Calderone

Hi guys im planning on replace my fuel filter
What's the Oring size on both sides of the Filter or line ?
Thanks !

GKK

I don't remember ever seeing any O-rings. The ends are a Flare/Taper fitting similar to the male/female "AN" fittings.

TheFinn

I had none, either.

'Shifter

There isn't any o-rings, the fuel filter for our cars (as well as quite a few early GM f/i cars and trucks), has a female inverted flare on either end. Just be sure to use two wrenches!

tblt44

well I have a 95 and do have o rings on the end of the fuel lines,there about 3/8 dia.I had to buy a pack with many sizes for about 5 bucks.make sure you getthe dark orange ones not black.
mine was in very bad shape.
everything I have found said you should have o rings

http://corvette.wikia.com/wiki/Build..._O-Ring_Filter

http://www.ehow.com/how_6322008_repl...el-filter.html

GKK

Just remove the fuel filter and replace with the new one it's very straight forward, no O-rings at all. You'll see.

GREGGPENN

Ughhhh,,,,there are 0-rings. They are on the fuel lines, not in the filter. It's the same size as the ones used on the fittings to the fuel rail.

They are very small and it's hard to figure out if/how they are useful. I'm guessing it's possible to get a seal if you tighten the "s" out of the fittings. My local parts retailers all said no 0-rings are listed in their books. You have to buy the dark-orange "HELP" packs and pick the size that looks the same.

Hope they sell those packs down under.




Did you get your smoking problem figured out?

tehcarguy

Make sure you get ALL the pressure out of the system...I didn't and got a face full or gas.

hooked073

I have never understood why they are not supplied with the filter.

joesgulfstream

I think you can get them at the Dealer

'Shifter

Here is the fitting close up...




There isn't anywhere for an o-ring to be that wouldn't cause a leak. A male inverted flare (your fuel lines), seats directly against the female flare, trying to put an o-ring in there would result in the o-ring being completely shredded. I've sold GM fuel injection fuel filters since they arrived on the market, and probably only sell 20 or so a day, and I've never been asked for o-rings in 30 years by any flavor of mechanic or shop...

WVZR-1

Sammy,

There are sealing rings. The GM # 22514722. That's a fuel line seal that's used on most GM fuel-injection systems for the inlet seal to fuel rails etc. I don't believe you should have a problem finding them or an "equivalent".

Fel-pro might be 4-90457

I don't believe I'd try "generics"!!

WW7

Sammy, also don't buy a Fram gas filter, I had one that the inside came loose and partially blocked the fuel flow causing the engine to buck and miss. That was a lot of fun trying to figure out what was wrong....WW

JackDidley

I run the car real low on gas. Jack the front up high and lose very little fuel.

WVZR-1

Foolish move for a "submerged electric pump"!!!

'Shifter

You can pull your fuel pump fuse and run your car until it runs out of fuel, let it cool all the way down, then-with a rag on hand, depress the schrader valve on your fuel rail to relieve any left-over pressure. After you've installed your new filter, turn your ignition on without starting the car, ensure that you have no leaks, and allow your rails to refill, than start it up, and make sure you still have no leaks.

Aardwolf

Not to worry, the pump is cooled by the fuel flowing through it.

The rail and fuel line fittings are Saginaw type with o-ring. They are the same size so if you have extra for the top lines they will work below. Some years had a smaller and larger line. Here is a picture of an adapter showing the o-ring.

Calderone

Thanks guys , im thinking that some models use O-rings and some not
maybe depends on Year , i would love to be 100% sure which years ...
I don't want to take it off and then not being able to install the filter because i dont have the orings ! for example 87 has 2 different fuel line sizes at the rail.

Calderone

You know what,at one point i didnt use any orings on the fuel lines to rail , and i never had a leak, after reading some TPI fuel line articles i found that i needed orings, i put it there and yes the oring was totally crushed, might be the same situation on the fuel filter side ????
Why some model owners claim to use orings and other don't ?

'Shifter

I really couldn't say...knowing how the male and female flare-fittings mate leave little room for an o-ring, and the fuel filter is the same for all of our cars. Up until about a year ago, I had four GM vehicles that use the same filter, and they get changed anually, and I've never used an o-ring on any of them, and never had a hint of a leak. Now up on the fuel rail is a different story, but those are not inverted flare fittings either. Think of a brake line-inverted flares there too, see any o-rings?