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Fuel restriction on 1972 Johnson 125 hp

L

luvthatsound40

New member
"My motor idles and runs at ha

"My motor idles and runs at half throttle great, but when I go to full throttle it will run for about 10 seconds then the engine starts jumping. Today I had my girl drive it while I checked the bulb in the fuel line and at full throttle it collapsed and the engine started bucking. Is the bulb bad or is it a problem with the fuel tank. I took the cap off the fuel tank to see if it was a vent problem and it still did it."
 
Take the pick up tube out of t

Take the pick up tube out of the tank and see if you have any blockage there. If not the start at the fuel tank and check the hoses real good if they are hard and brittle replace them and if they are soft and mushey then replace them. If your tank has a check valve on it where the line hooks up then it may be at fault.
 
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