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#1
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Sounds to me like there is some sort of fuel restriction. It may be a collapsing fuel line, which has become quite common with this ethanol gas. Check all the lines and if possible, run it off a seperate (5 gallon) fuel tank to see if you get the same restrictions.
__________________
1987 V20 1996 Jonhson 150 OceanRunner 
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#2
03-20-2011, 02:45 PM
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Quote:
__________________
1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer 1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer 1996 V21 w/1993 200HP Mercury on a Shoreline Trailer All towed by a 5.7L Hemi Durango. If God didn't have a purpose for us we wouldn't be here, so Live simply, Love generously, Care deeply, Speak kindly. (Leave the rest to God)  Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless.
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#3
03-20-2011, 09:38 PM
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im no expert but it sounds like the fuel pump is sucking air from somewhere i would put a fuel pressure gauge and check fuel pressure
could be a seal on the fuel system from the tank to the fuel pump not sealing not sure if your tank has a screen on the fuel pick up and sometimes when replacing fuel fiters dirt can get in the fuel line check the fuel pump may have dirt in the one way valves
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#4
03-20-2011, 10:18 PM
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Process of elimination, run it off a portable tank as posted, disconnect it from the top of the current fuel tank. Connect this hose to the portable tank if all is well its the fuel pickup strainer in the tank or the anti siphon valve on top of the tank.
You mentioned 60:1 mix it should be 50:1 Typo? You ran this motor perfectly before so I don't this its anything to do with the disconnecting the vro ... Be careful not to run it at WOT with a fuel starvation you will blow the power head ...
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#5
03-21-2011, 03:10 PM
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awthacker, please refresh my memory.
I had it in my mind you had cleaned the tank, replaced the fill hose and the fuel lines to the motor and added the water separator prior to or during your repower.
__________________
 '75 Cuddy with '00 Johnson Ocean Pro 150 horse Benny
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#6
03-21-2011, 03:18 PM
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There was a thread a couple of years ago when Hammer had this same problem.
His ball would get soft and he'd have lefty squeeze it and it would get hard again. LOL!!  Where's old Hammer been? I miss him. 
__________________
1985 Wellcraft V-20, Evinrude ETEC 150: SOLD 1979 Marine Trader 44, twin Ford Lehman 120s 2006 Panga 14, Tohatsu 20
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#7
03-21-2011, 08:40 PM
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Quote:
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#8
03-21-2011, 08:47 PM
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Today I reconnected the VRO wiring harness, replaced the primer bulb, and bypassed a fuel shut-off valve. I brought along a 6.6 gal pony tank. The boat idled nicely through the no wake zone, then planed up nicely before dying out back to idle speed while at 3/4 throttle. My buddy pumped the bulb and it picks up again. We switched to the pony tank and have the same problem. Tomorrow I'll inspect the fuel pump for blockage.
Last edited by awthacker; 03-21-2011 at 08:58 PM.
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