Fuel pump push rod broke or cam lobe flat??
10-18-2011, 06:58 PM
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Fuel pump push rod broke or cam lobe flat??
was running boat around 3000rpm and it acts like fuel tanks ran dry.Deffinatly has fuel, new mech. fuel pump, pulled fuel pump and the push rod for pump does not move up or down. Possiable broke rod or flat cam lobe. Cam might have 25 hrs.Boat will run with fuel poured in carb but wont pump fuel. Has anyone ever broke one of these rods??
10-18-2011, 07:58 PM
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I had the same thing happen to me. After 3500 felt like it ran out of gas. The cam has a liner over it and if it gets worn or cracked the rod wont make a full pass and cant keep up at high rpms. This is with fuel pump mounted on the sea water pump. Do you have a fuel pressure gauge? How does the gear lube look?
10-18-2011, 08:01 PM
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No fuel pressure guage, was running perfect and life was great then she died. Guess i will go with electric pump dont want to change cam for just fuel pump. Any other suggestions I'm alll for it
10-18-2011, 08:13 PM
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So do you have a block mounted fuel pump? If so is it possible the rod is stuck in the block in the raised position and not even riding on the cam at this point. Need to get the rod out to see what's going on. The rod may be bent.
10-18-2011, 08:17 PM
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Yes it is block mounted, thats what im going to do Sat. get that rod out and go from there. It moved freely when i installed pump, ran about 4 hours on it last sat. no problem it stoped on sun about 1/4 mile from the dock almost made it home
10-19-2011, 06:21 AM
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From another thread...
Billet Cams, must use a Bronze tipped fuel pump push rod.
Comp sells a bronze tip fuel pump push rod part # 249-4607
Good luck
Last edited by 1BIGJIM; 10-19-2011 at 06:24 AM.
