1962 mercury 85 hp fuel problems

sumrplumr

Recruit
Joined
May 15, 2007
Messages
2
I cant seem to keep my motor running.At first I had a portable gas tank.It would run good about half throttle.As soon as I give it full throttle .it would start to die.Sometimes I could pump up the ball,about every 3 minutes,then it would start to collapse the ball,then die.I replaced the diaframs,but it did'nt make any difference.Then I put in a different tank in the front under the bow.Installed the proper vent,and new ball,new three eights fuel line.Then when I take it out,it will go full throttle for about 2 min.then die.It would start right up everytime.But it would'nt even run at half throttle for more than about 2 min.Then I put a low volume (6 to 8 psi ) electric fuel pump.I got the same results.Can someone please tell me whats wrong?::confused:
 

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: 1962 mercury 85 hp fuel problems

When ever a hose bulb goes flat or starts to collalpaes there is a restriction beyond the bulb--pluged screen-vent-anti syphon valve,etc
 
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