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tylogans 22
08-08-2014, 11:35 AM
My gaffrig fuel pressure gauge has been working great until last weekend, now when I start it up it pegs to the right and then when I turn the boat off it returns to the off position or all the way to the left. I haven't had a chance to look around the motor I did crawl under the dash and all the wires looked tight.

Any comments would be appreicated.
thanks,
Gregg

BUIZILLA
08-08-2014, 12:16 PM
if it's a 1 wire sender, the sender is lost the internal ground

if it's a 2 wire sender, then the ground side is interrupted

Conquistador_del_mar
08-08-2014, 12:25 PM
if it's a 1 wire sender, the sender is lost the internal ground

if it's a 2 wire sender, then the ground side is interrupted

+1 I agree.

tylogans 22
08-08-2014, 03:09 PM
thanks- do you know where that sender might be located?

gcarter
08-08-2014, 04:16 PM
If electric fuel pump, the sender will be between the pressure regulator and carb.
If a mechanical fuel pump, between the pump and the carb.
If it's carbureted.

gcarter
08-08-2014, 10:13 PM
Here's the pressure regulator and pressure sender on the TR. The regulator is at the bottom of the blue hose, and the sender is screwed into the right side of it. Two wires are attached to it.

tylogans 22
08-11-2014, 09:10 AM
thank's George for the great information.:)