ive got a 1989 40 hp 4 cyl mercury; it cranks and runs fine, i have it hooked up to a 12 gal tank. when i run about 6 gallons through it it starts to skip at wot. i thought that possibly the pick up line in the tank was too short but it goes to the bottom of the tank, so that couldent be the problem. the bubble primes hard; if im driving and squeeze the bubble it doesnt change anything. if i put it in neutral and rev it up it runs fine for a minute but then starts skipping again. any ideas would be greatly appreciated.
