Thread Tools Search this Thread
Old 14 November 2005, 15:51   #1
Country: UK - England
Length: under 3m
Join Date: Nov 2005
Posts: 7
Yamaha 200 Vmax

HI Guys,

Having messed around in various types of water in various types of boats, I decided to take the plunge and buy a Valiant Rib with a 200 V max early this year.

The engine has now developed a problem at Idle, whereby the revs drop to approx 500 and the engine appears to 'sneeze' and then stall. There appears to be no problem at the higher revs and I have lost no power / acceleration. All gaskets have been changed, Carbs stripped and cleaned and timing checked correct. After each 'sneeze' the engine starts perfectly well.

Any ideas as to the cause - severely scratching head now!



MIH is offline   Reply With Quote
Old 14 November 2005, 15:56   #2
Richard B's Avatar
Country: UK - England
Town: Berkshire and Devon
Make: Lodestar
Length: under 3m
Engine: Mercury 5hp
Join Date: Jul 2002
Posts: 5,015
Welcome to RIBnet. You may just find the answer to this if you do a search on "sneeze" as it's a symptom that's been discussed before.

Richard B is offline   Reply With Quote
Old 14 November 2005, 18:07   #3
Country: Denmark
Town: Copenhagen
Boat name: Nemesis
Make: CAPE 79
Length: 8m +
Engine: Suzuki 250 4 stroke
Join Date: Dec 2001
Posts: 252
Send a message via AIM to Rene Send a message via MSN to Rene

Welcome to Ribnet

I would think that this is just a matter of idle speed adjustment.

500 is a bit low for this engine, it should run around 750 - 800

Rene is offline   Reply With Quote

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

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 20:29.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.