Sindregutt

Well, i got this EUcar with a Jspec engine. And the big problem is fuel. My engine is constantly flooded.. Ivr checked my injectors also and they dont leak!
I saw in the FSM that the fuel regulator on the secondary rail had a vacum hose and the primary didnt have any vacume hose. But on mine engine its different! The secondary rail has a regulator with a screw and the primary has the vacuum hose.. Is this mixed? (it is stock)...
does the fuelline from the tank connect to the secondary(upper) rail or the primary(lower) rail?
Maybe my fuel hoses are connected wrong! (but the engine does run abit either way)

hmm, again, i dont understand why my engine floods!

Silverfc88

iTrader: (7)

I just looked at my fuel rails the other day on my Jspec and compared them to a set of american ones. The Jspec ones are backwards. The pulsation dampner is on the Secondary fuel rail and the Fuel Pressure Regulator is on the Primary rail.

So you have to run the fuel line from the fuel filter into the PD on the Secondary fuel rail. Then to the primary and out the FPR then to the return line.

Remeber the FPR is the last thing in the system before it goes back into the gas tank.

Check your fuel lines. If they are ok then your flooding problem might be your injectors.

Tournapart

iTrader: (4)

if i get an after market primary fuel rail and use a FPR that totally bypasses the dampner, right? or do i need to also get aftermarket fuel injectors? S5 N/A

Sindregutt

I checked my injectors, they didnt leak. 1.
The secondary rail is the upper one ? and the primary the lower one?
2.What is a pulsation dampner?
3. The fuel regulator got a vekuum hose connected?

i dont understand how this **** works.. can someone make a drawing?

Silverfc88

iTrader: (7)

Upper long fuel rail is the secondary rail.

Lower short is primary.

Fuel Pressure Regulator should have a vac nipple/hose going to it.

Pulsation Dampner doesn't have a vac nipple on it. It evens out the pulses coming from the injectors opening and closing. Kinda like water hammer.

Do a quick search on the forum for pulsation dampner.

Sindregutt

ahh, the "thing" at the secondary rail looks like a fuel regulator but doesnt got the vakuum hose.. insted it has a screw in the center ?

Sindregutt

is that a pulsation dampner? and what is the "thing" at the primary rail? it got a vakuum hose but no screw in the center

Sindregutt

ahh i found it.. its the thing connected to the primary.. the pulsation dampner is connected to primary and fuel inn.. and the pressure sensor to secondary and fuel return.. strange that i dont got any vakuum hose on my FPR.. hmm

Sindregutt

Can someone explain how the MAP sensor on my T2 works? with the voltage, vakuum etc? thanks

NZConvertible

Yes.

Fuel pressure regulator (FPR).

No, the pressure sensor is a totally different component that's not even on the motor.

You still have your parts mixed up. As you were told above, on your J-spec engine the pulsation damper (which has no vac nipple) is mounted on the secondary fuel rail, which is the long onn mounted on the manifold. The fuel pressure regulator (which does have a vac nipple) is mounted on the primary fuel rail, which is the short one mounted on the engine.

You must have a vac line on the FPR or your engine will run lean under boost and blow...

Sindregutt

okey so then i need to connect the fuel inn to the primary and retur on the secondary? Totally diffrent from the FSM.. hmm

NZConvertible

No! As posted earlier, the FPR is always the last component before the return line to the tank. The supply line from the fuel filter goes to the pulsation damper on the long secondary rail and the return line goes to the FPR on the short primary rail.

The online FSM is for US-spec cars. Your engine is J-spec, and they have different fuel rails as per above. There are a few other minor differences, mainly missing emissions gear.

Sindregutt

I understand that the FPR is the last component, but I DONT understand what component on my car is the FPR.. The thing on the primary is exactly the same as in the FSM and but the thing on the secondary misses a vakuum hose but got a screw in the center..

I do understand what you mean but isnt it stupid to have it totally opposite on a jspec?
Sure that the thing on the secondary rail isnt a FPR ?

Silverfc88

iTrader: (7)

Can you take any Pics of your fuel rail?

Maybe when the Jspec was dropped in they got the rails mixed up. If you have fittings that both have screws at the end of them then something is wrong.

http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW

Scroll down and look at the pic the longer rail has a Fuel pressure regulator. One larger nipple for fuel and one smaller nipple for vacuum.

Sindregutt

well the one on the primary is with a fuel and vakuum hose without a screw.. the one on the secondary is with fuel hose and a screw but without a vakuum hose.. I need to know where ill connect the fuel inn! I know that the FPR should be the last thing before the return BUT its strange if they change the position of the FPR on a JSpec? it sounds logical to connect feul inn to the primary ...

NZConvertible

So there is no vac nipple on the FPR? Not just no hose but no metal nipple at all on the FPR? If it's not there, you can't run the motor. You must have a working FPR.

Sindregutt

Look here! took some pictures today!

Sindregutt

AND HERE IS THE FPR(?)

http://i8.photobucket.com/albums/a10...elrail/FPR.jpg

Sindregutt

NZConvertible

In the first photo, I can clearly see the FPR with vac line attached at the right hand end of the primary (lower) fuel rail. Your FPR is fine, stop worrying about it.

The second photo is of the pulsation damper, which I assume you took off the secondary (upper) fuel rail.

Sindregutt

haha
that is correct, i think ive come to an end to this problem.. Its like you said NZ.. they have changed the position on the pulsation damper and the FPR.. STUPID!! hmm, so when i had the fuel inn to the secondary and out from the primary it was correct :P hrmf..

Sindregutt

Is there any difference between the Jspec ECU connectors and the A-spec?

Sindregutt

what is the little screw in the center of the PD for? and what position is best for it?

NZConvertible

Nope, but there are slight wiring differneces.

Don't touch it. You can only mess it up.

Sindregutt

to late, it was the first thing i touched ;S and now it doesnt seem right.. When i turn on the fuel pump it popps abit out from the PD..how can i adjoust it to be right? :S