Was 1986 a good year for johnson motors

kiwi karl

Cadet
Joined
Oct 3, 2004
Messages
6
I have just brought a 1986 90hp vro johnson outboard the compression was good and seem to run great,it even came with the original tach and speedo service manual that have never been used.<br /><br />my question is, was there any problems with this years,and any thing on the motor that would need attention in the future that may give me problems.
 

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,862
Re: Was 1986 a good year for johnson motors

The vro unit was prone to failure. If it was upgraded to the vro-2 unit, it is better. If vro unit fails, you've got trouble.<br /><br />I would disable vro and mix the fuel manually.
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: Was 1986 a good year for johnson motors

hello<br /> after almost ten years change the VRO.<br /> it wears out.<br /> it does not live forerver.<br /> clean the oil tank install new t-stats and water pump.<br /> I hear a lot about VRO failures but on a well maitained rig since the VROII came out in about 86 or 87 I have never seen a "VRO" failure. I have seen a lot of failures due to lack of maint and the alarm horn is bad and the operator ran it until it just quit. I have seen more failures due to improper pre-mix than all manufactures oil injection combined. test your alarm system periodically.<br /> course I have only done this for about 30 years.<br /> good luck and keep posting
 

Jack Shellac

Lieutenant Commander
Joined
Aug 7, 2002
Messages
1,661
Re: Was 1986 a good year for johnson motors

This V-4 was a very good motor and almost bullet-proof if maintained correctly. I'll echo the comments about the VRO. During this period, even the Coast Guard was disconnecting the VRO and going to pre-mix on their motors. It was notoriously undependable.
 
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