Anti siphon valve
Printed From: CorrectCraftFan.com
Category: General Correct Craft Discussion
Forum Name: General Discussion
Forum Discription: Anything Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=48878
Printed Date: March-05-2025 at 10:35pm
Topic: Anti siphon valve
Posted By: onebigdog
Subject: Anti siphon valve
Date Posted: June-17-2020 at 9:52pm
| I am redoing the fuel system on my 72 Mustang because the motor acts like it is starved for gas when I am running it hard. I believe there is what is called an anti-siphon valve on top of the gas tank that feeds the fuel line. I can't believe how difficult it is to manually open this check valve. Is it supposed to take extreme force to open this valve? Will any part work as a replacement or is it tuned for the specific fuel pump? I am considering running the boat without it to see if this is the problem but don't want to discard a perfectly good check valve if that is the way it is supposed to work. Any insight is appreciated! |
Replies:
Posted By: 8122pbrainard
Date Posted: June-17-2020 at 10:34pm
|
Sean, There's no "opening and closing" of the anti siphon valve. It's simply a ball check inside the body. Maybe someone put an actual valve on your tank? Post a picture. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: 8122pbrainard
Date Posted: June-17-2020 at 10:48pm
Anti siphon valve: ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: onebigdog
Date Posted: June-18-2020 at 1:36pm
| This is indeed the item in question. If I push on the bottom tappet with a small pin, it takes quite a bit of force to move it. Is that correct? I guess I can go ahead and replace it. |
Posted By: 8122pbrainard
Date Posted: June-18-2020 at 1:41pm
"bottom tappet" ?  ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
onebigdog wrote:Posted By: KENO
Date Posted: June-18-2020 at 3:18pm
OBD
Don't mind Pete's reply, if you don't speak in Pete terms he'll question your terminology and act like he doesn't know what you're talking about. The little whatever you want to call it opens pretty easily with a small amount of pressure from a little screwdriver, toothpick or whatever else you may want to push on it with and the spring reseats it when you let up. Here's an old thread with some information about anti siphon valves and their ratings to help you decide what to get for your application if you decide a new one is needed.  http://www.correctcraftfan.com/forum/forum_posts.asp?TID=33884&title=anti-syphon-valves" rel="nofollow - link |
Posted By: 8122pbrainard
Date Posted: June-18-2020 at 3:56pm
Ken, Please explain to me what he's referring to and what a "bottom tappet" is. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: onebigdog
Date Posted: June-18-2020 at 10:13pm
| Thanks guys. I am just going to replace it. I'm surprised the fuel pump can create enough vacuum to even open this thing. It is super hard to compress the spring. I can't image how it would fail in this manner. |
Posted By: KENO
Date Posted: June-18-2020 at 10:56pm
If you can't figure out what he meant by what's already been written Pete, it would be a waste of my time and effort trying to explain it
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Posted By: KENO
Date Posted: June-18-2020 at 10:58pm
Good move
|
Posted By: Orlando76
Date Posted: June-18-2020 at 11:30pm
Ok Pete, I’ll take a stab at it. A priest and a rabbi are drinking at a bar and in walks Honor Blackman. Priest says to rabbi “I’d bottom tappet” Or it’s most likely the ball inside the valve? ------------- Please support The Cystic Fibrosis Foundation 1976 Ski Nautique 351 Escort 1993 Ski Nautique purple and black 351 HO PCM |