1989 rude xl 150 vro pump

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dog1aero

Recruit
Joined
Aug 18, 2004
Messages
1
I just bought this boat and motor which has been sitting for 2 years. It was working fine when it was parked.I have been told to unhook the vro oil section of the pump and mix the gas. Are these pumps reliable aas I do not want to burn the motor up? Any suggestion as to what I should do before putting this in the water. Dog1aero
 
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marinemech

Petty Officer 1st Class
Joined
Aug 12, 2004
Messages
250
Re: 1989 rude xl 150 vro pump

dsconnecting oil side of pump is easy 1 disconnect oil feed hose and plug fitting 2 disconnect wire harness coming out of vro pump 3 mix fuel 50:1 25:1 if high preformance<br />if you want to leave oil system on 1 check filter in tank 2 fill oil tank up 3 run moter on 50:1 until you are sure pump is working 4 run on straight fuel<br />vro systems are reliable but require maintance ie check filter hoses etc because you can disconnect it without harming moter thats what i would do<br />because if it screws up you burn out power head
 
B

Brew2

Chief Petty Officer
Joined
Jan 12, 2004
Messages
427
Re: 1989 rude xl 150 vro pump

Do a search on "VRO". You will have enough material and opinions to keep you reading for weeks.<br /><br />I personally like the VRO system as it has served me well with no problems. <br /><br />Cheers.
 
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DJ

Guest
Re: 1989 rude xl 150 vro pump

I personally like the oil injection. You can upgrade to the newer "four wire" system for about $250.00. It comes as a kit.<br /><br />In the meantime, do this.<br /><br />1. Remove the oil tank and dump it out.<br /><br />2. Replace the pick up tube screen.<br /><br />3. Refill with TCW-3 rated oil.<br /><br />4. Reprime.<br /><br />5. Mark a line on the tank so that you can watch oil useage.<br /><br />6. Pre mix at 50:1 ratio until you verify oil useage.<br /><br />The oil injection systems have been blamed for many problems they did not cause. They are VERY reliable, if maintained.
 
Z

zantz

Seaman Apprentice
Joined
Aug 24, 2004
Messages
49
Re: 1989 rude xl 150 vro pump

DJ, is the 4 wire system electric or does it run off the intake?
 
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DJ

Guest
Re: 1989 rude xl 150 vro pump

Zantz,<br /><br />The four wire just adds a "smarter" alarm system.
 
Z

zantz

Seaman Apprentice
Joined
Aug 24, 2004
Messages
49
Re: 1989 rude xl 150 vro pump

Since I had mine off while doing the rebuild I took a closer look at it. Being an electronics wiz I figured it out.<br /><br />1 wire is positive voltage<br />2 is ground<br />3 is to the alarm buzzer<br />4 is input from the tach<br /><br />#4 is so the alarm won't sound unless it's running at a certain RPM<br /><br />Thanks DJ
 
S

seahorse5

Rear Admiral
Joined
Jan 24, 2002
Messages
4,698
Re: 1989 rude xl 150 vro pump

Zantz,<br />The gray tach wire is used to monitor the rpm and compare it to the number of oil pressure pulses of "VRO" pump. The alarm can sound at ANY rpm should the electronics on the back of the pump determine that there are not enough oil pulses for the rpm.
 
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