Flappendectamy

[Sabre093]

I've got this problem....saw the pdf file on dissembly,not sure what I got to do to fix problem..

[Steve_in_Florida]

I've got this problem....saw the pdf file on dissembly,not sure what I got to do to fix problem..

Your question is rather ambiguous.

Is the problem that you saw the PDF, or

How is the issue manifesting itself. Does your FJ "sing" after a ride? If so, then you have to remove the little rubber flappers that are restricting the airway.

If not, then please restate your problem with a bit more detail.

Steve

[Sabre093]

It's dying like running out of gas...I am sure I need to do this and yes it sings too...I saw the pdf file on this but not sure what needs to be removed.

[Pat Conlon]

My money is on....either 1) Vacuum Petcock failing to stay open..or 2) a fuel line pinch from incorrect fuel line routing....

Do you have the rubber flappers on your '86? (I didn't on my '84)
The rubber flappers are on the '89+ fuel pump bikes. (I had them on my '92)

Regardless, if you have them, cut a pie shape notch out of the sealing surfaces or just remove them entirely.

[FJmonkey]

I am with Pat, my petcock failed and gave me all sorts of problems. I did the Flapectomy and unknowingly messed that up as well. After I gave my petcock the suck test...  , yes I said it.... I knew the petcock had a vacuum leak. After I replaced it, I still had issues...  Then at a West Coast Rally Randy got me sorted out and found my error. If you chose to remove the flaps, remove the entire white plastic piece that holds them. The V cuts will not work if you install the white plastic piece upside down... 

The Suck Test...
http://www.fjowners.com/index.php?topic=9787.msg95549#msg95549