Go Back   RIBnet Forums > RIB talk > Engines & props
Click Here to Login

Reply
 
Thread Tools Search this Thread
 
Old 13 April 2007, 11:09   #1
Member
 
Country: UK - England
Town: Gloucestershire
Boat name: Osprey
Make: Osprey Vipermax
Length: 5m +
Engine: E-tec 300 G2
MMSI: TBC
Join Date: Dec 2006
Posts: 4,021
Johnson 90 cold starting problem

I have just had a few days in Cornwall and the engine performed really well and did not miss a beat all the time we were out. However in the mornings after the boat had been outside all night in the cold it was a real pig to start and took 7 or 8 long blasts on the starter to get going. I have recently changed all the plugs and fuel filter so know those are not to blame.

I have been pressing the key in as I turn it in case anyone thinks of that.

Any ideas?

Chris
__________________
Chris is offline   Reply With Quote
Old 13 April 2007, 11:28   #2
Member
 
Country: Other
Town: Stanley, Falkland Is
Boat name: Seawolf
Make: Osprey Vipermax 5.8
Length: 5m +
Engine: Etec 150
Join Date: Mar 2006
Posts: 3,726
Mine has the "press the key in" thing - but I don't really know what it does, I just know it doesn't start without it. Must be some sort of auto choke I guess - maybe it is broken or even a simple wiring/switch fault?
__________________
A Boat is a hole in the water, surrounded by fibreglass, into which you throw money...

Sent from my Computer, using a keyboard and mouse
BogMonster is offline   Reply With Quote
Old 13 April 2007, 12:09   #3
Member
 
Country: USA
Town: boston
Boat name: Miss bad 61
Make: Crapko, AKA Mako
Length: 5m +
Engine: OMC Mod50
Join Date: Apr 2006
Posts: 398
did ya pump the bulb first in the line? sounds like there was no fuel for it.
__________________
fast fred is offline   Reply With Quote
Old 13 April 2007, 12:38   #4
Member
 
Pete7's Avatar
 
Country: UK - England
Town: Gosport
Boat name: April Lass
Make: Moody 31
Length: 9m +
Join Date: Aug 2001
Posts: 4,951
Quote:
Originally Posted by BogMonster View Post
Mine has the "press the key in" thing - but I don't really know what it does, I just know it doesn't start without it. Must be some sort of auto choke I guess - maybe it is broken or even a simple wiring/switch fault?
Correct operates a soleniod on the chokes. There is a manual over ride if you take the engine cover off, then you will see the little plastic widget to turn to engage the choke manually.

Pete
__________________
.
Ribnet is best viewed on a computer of some sort
Pete7 is offline   Reply With Quote
Old 13 April 2007, 12:48   #5
Member
 
Jizm's Avatar
 
Country: UK - England
Town: Southampton
Boat name: Hissing Sid
Make: Ross Smith Cobra
Length: 6m +
Engine: 200HP Optimax
MMSI: 235038046
Join Date: Jun 2002
Posts: 3,804
Quote:
Originally Posted by Pete7 View Post
Correct operates a soleniod on the chokes. There is a manual over ride if you take the engine cover off, then you will see the little plastic widget to turn to engage the choke manually.

Pete
Mine has the same thing, the solenoid is duff so is a bit of a pig from cold.
PS. No more than 5 sec bursts on the starter or damage may occur.
Jizm is offline   Reply With Quote
Old 13 April 2007, 13:11   #6
Member
 
Country: UK - Scotland
Make: Ribcraft
Length: 5m +
Engine: 90hp
Join Date: Aug 2006
Posts: 380
you should hear a good solid click when you press the key in (listen without turning key to operate starter). If it's not distinctive, it may be that the choke lever has jammed so it's not moving the plates on the carbs (making it hard to start). Take the cover off and have a good look with someone else pressing key in. Solednoid is usually connected to bottom or middle carb with a link lever to operate the choke flap on all carbs simultaneously.

I've had 2 problems to date:

(1) On old engine one of the plates was ceased and therefore stopped the chocke operating (actually it seased shut so choke was fully applied at all times)

(2) The tube from the oil reservoir got jammed inbetween the thottle link bar and choke link bar so as soon as choke was set, it jammed.

=> check it all moves freely and nothing is jamming it :-)

Good luck.
__________________
al40 is offline   Reply With Quote
Old 14 April 2007, 07:03   #7
Member
 
Country: UK - England
Town: Gloucestershire
Boat name: Osprey
Make: Osprey Vipermax
Length: 5m +
Engine: E-tec 300 G2
MMSI: TBC
Join Date: Dec 2006
Posts: 4,021
Sorted

I had a look last night and realised that you really need to push the key up very firmly to get the solenoid to click in, I just wasnt doing it hard enough.

Chris
__________________
Chris is offline   Reply With Quote
Old 15 April 2007, 12:49   #8
Member
 
Country: Other
Town: Stanley, Falkland Is
Boat name: Seawolf
Make: Osprey Vipermax 5.8
Length: 5m +
Engine: Etec 150
Join Date: Mar 2006
Posts: 3,726
Quote:
Originally Posted by Chris1573 View Post
I had a look last night and realised that you really need to push the key up very firmly to get the solenoid to click in, I just wasnt doing it hard enough.

Chris
Any cheap fix is a good one
__________________
A Boat is a hole in the water, surrounded by fibreglass, into which you throw money...

Sent from my Computer, using a keyboard and mouse
BogMonster is offline   Reply With Quote
Reply


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




All times are GMT. The time now is 15:26.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.