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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 1979C20 on December 15, 2010, 01:17:03 am

Title: in line fuel filter
Post by: 1979C20 on December 15, 2010, 01:17:03 am: When I rebuilt my engine, I forgot to put the steel fuel line behind the alt and smog pump, so I cut the steel lines and ran rubber from the pump to the carb. Well, I decided to add a fram in line filter to my hose for when I replace my carb. Hardly any fuel is in the filter. It still runs, but it really looks like it shouldn't. Its a new mechanical fuel pump. Yet, it doesn't look like its pumping. My friends 76 fills his in line filter. And so does my dads jeeps. Any thoughts?
Title: Re: in line fuel filter
Post by: Captkaos on December 15, 2010, 05:22:00 pm: It isn't supposed to be filled. There is nothing wrong.
Title: Re: in line fuel filter
Post by: 1979C20 on December 15, 2010, 10:26:20 pm: What about my dads jeeps and my friends truck? There's are pretty much full. Mine has barely any in the bottom of the filter, and I can see the fuel coming from the line. But, the fuel level no where near reaches the top fuel line to the carb.
Title: Re: in line fuel filter
Post by: 78 Chevyrado on December 16, 2010, 09:32:44 am: If it's mounted in a rubber hose you can hold the "to carb" end upwards to fill it more. If it's hard mounted there's nothing you can do but tip the whole truck. ;) It won't hurt anything like it is though. Mines not even 1/4 full and my truck runs fine up to 4500RPM. It used to bug me, but I've assimilated that as normal so I'm good now.
Title: Re: in line fuel filter
Post by: 1979C20 on December 16, 2010, 10:13:54 am: Well, its still running, so I'm not WORRIED about it. I'm just..... Perplexed? Why would 3 other vehicles fill their fuel filter and mine barely has any fuel?
Title: Re: in line fuel filter
Post by: Psycho71 on December 16, 2010, 06:22:50 pm: Easy fix for that........Get a filter you can't sent thru, then you'll never know how full it is. :P

Seriously though, all the clear filters I've ever seen on stock fuel pumps keep a lower level like you describe when mounted horizontally. When mounted vertically, they get full. Either way, like said above, as long as they keep the bowl on the carb full it's not an issue.
Title: Re: in line fuel filter
Post by: 1979C20 on December 16, 2010, 06:56:39 pm: Well, it is mounted almost vertical, and its practically empty.
Title: Re: in line fuel filter
Post by: 78 Chevyrado on December 16, 2010, 07:29:27 pm: That's weird ^^
Title: Re: in line fuel filter
Post by: 1979C20 on December 16, 2010, 07:36:23 pm: See what I mean?
Title: Re: in line fuel filter
Post by: 756man on December 16, 2010, 10:29:18 pm: If it is running fine, who cares if the filter is full of fuel ?
Title: Re: in line fuel filter
Post by: 1979C20 on December 16, 2010, 11:52:16 pm: Well, it bothers me. I have OCD. Hahaha.
Title: Re: in line fuel filter
Post by: VileZambonie on December 17, 2010, 10:07:19 am: Take a look at this picture and maybe this will make it easier to understand. It's normal to see the fuel filter partially full
Title: Re: in line fuel filter
Post by: Irish_Alley on December 17, 2010, 10:18:52 am: kind of what vile said but once it gets dirty it will rise lol and if you put it on upside down ::)