how to replace fuel injector hose?

[winstonsmith]

The hose on the first fuel injector has cracked open. How exactly do I go about replacing it? Do I have to replace the whole injector or can I just put a new hose on? Is it possible to loosen up the fuel rail enough to lift it up to get the hose in place or will I have to pull the whole rail off to do it? If I can just replace the hose what type of hose exactly is needed and what size and diameter is it? Thank you!

[280zgod]

i just did this last week to my 75 z. my mechanic recommends new fuel injectors but if you want to just replace the hose... first off which injector is it? cuz that will make a difference to how easy it is to pull off or whether or not you need to remove the fuel rail. Secondly is it an injector with the stock like brass fitting connecting the fuel hose to the injector or does it have one of those stainless adjustable brackets? if its got the stock fitting then you either have to take a grinder and grind through that without damaging the injector or buy a new one. if its just a piece of hose with a hose clamp holding it to the injector then you just remove it like any other hose and replace or buy a new injector for fun. normal 5/16" fuel line should work fine for all the lines unless youve increased the fuel pressure then you would need to buy fuel injection hose still 5/16". hope that helps a lil bit.~ Jerrod

[280zgod]

oh its the first fuel injector then yes you can loosen the rail enough to get that one injector off without completely removing the fuel rail. Actually i got all mine off without removing the rail but anyway. yeah so 5/16" fuel hose and it should be relatively easy to do good luck.

[sblake01]

....normal 5/16" fuel line should work fine for all the lines unless youve increased the fuel pressure then you would need to buy fuel injection hose still 5/16"...

FALSE! I wouldn't use anything except 250psi fuel injection hose on any fuel line on these cars unless you like replacing ruptured fuel lines. Fuel pressure on carb cars-about 4 psi, fuel pressure on EFI cars-about 40 psi. 'Normal' fuel lne is rated at 40 to 50 psi depending on where you get it.

[280zgod]

yeah z fuel pressure is 36psi and i myself use 180psi line but where is this mystical 250psi line you speak of blake i would really like some. i went to a bunch of custom rubber line stores and the highest they carry is 180 whered you get 250?

[sblake01]

ACE Hardware sells it. And it's only $1.99/ft. compared to the higher prices the chain auto parts stores charge. I get a 25% employee discount but I used to buy it from them before I was an employee. The ACE number is 4090437 and the manufactures code is RFKF. It is made by Anderson Barrows Corp. and is rated to 250psi. Not really mystical at all actually.

[280zgod]

cool thanks there is an ace two blocks from me ill have to check it out

[jinsei888]

http://www.jcwhitney.com/autoparts/Product/tf-Browse/s-10101/Pr-p_Product.CATENTRY_ID:2005766/p-2005766/N-111+10201+600010263/c-10101

[sblake01]

Two year old thread. The stuff you linked to is quite pricey. I can buy 10 feet of hose with my discount for less than Whitney sells the 18" piece.

[TomoHawk]

You should do your car a favor and get the entire fuel rail off, the injectors out, and have them serviced. I noticed that more than 1 one my hoses werew ready to go, and the in & out lines needed replaceing too. Then you'll have all 6 new hoses & good clamps when you put it back together, and the knowledge that all the injectoorkrs are working &and flowing well.

It's a little extra work & time, but you'll be able to clean your intake, the fuel injection rail, injectors, and have everything new and performing when it's done. 30 years from now, you can have somebody else do it for you. :lick:

[sblake01]

Again, I Say Two Year Old Thread!

[bobs77]

"...if its got the stock fitting then you either have to take a grinder and grind through that without damaging the injector or buy a new one.''

I gotta take exception to this part too. What are the chances that using a grinder will not nick the injector body deep enough to cause a leak?

The FSM advises using a soldering iron to "cut" a slit in the injector hose, allowing you to pull the hose off the injector tail. I tried this but wasn't successful because of soldering iron issues. I ended upcutting a slit in the hose using a razor blade knife, cutting just deep enough to cut through the rubber and fiber of the hose.

Tomohawk has good advice--use this time to take the assembly completely off the car, replace all the hoses and clamps, and send the injectors off for cleaning. I had good luck with the shop at this site:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33554&item=7999420019&sspagename=rvi%3A1%3A3v_buy

Do the job once, not every time a hose springs a leak.