94 johnson 150 smell raw gas at low speed no leaks

[JBerg]

At slow speeds I keep smelling gas, but I've checked for leaks and found non. It does not seem to be running smooth at slow speeds. Ive had the carbs rebuilt, but still has not corrected the problem. Any suggestions?

 

[Joe Reeves]

Re: 94 johnson 150 smell raw gas at low speed no leaks

Checking for leaks........ Have you had the carburetor face plate off, then pumped the fuel primer bulb up hard? If not, do so to check the actual carburetor throat areas.

 

[SparkieBoat]

Re: 94 johnson 150 smell raw gas at low speed no leaks

maybe gas is leaking into your pulse line that goes to your fuel pump.

 

[JBerg]

Re: 94 johnson 150 smell raw gas at low speed no leaks

I bought this boat used and I did notice that the vro oil line has been disconnected and of course I have been mixing the oil/gas. I'm wondering if just the oil line being disconnected is all that has to be done, or does anything else needs to be done on the vro. Also the wiring connector is disconnected. Could any of this cause a problem. Thanks for any info.

 

[Joe Reeves]

Re: 94 johnson 150 smell raw gas at low speed no leaks

(VRO Pump Conversion To Straight Fuel Pump)
(J. Reeves)

You can convert the VRO pump into a straight fuel pump, eliminating the oil tank and VRO pump warning system, but retain the overheat warning setup (and fuel restriction warning if so equipped) by doing the following:

1 - Cut and plug the oil line at the engine so that the oil side of the VRO pump will not draw air into its system. Trace the wires from the back of the VRO to its rubber plug (electrical plug) and disconnect it.

2 - Trace the two wires from the oil tank to the engine, disconnect those two wires, then remove them and the oil tank.

3 - Mix the 50/1 oil in the proper amount with whatever quantity fuel you have. Disconnect the fuel line at the engine. Pump the fuel primer bulb until fuel exits that hose with the tint of whatever oil you used. Reconnect the fuel hose.

That's it. If you want to test the heat warning system to ease your mind, have the key in the on position, then ground out the tan heat sensor wire that you'll find protruding from the cylinder head. The warning horn should sound off.

 

[SparkieBoat]

Re: 94 johnson 150 smell raw gas at low speed no leaks

there is a line going from the fuel pump to your engine block...sometimes your fuel pump can leak and allow fuel in this hose...google VRO pump rebuild kit..if this is the problem