When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I saw a member posted a thread called "fuel line help for a dumbass". I believe I have him beat. I can't understand why so called Corvette parts won't fit together.
As you can see in the first 2 pics, my fuel filter is way off the manifold (over 2").
In the third pic it's more obvious.
In the last pic, the male side of the 90 degree fitting doesn't screw into the female side of the filter fitting. The sizes are not the same.
I spent more time staring at it and scratching my head than I did putting the whole motor together. WTF am I doing wrong? Should I have just used rubber hose? Please help me.
The GF-90 fuel filter does not 'float free' .. there is a bracket that holds it up some so that will help a little.
That AFB spacer is what is on my carb too.
The line coming straight out of the carb with the bend in it is backwards...look at the arrow in my picture; try reversing it.
You do not have the proper 45* fitting in the front of the carb for the fuel line to attach to; see the red circle in my picture.
You should NOT have the 45* fitting on the front of the fuel filter...it belongs on the front of the carb
Next, the fittings at the forward end of the fuel filter are all wrong too....see my second "blown up" picture.
That fliz in the green circle in your picture shouldn't be there...
Finally, that doesn't look like the correct GF-90 fuel filter -- there are several things hinkey about it....that sure ain't helping...
No offense, but you aren't the guy that did the plumbing on my house by any chance. If so, I want to talk to you
Last edited by Frankie the Fink; 04-15-2015 at 06:55 PM.
Mel, no that is not the original spacer. There was none when I got the car. I saw a thread here that said it was necessary to keep the carb from overheating. Do you know how thick it should be? Maybe I have the wrong one.
Frankie, the filter does have a bracket on it but it comes nowhere near the stud on the manifold. Also, if I turn the line from the carb around, I don't have any 90 degree fittings that fit into the 1/8" fitting that screws into the filter. I'm having trouble finding something online and I'm also unsure of the size I should be looking for.
I'm gonna go out to the garage and turn it around to see if it helps.
Thanks, the pictures are a big help but I still need the right fittings.
Mel, no that is not the original spacer. There was none when I got the car. I saw a thread here that said it was necessary to keep the carb from overheating. Do you know how thick it should be? Maybe I have the wrong one.
Frankie, the filter does have a bracket on it but it comes nowhere near the stud on the manifold. Also, if I turn the line from the carb around, I don't have any 90 degree fittings that fit into the 1/8" fitting that screws into the filter. I'm having trouble finding something online and I'm also unsure of the size I should be looking for.
I'm gonna go out to the garage and turn it around to see if it helps.
Thanks, the pictures are a big help but I still need the right fittings.
Here is the assembly manual drawing for the setup (you may have that carb line right after all, not 100% sure on that, but my other advice still goes):
Last edited by Frankie the Fink; 04-15-2015 at 07:05 PM.
Looks like all you need to do is follow Frankie's advice on flipping the line from the carb to the filter and adding a 90 degree fitting onto the end of that line. If you look at your 3rd pic, remove the fitting in the green circle and that 90 degree fitting fit into the filter.. In fact if you take that 90 degree fitting off and take it to your local auto parts store they can match it with another one and you should be good to go.
Frankie, your car looks like the assembly manual but when I took all the pieces and tried putting them together they just aren't right.
That's a GF90 AC/Delco filter from Corvette America. It has 1/8" female threads on both sides. Without that "fliz" there's no way to connect the other lines to the filter.
The diagram you posted is a help. Like you said, after just trying to switch it, it did no good.
Don, you're saying if I can get a 90 degree fitting with a 1/8" male end to thread into the filter I might be on to something.
I'll look at Zip for the parts and let you guys know how it turns out.
Thanks to all.
BTW, I didn't do the plumbing at your house Frank but if you need me I'm just a couple key strokes away.
So...I ordered a new fuel line from Long Island Corvette. Frankie was right to say that the fitting in the carb is the wrong one. Not only that but the 90 degree elbows were the wrong size as well. They did not fit the GF90 filter, which has the 1/8" threads. I have everything dry fit and tomorrow I'll get the correct inlet fitting and move on.
Thank you all who helped out. Your experience is what guys like me look for when we screw up.
04-15-2015, 02:55 PM
Fuel line fitment
