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Hey guys, Working on a fuel pump on my 1975 corvette. The 90 degree outlet fitting won't match up directionally with my lines nor my AIM. When tightened its loose until it bottoms out and at that point its facing the ground. Is it possible that the fuel pump is wrong? were there different fuel pumps that located those 90 degree fittings facing downwards?
If i got another type of 90 degree adapter would i be able to locate the outlet in the direction i want (stock)? Or is that determined by the pump threading?
Image of proper direction. Mine faces towards the ground and wont match up.
Here's an image from another thread of the proper direction.
Last edited by NothingSpecial; Feb 10, 2017 at 01:30 PM.
Hi ns,
The same fuel line was used for q-jet equipped 350 engines from 70-76.
The same elbow fitting was used for those years too.
Is the threaded end of the fitting bottoming out in the pump, or is the 'shoulder' of the fitting tightening against the pump?
Regards,
Alan
Hi ns,
The same fuel line was used for q-jet equipped 350 engines from 70-76.
The same elbow fitting was used for those years too.
Is the threaded end of the fitting bottoming out in the pump, or is the 'shoulder' of the fitting tightening against the pump?
Regards,
Alan
Are you sure you have the correct elbow fitting?
Sorry it took me so long to get back. Seems like the fitting base is bottoming out in the pump, not through the threads. It's a corvette fitting, that's for sure.
My 1/4npt - an6 fitting seals on the threads (HandTight) in just the orientation i want and I'm afraid the taper on it will force it to seal and stick in a place i DONT want it to if i tighten any further. Is it safe to just use thread sealer there and call it a day or should i try to give it one more rotation?
Hi,
I think I'd try the sealer.
If your sense is that the fitting is bottoming out in the pump I think you could easy damage the threads if you try to tighten further.
I'm wondering why yours is bottomed out but the fitting in the photo seems to still show more threads?
Regards,
Alan
Since the 1/4 npt part of the fitting is tapered and bottoms out, it needs to go deeper to seal on the threads. You could try replacing the fitting with new and see if it tightens up before it bottoms out, definitely use sealer or a small amount of thread tape. Another option, in case the female part of the pump is not deep enough is to file off the end of the npt part of the fitting so it will won't have to go as deep to tighten up, file it off to the first thread. NPT fittings seal on the threads, so it has to be tight, don't depend on the sealer to hold with a fitting not tight. The tape or sealer merely acts as a lubricant so the fitting can be tightened enough to seal.
This is the fitting you need, probably available at the local auto parts store.
Hi,
I think I'd try the sealer.
If your sense is that the fitting is bottoming out in the pump I think you could easy damage the threads if you try to tighten further.
I'm wondering why yours is bottomed out but the fitting in the photo seems to still show more threads?
Regards,
Alan
Photo was from the net for parts reference. It was raining cats and dogs yesterday and I didn't want to go out into the rain to get a photo of the thing. Will take one today when it clears up.
@ 75. I didn't actually think about filing off the thread to change its orientation. Great idea! The fitting i have is definately corvette. I have a new one I'm going to throw in there later when the weather clears up.
Yes, I know I'm bumping an old thread and this forum doesn't like that. However, my question is fairly relevant.
Is there a special tool needed to get the 90 degree fitting off of the fuel pump while the pump is on the car? I have an '80 and am having trouble getting any pliers or wrenches on it to remove. Thanks.
Fuel pump fitting
