gp fuel problem

[DANNY07]

hi all i had a problem with gp today every time i put my foot on the gas she would hold back and cut out at times this would happen on hill when i wanted more out of her, when she cut out i found if you primed the pump she would go longer be for cutting out or just holding back, have any one had this problem or any ideas

[echelon1]

A friend of mine that owns a GP had a similar issue.
It turned out that the fuel line clogged.
The GP has a flat fuel tank, and the fuel line is conected directly on the bottom of the fuel tank.
Any dirt will fall in the fuel line and restrict fuel flow to the filter and pump.
My advise is to disconect the fuel line at the carb, and manually pump the primer lever with the engine turned to the point full strockes are possible. (cam lobe for fuel pump down)
The fuel should squirt out of the line each strocke from the primer lever, and you should be able to pump at least 1 quarter of fuel without experience any mis or poor squirts.
If no good fuel squirt's, undo the fuel line from the bottom of the tank and also from the inlet port of the fuel filter.
Blow it through with air pressure.
Use a 3 way conector, and install a small sediment on one side of the conector, and screw the oposite side in the fuel tank.
The third hole is for the fuel line.
Modifie the fuel conector port that screws in the fuel tank with a small stand up pipe that comes about 2 inches above the bottom of the tank.
The fuel pipe is peened close above, and small holes drilled in the shanck from the stand up pipe over the totall lenght and radius.
This prevent thick dirt from clogging the lines and small dirt sinks into the sediment bowl.
It is a very rewarding mod for the GP.

Gindi.

[DANNY07]

Gindi sounds good to me i will have a look at pipes, but yes the mode is a must i think Danny

[Jacco]

Because of this construction, installing a slightly thicker fuel line will help preventing this problem in the future.
If I remember correct.....original diameter is not that thick.

Good luck.

Jacco

[DavidA]

Wasn't a hot day and caused by vapor lock was it?

VAPOR LOCK Wikipedia

[DANNY07]

i think not it dont get that hot in the uk, but it do look like the problem was the fuel line, after a good clean the gp went ok on all the hills i had trouble with, just need to get the right parts to add that mode in the fuel tank

[Jacco]

Since our drive in Anzio with the GP Dave ....I do not think a GP is going to get vapor lock soon.
Also on the highway to Rome,...it must have been 35degrees minimum. Nos problemos for the good old GP

[DavidA]

It was very hot...no vapor lock. Your GP ran like a purring kitten and fast as a cheetah until it hit a hill.