RalliArt broke! what happened?? Help!

[MikeW-RRE]

Originally Posted by RG-RA

yea it tries to start but nothing and i found a hose popped off but to have no idea what it goes to, maybe fuel regulator? dont know.

That is your fuel pressure regulator hose. When the boost pressure in the intake system goes up, the fuel pressure in the fuel system needs to rise at the same rate. The ECU gets programmed assumeing that the fuel pressure is roughly 43 psi higher than manifold pressure. If it isnt, not enough fuel gets injected into the motor. IT IS SUPER IMPORTANT!

If that hose isnt connected, you dont get extra fuel pressure just when you need it most. You are running lean :-/

The intake manifold gets kind of hot right behind the radiator there. Also the rubber of the hose is kind of crappy and has no clamps on it. It gets stretched a little and loosens. Right about when you are raising the boost higher than stock, it is ready to hold less than stock pressure :-( It pops off.

Cars that get dynoed here we always put a zip tie on each end of that hose. Some I tug on slip right off. I'll replace those with a new thick walled silicone hose. This is a common problem with EVO Xs and the RalliArt is the same right there.

With that hose off, you also get a lousy idle with the big vacuum leak. The lousy idle is always a reason to check that there hose.

Mike W

[MikeW-RRE]

Check your spark plugs. If the tip is blown apart and or the porcelain is missing you will have a busted piston in that hole. Compression check confirms that.

Mike W

[RG-RA]

Thanks for the info mike that makes it even more understandable I just wish I knew that before I would of ziptied that bitch! I wish there would of been some kind of signs but idle and everything was fine oh well things happen just gotta fix it and maybe look into some new internals I guess. Finding out for sure early next week hopefully

[MTZL]

Hope you have a speedy rebuild.

[zeRep85]

Originally Posted by MikeW-RRE

Cars that get dynoed here we always put a zip tie on each end of that hose.
Mike W

:tear: i remember when you put my zip tie hahah

[BravoZero]

Let us know what you find out bro.

[RG-RA]

Yea I will this weekend waiting Shit is killing me!!!

[RG-RA]

so decided to go forged internals since i was gonna do it eventually anyway. and rebuild should start next week parts are already being ordered. and i will get pics when the engine is apart at the beginning of the week hopefully.

anyways so parts im going with are as follows excluding the head parts because we dont know if they are damaged as of right now

darton sleeves
arias pistons 86.5mm
eagle H beam rods
arp head studs
arp main studs
new gaskets
ams cam cap
kelford 214b cams
beehive springs and retainer kit

[EricS09RA]

everyone I know has been ziptying that hose for this exact reason. apparently it's pretty common for it to pop off. I would highly recommend that anyone who hasn't added some sort of clamp or ziptie to that hose, does so immediately!

[RG-RA]

Zipties or safety wire FTW LOL