have no idea what happened

[bkos90]

Hey everyone, i really need some of your input on this issue im having.
I have a S13 with an Rb25det and just today i went over a friends house and stayed there for about 2 hours, later i come out about to go home start my car drive about 50ft and then the car just dies.
Motor wouldn't turn over like it was hydro locked. so i pushed it back to my buddy's house and we started taking things apart to see what the problem was since the motor would sometimes crank for a split second and then wouldn't crank at all and then would crank again in like 5 mins.
So we took out the spark plugs and found out that cylinder #1 was full of fuel, and so was #4.
Then we started to look at what cause the problem and took off the fuel rail and found out that the injector seal was completely ripped and hanging.
so we fixed that and cranked the motor a few times with all the spark plugs out so it would spit out all the fuel. then we cleaned everything and put it back with new injector seals and the motor just turns over but doesn't even seem to want to start. It also cranks really fast like there is no compression in the cylinders.
I have no idea what to think anymore.

[240z4u]

First things first, you need to change the oil before you even try to start it again if the cylinders were full. Then compression test.

[platez808]

did you check if its sparking? is your fuel pump priming?

[USMCgetsome]

First things first, you need to change the oil before you even try to start it again if the cylinders were full. Then compression test.

this!

[bkos90]

Alright, so today i actually had time to figure out what happened since i was working a lot.
I took out the spark plugs and cleaned them then i took off the fuel rail and checked if none of the injectors were leaking. Everything ok up to this point.
changed the oil
Then i compression tested all the cylinders, got about 70psi through out all the cylinders with a cold motor... NOW isnt that a bit low?

So i figured with 70psi the motor should still work.
- then i tried cranking it and nothing... pulled the plugs out they were soaked in fuel.
-Cleaned all the plugs and put them back, disconnected the injectors
-Cranked the motor again a few times. and pulled the plugs out after. AGAIN soaked in fuel
-At this point im thinking i got fuel in my manifold, so i took off the IC pipe that connects to the TB and just got hit in the face with the smell of fuel, so looked inside the manifold and couldn't really see much.
- Started to disassemble the IC piping completely and BAM about 3gallons of fuel came pouring out.

Lesson Learned: Side feed fuel injectors are FAIL one seal goes and your motor goes! I got lucky this time that it didnt cause any motor damage
would have never happened if they were top feed.

[RustspecS13]

70psi is horrible. Maybe since its even it may run, but not for much longer.

Or your gauge is garbage. Try testing it again with another gauge.

~Alex

[ItzGenX]

70psi is horrible. Maybe since its even it may run, but not for much longer.

Or your gauge is garbage. Try testing it again with another gauge.

~Alex

I think the 3 gallons of fuel in the intercooler was enough to block the flow of air to throw the reading of the gauge off since the compression test is conducted with WOT. Even with open throttle, air would have had to fight it's way through an ocean of fuel to make it to the cylinders to be compressed into the gauge.

[bkos90]

70psi is horrible. Maybe since its even it may run, but not for much longer.

Or your gauge is garbage. Try testing it again with another gauge.

~Alex

I know its horrible, that was because it shad fuel in the IC pipes which was blocking the air flow.
With the motor cold with all the fuel taken out i got 110psi all around

[RustspecS13]

I'm betting it had more to do with the fact that the rings weren't sealing because they didn't have any oil. I've done some compression tests and forgot to hold open the throttle body, and went back and retested and got the same pressure.

And since you just had fuel washing down the rings I'd bet they just weren't working fully. And since you have good compression, congratulations sounds like you got lucky!

~Alex