rb25 gas in cylinder

Discuss the RB20, RB25 and RB26 series engines.
crazyandevil05
Posts: 83
Joined: Sun Jul 01, 2007 1:02 pm
Car: 1995 240sx SE, RB25

Post

ok, like it says, i pulled the plugs today and in #4, you can see the puddle inside the hole.1st the info. 95 240sx. series 1 rb25. stock turbo, injectors,, intake, MAF, brand new coil packs (yeah, the real ones from japan, great way to spend $1k) profec boost controler (turned off) sparko intercooler.now the skinny:about a week ago, it started to lean out at around 5k, 8psi of boost. i changed the fuel filter, didnt work. i figured it was the fuel pump, 255 walboro. i checked connections, nothing. i babied it all week, and noticed the pump got louder than normal. this morning it ran fine, but on the way home, as soon as i started it up, it was running rough, bottomed out at 10 on my afr gauge, then stalled. so i called a tow and got it back home. pulled the intake, spark plugs, and fuel rail off to check the injectors. all plugs were soaked but only #4 has any visible gas in it. it was bad, when the truck picked me up, i could see a little puddle of gas that leaked out from one of my numerous exhaust leaks. also, when i primed the fuel pump(not starting, just turn the key, it would hold pressure until the pump turned off, i could hear hissing by the injectors and the pressure dropped down to nothing. i figured mayby the injector is just spraying all it can all the time and flodding it out. is there anything else that would make the one stay open other than a shot injector? and if so, why would the other injectors be wet? a bad cas would dump fuel into all right? thanks for all the help in advance.


crazyandevil05
Posts: 83
Joined: Sun Jul 01, 2007 1:02 pm
Car: 1995 240sx SE, RB25

Post

Nevermind, i found the problem, one of those injector retainer clips got busted, #4, and blew out the rubber washer seal, pushing fuel around it and dumping it into the cylinder. does anybody know where i can find those little clips?


Return to “RB20DET / RB25DET / RB26DETT Forum”