RoughRex

Allright, I'm replacing my fuel filter against my better judgement (worried about the old PD) and I need to make sure I bought sufficient fuel hose. The hose I bought is rated at 50 PSI. The way I understand it the hoses only need to hold 39.8 PSI so 50 should be ok. Can someone confirm this for me?

spot_skater

50 should be fine.

Just an FYI for some others, what size was the fuel line you are using? 9/16"? I ask because a buddy asked me what size I bought when I replaced mine, and I forgot...

James

Ice_Wolf

As long as it's high pressure fuel line rated for fuel injected cars, you should be ok. I bought mine from Advanced Auto Parts and ran it from my fuel filter to the fuel rails and it's help up perfectly, no bulging or leaks in the lines so far.

RoughRex

Fuel lines are 5/16 or 7.9mm

ROTARYROCKET7

Im james (spotskater) buddy, i wanted to know the diameter so i can just run in and get it without having to go under the car again. Wont be able to go under her for a few days since my spring break is almost over.

Thanks

Jason

ROTARYROCKET7

where did u get the 39.8 psi rating? Thanks

Digi7ech

iTrader: (1)

Maybe from static rate of the fuel system?
Either way they sell Fuel injected hose which will hold it no problem. I think I used 3/8th size.

I've done pressures in the 65psi range when tuning and it holds fine.

Stock FPR with walbro ran around 45psi on my car.

RETed

NO IT'S NOT.

GET HOSE THAT IS RATED FOR *FUEL INJECTION*.

You're buying that "carb" hose, which is NOT designed for fuel injection applications.
It's going to start leaking in a matter of weeks.
Do you really want to risk a fuel leak and possible fire?

I bet you got the "J30R7" stuff?
You need the "J30R9" rated hose.
YES, this stuff is expensive - like $5 / foot.


-Ted

clokker

iTrader: (2)

I just picked up Goodyear J30R9 line (blue liner inside) for a buck a foot at Checker so it's not that hard or expensive to get.
Maybe your prices are higher due to location?

RoughRex

You are correct... they gave me 30R7 Dangit. I knew 50PSI sounded low I even asked two different guys at autozone to verify and they said it was the right stuff... shows what they know. I specifically asked for "high pressure fuel hose" too. That means I have to wait until monday to get the correct hose.

FSM page 4A-67 (page 68 in the PDF)

http://www.teamfc3s.org/main/factory...SYSTEMS_NA.pdf

RETed

No, you just got lucky.
...or they sold you the wrong hose.
...or they mispriced your hose.


-Ted

RoughRex

Son of a.... Ok, it turns out that Auto parts stores are open on easter so I was able to go out and get the hose today. I replaced the lines and the fuel filter and re-used the stock hose clamps. I went to prime the system and it leaks like a F'n sive. I have to assume this is because the new hose has a plastic liner and requires more compression to get a tight seal. Do you guys think that new screw type band clamps would fix it?

Digi7ech

iTrader: (1)

I've always thrown the stock clamps away once you pull them off. most of the time they don't clamp enough on new hose.

ROTARYROCKET7

How do you prime the system to get enuff fuel to fill the filter?

cptpain

iTrader: (1)

just turn the key to just before you crank the engine over("on" position) a few times and that should prime the fuel system

ROTARYROCKET7

Wow i was thinking that but thought htat there might be a more intricate way of doing this. Hehe, its PRIME TIME!

Goingto AZ for that fuel line tomorrow, any diamaters ppl?

clokker

iTrader: (2)

5/16" I.d.

boosted1205

iTrader: (9)

Whenever you repair/replace parts on the fuel system, pressurize the system and check for leaks before starting the car.
There is a yellow connector near the pass. shock tower. Jumper that and turn ign. to "on" then look for leaks. If all is OK pull it out and start the car.

When you buy fuel hoses, it's easy to tell if it is fuel injection hose or carb hose.
Most times boneheads at the parts counter will say it's the same.
Don't need to remember part numbers..just ask for fuel injection hose .
If you look at fuel injection hoses, it has more liners in the hose than carb. hose.
Easy to tell.

ROTARYROCKET7

So the fuel hoses are measured by I.D and not O.D.

Jason NYC

clokker

iTrader: (2)

All hose is typically specced by I.D., tubing by O.D.

ROTARYROCKET7

yeah i just went to autozone and i could see how someone would get the wrong hose. The guy came out with 5/16" (7.9mm) hose but was not for FUEL INJECTION. So i said i need this hose thats rated for FI cars he was like we dont have any. I went in the back and searched around and found a box. Opened it up and saw the number J30R9 and remembered this post. So yeah its J30R9 lol, and 5/16" Diameter.

Wooosh now i can do my FF. Is there a way that i can do the Filter withouth having to spill gas all over myself, and if some gas spills it wont keep spilling out since the cars not primed up right, just watever is in the lines.

Jason NYcizzzle

RoughRex

This is the correct way...
You are more than likely gonna get a little gas on you. Wear long rubber gloves if you are worried about it. I've heard several people say that only a few ounces of fuel will leak out if you just let the car sit for a day and cut the fuel line instead of depressurizing. My car sat for 4 days before I did mine so I just cut the line instead of trying to hunt down the plug for the fuel pump. I lost a little over a pint of gas before I gave up and plugged the line. I don't know if depressurizing would have made a difference but I would definately have something handy to plug the line If I were you. I used a 3" long piece of hose with a round pencil clamped in the end of it. Not really the proper technique but, it worked in a pinch.

ROTARYROCKET7

^^ thanks, this post was very helpful. I posted a similar thread relating to FUel lines and wasnt as productive.

Jason NYC

ROTARYROCKET7

Well i replaced my fuel filter. Measured the length of the FUel line on both sides and set up the filter before removing the old one. Disconnected the top line from the top of the engine. Was sliding off slowly then BOOM, pops and i get a nice shot of gas right in my right eye!!!

I rinse it out, get back under the car and slide the filter off the bracket, holy kingdom come, i got a gas shower. I put a vice grip on it and still kept coming out. Had to fold it twice and open the vice grip, while the gas is still coming out. By the time i got the clamp on it, and gas stopped coming out, the gas made it down my arm, into my armpit and down my ribcage to my pants. I reak of gas!!!

Took off the other hose and put the entire assembly in, new hose and new oem filter.

Primed the system with the ignition (Couldnt find the yellow thingy by the shock to jump the FP).

Car started right up....left her running for 15 minutes, checked for leaks from under the car and from the top of the bay ,and im good.

Next time ill look into doing it right by depressurizing the filter. How long before you do it again, 15000 miiles?

P.S. The old line was Friggin 3/8", no wonder this guy had mad clamps on it. Is it possible for some gas to come out the hose cuz it was too big? Can that contribute to my bad gas mileage.
Thanks for the HELP!!!!

clokker

iTrader: (2)

Either your fuel lines were leaking or they weren't- regardless of hose size- and presumably you would have noticed if they were.
Sounds like the "mad clamps" were actually sealing so the incorrect hose size wasn't affecting your MPG.