Reply
 
Thread Tools Search this Thread
 
Old 12 December 2002, 18:10   #1
Member
 
Country: UK - Isle of Man
Town: Douglas Isle of Man
Make: Osprey
Length: 5m +
Engine: Suzuki 70hp 4 stroke
MMSI: 235035776
Join Date: Dec 2002
Posts: 288
Oil mix - Johnson 70 VRO

Hi experts!

I have a 1988 Johnson VRO 70.

It runs very nicely but does make a lot of white smoke. The VRO has been disconnected and the previous owner advised me to mix oil/unleaded 1:50.

Is this too high....or should I have a 'starting tank' with 1:50 and a 'running tank' with say 1:100?

Any thoughts/

Jon
__________________

__________________
whitingiom is offline   Reply With Quote
Old 13 December 2002, 09:12   #2
DM
RIBnet supporter
 
Country: UK - England
Boat name: Little Wing
Make: Searider 5.4
Length: 5m +
Engine: Tohatsu 90
Join Date: Aug 2002
Posts: 1,067
I wouldn't consider myself an expert as I've broken more engines than Eddie Irvine. However, for what its worth, the VRO was designed to deliver a variable amount of oil according to engine revs. For some reason, probably reliability issues, a lot of people chose to disconnect this function. I ran a VRO50 on a 4metre Avon and the oil supply had been disconnected by a previous owner. This also blew out white smoke which made me think it was running lean. I noticed that the oil feed pipe into the carb,which had been disconnected from the VRO supply in the fuel tank, was not blanked off. When this was done, the engine ran a lot smoother, started easier and had a blueish tinge to the exhaust smoke. This was then run on a permanent mix of 50/1 with no problems.

HTH

DM.
__________________
DM is offline   Reply With Quote
Old 13 December 2002, 16:40   #3
Member
 
Country: UK - Isle of Man
Town: Douglas Isle of Man
Make: Osprey
Length: 5m +
Engine: Suzuki 70hp 4 stroke
MMSI: 235035776
Join Date: Dec 2002
Posts: 288
Thanks David

I'll have a look tomorrow.

Jon
__________________
whitingiom is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 08:32.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.