KA24DE fuel coming out of exhaust side?

[choleaoum]

Alright everyone, I know it sounds crazy but just picked up a s14 and its leaking fuel from the exhaust side of the car. Previous owner has no clue why, and I'm pretty stumped too. My theory is the injector is stuck, or there is a wiring issue causing the spark plugs not to spark.

I'm going to tear it apart with more information tommarow, it's pretty late in socal right now so I can't get to wrenching. But if anyone can give some useful information that'd be nice, worst case scenario a new KA24DE isnt much, but I'd like to save this one if I could, the head was just rebuilt. It ran fine, and then it suddenly just started leaking fuel threw the exhaust header. (Previous owner did not install the header with washers so it's allowing the fuel to leak)

Yes, it's fuel. Not exhaust gasses or anything. Any ideas?

Leave the negative or trolling comments out please.

[Kingtal0n]

I dont quite understand. The manifold is leaking where? You have an exhaust system ON the car? It sounds like you are saying that gasoline is dripping off the exhaust manifold between the head and the manifold. indicating that there is a exhaust leak at the head (between the exhaust manifold gasket and the head perhaps)

Is that right? Or, is the fuel dripping out of the collector? Or out of the muffler, or what.

Why is liquid fuel coming out of the engine, yes a stuck open injector would be a significant source.
A misfire, as if a spark plug is not firing, should not allow liquid fuel to drip off the exhaust manifold. Very little fuel is going into the cylinder and only after a looong period of time would enough buildup to cause a literal drip in most cases.

I would start with the basics. Do a compression test. Make sure the plugs are actually firing by pulling a plug out and setting it on a grounded surface while plugged into a wire, turn the engine over and watch for spark.

Then you pretty much have it narrowed down to fuel. If it was an sr20 i would say pull the rail out and inspect the fuel rail with the fuel pump running for leaking injector O-rings. I am not sure you can do that on a KA though. But you see where I am going with that? Run the fuel pump and check for leaks.

[choleaoum]

Yeah raw fuel is coming out from the exhaust side of the head. How would a injector o-ring cause this? I figured it would spew out from the fuel tail if that's the case. I'm going to check the fuel pressure regulator, maybe it's stuck. Ill have more information later in the day.

Ill check for spark and run a compression test. I just don't like turning it over too much. Fuel spews out like crazy from the head. Cylinder 2.

[Kingtal0n]

Turn it over by hand or turn the distributor do not use the starter it could hydrolock.

[choleaoum]

or can i just turn it over with all the fuel injectors disconnected?

[choleaoum]

Turns out it was a bad o-ring!! Turned it over with the spark plugs out. Fuel shot everywhere. Cylinder #3 still has some kinda small mist of fuel shooting out though. Any ideas? all o-rings were replaced. We tried replacing the injector, didn't fix it. It's shooting out fuel but not as bad. It use to be like a water fountain, now it's just a small mist of fuel.

Fuel rail looks fine too oddly enough.