oil injection

pa. jet

Cadet
Joined
Feb 20, 2008
Messages
11
recently purchased 93 johnson 90 4cyln. jet. ran well on mixed gas. have oil tank and want to install. do wire leads route to controls? no visable connection at control. also can i test oil system to be sure it is operable?any input is appreciated. thanks
 

HighTrim

Supreme Mariner
Joined
Jun 21, 2007
Messages
10,486
Re: oil injection

Welcome to iboats.

Do you have a VRO2 or the OMS system? What are your reasons for wanting to re connect?

1 - Remove the plug for the oil line at the engine, re installing oil line. Trace the wires from the back of the VRO to its rubber plug and connect it for the electrical.

2 - Connect the two wires from the oil tank to the engine

Test the heat warning system by having 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.


This should help with testing

"http://www.boatpartstore.com/vro.asp"

Some more useful reading.

"http://continuouswave.com/whaler/reference/VRO.html"
 

pa. jet

Cadet
Joined
Feb 20, 2008
Messages
11
Re: oil injection

hi chris thanks for quick reply. do not know which syseem i have. no wires on pump. disconected 4 pin plug to silence alarm. 2 loose wires in motor 1 tan female 1 black male. could be for leads from tank? had a 50 merc jet for 10 years without a problem. i like the conveience. thanks agaim tom r.
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: oil injection

Wait - you say you have no wires on the pump but you unhooked a 4 pin connector to silence the alarm. Those 4 wires should go to the pump. Right?
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Re: oil injection

If the pump on the engine doesn't look like this, you don't the VRO pump. The oil tank does no good without a VRO pump.

P2140052.jpg
 

pa. jet

Cadet
Joined
Feb 20, 2008
Messages
11
Re: oil injection

double checked found wires thanks. also thanks to chris both sites very imformitive. do leads from tank go to 2 wires in motor? what do you think of this motor? j90jlets. thanks tom r
 
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