Re: 574D fuel return check valve

Posted by JJK on April 02, 2005 at 21:06:59 from (216.189.131.171):

In Reply to: Re: 574D fuel return check valve posted by I can't use even my name on April 02, 2005 at 19:50:25:

I'm not claiming to know why they had a check valve on the return but my guess is probobly the design of the fuel tank. If the engineer was smart enough all they would have to have done was route the return to the top of the tank instead of the bottom and eliminate the check valve (most everything is designed that way now). For having a check valve in the feed line if you think about it, its impossible, fuel still needs to flow to the pump, thats why there is a petcock valve there. Now don't ask why there isn't one of those on the return because somebody could forget to open it up and now we're back to putting fuel into the crankcase. Hope this makes a little sence and perhaps you can debate this one over a cup of coffee and the local cafe.

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