FI Bus: Which Vac Hose Releases Residual PSI in Rail?

Velokid1 · Post by **Velokid1** » Mon Oct 16, 2006 12:17 pm

Well, number 1 injector (the rusty one) is weeping a tiny bit of fuel and I need to locate a new injector and replace.

Remind me which vac hose I disconnect and suck on to relieve the built-up fuel pressure before disconnecting the hose. Please.

Greg

spiffy · Post by **spiffy** » Mon Oct 16, 2006 12:45 pm

I believe it is the one connected to the fuel pressure regulator. (Anyone else have a second opinion?)
Let me know if you want an extra injector....may take longer to get to you though.

Velokid1 · Post by **Velokid1** » Mon Oct 16, 2006 1:43 pm

spiffy, I do indeed need another injector. PM me with a price.

How much does it cost to have an injector cleaned or rebuilt or whatever? Seems like it's weeping from the little rubber hose.

Randy in Maine · Post by **Randy in Maine** » Tue Oct 17, 2006 3:31 pm

Lay a good suck on that FPR vacuum hose and all of the pressure in the FI rail will head back to the tank.

Personally I have a hand vacuum pump to do that. I really don't suck.

To get your injectors cleaned and calibrated I used to use cruzin, but he had a death in the family. About $80 for all 4 and comes with new hoses.

Try these guys http://www.witchhunter.com/index.php4

Velokid1 · Post by **Velokid1** » Tue Oct 17, 2006 4:29 pm

Excellent, thanks Randy.

Dump question #57: The FPR is the can sitting on the firewall right before the return to the tank?

Randy in Maine · Post by **Randy in Maine** » Tue Oct 17, 2006 6:00 pm

Sort of like this.

spiffy · Post by **spiffy** » Tue Oct 17, 2006 7:24 pm

Velokid1 wrote:spiffy, I do indeed need another injector. PM me with a price.

How much does it cost to have an injector cleaned or rebuilt or whatever? Seems like it's weeping from the little rubber hose.

I have four used injectors and I have no idea if they are good or not, they should be okay

I will send you one so that you can test injector hunting skills for me.

Post by **Amskeptic** » Tue Oct 17, 2006 8:25 pm

You can fix the injector.

Remove it.
Hacksaw through the crimp metal at the base of the hose until it is almost bisected. Peel it back and forth with your needle nose Vise Grips like a hanger you are trying to break. Razor blade the hose in half until it lifts off the injector when you pull it. Cut a new section of hose the same length as the old one with a hose clamp at the injector end and another clamp for the fuel rail end.
Cost. . . . $1.69 for the clamp and pro-rated hose length, labor is free.
Colin

Velokid1 · Post by **Velokid1** » Sat Nov 04, 2006 1:50 pm

Hola,

El never mindo... she ees op and a'ronning now. Dee fuel is a'no spraying all over dee enjeen no more and all is a'muy bueno.

Colin's grande queek feex really did big set me op nice! Ees rock and rolling now, muchachos!!!

Gracias!

Sincerelito,

Hispanic Mechanic

Post by **Amskeptic** » Sat Nov 04, 2006 8:46 pm

Velokid1 wrote: Dee fuel is a'no spraying all over dee enjeen no more and all is a'muy bueno.
Colin's grande queek feex really did big set me op nice!

Keep an eye for any dampness/wetness when cold. Those sorts of fuel leaks are more pronounced when the engine is stone cold. They usually develop slowly. . . .
Colin

Randy in Maine · Post by **Randy in Maine** » Sun Nov 05, 2006 3:25 pm

Also to test the residual pressure in the fuel system, hook up your fuel pressure gauge, and start the engine up and then shut it off for about 20 minutes or so. Check out the gauge.

Even a small leak will drop the fuel pressure in the system down below 21 psi.

Itinerant Air-Cooled

Itinerant Air-Cooled

FI Bus: Which Vac Hose Releases Residual PSI in Rail?

FI Bus: Which Vac Hose Releases Residual PSI in Rail?

Re: Amskeptic: Which Vac Hose to Release Residual PSI in Ra