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partsbob67 · 10-20-2015, 08:38 PM

here we go. 89 mustang 5.0 stocker. changed from the stock tank and lines to a fuel cell and an external pump. starts breaking up at 4500 ever since. the only thing I haven't replaced is the mass air flow meter and the cell. it's an 4 gallon aluminum cell. no foam. --10 line from tank to the pump. -8 line up and back. I change over to a 4bbl intake and carb and it runs great. any ideas. i'm to the point where i'm ready to put the stock tank back in.

10-20-2015, 08:38 PM	#1
partsbob67 Member Join Date: Apr 2005 Location: rohnert park,ca Posts: 414 Likes: 11 Liked 79 Times in 11 Posts	starts breaking up at 4500 rpm. here we go. 89 mustang 5.0 stocker. changed from the stock tank and lines to a fuel cell and an external pump. starts breaking up at 4500 ever since. the only thing I haven't replaced is the mass air flow meter and the cell. it's an 4 gallon aluminum cell. no foam. --10 line from tank to the pump. -8 line up and back. I change over to a 4bbl intake and carb and it runs great. any ideas. i'm to the point where i'm ready to put the stock tank back in. __________________ bob beals 7244