have one cut in my wiring harness that is black/white red dot, that is prety close to the sensor? Could i just hook it up to the battery and try to start it and see if it works?

Black with white stripe sounds correct. I am not sure where it goes from the carb, as far as the harness, but it eventually winds up getting battery voltage when the key is on. For testing purposes, yes, you can hook it up to the hot side of the battery. Don't leave it hooked directly to the battery or it can run the battery down when the car is shut off.
If you cannot find where it is cut, just splice it into a keyed hot.

chedda_j 07-02-06 03:58 PM

rur rur start!

Thats all it was, was that one wire. Started right up, looks like somewhere in the midst of taking the engine out i tore the wire off that led to that connection. What wire plugs into the water pump sensor thinger, plus im missing my oil pressure one too. Where does that connect?

All im going to do is just male to female connect it to a hotwire like you said, plus while messing around with the wiring i noticed that i had a short and a connector that was only working once in a while. *click click * when i wiggled the wires. So i have a little maitance to fix. Still lots of wires.

All i have to say is WOW, i couldnt imagine the difference between the manual and auto setup. Feels like i just doubled my power :D

Now to just work out the minor details *speedo, reverse lights, brake lights, new driveshaft, shifting console mod....oh my there is alot to do..*

vipernicus42 07-02-06 06:27 PM

After I trimmed my wiring harness I took that wire out. Then I temporarily had to go back to a stock carb, so I ran just a 12v wire from my fusible box for it.

Good to know you worked it out.

Jon

chedda_j 07-04-06 12:32 AM

yeah currently im actually doing that until i redo my wiring


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