jdwez Posted April 6, 2010 Share Posted April 6, 2010 Can anyone give me some advice? For the 1st time I have developed an issue with the motor, a 1991 140hp Yamaha 2 stroke. Always run like a swiss watch with no problems at all. 1st work the motor has done since the service last week, returning from Long Reef, when I pushed the control down to power back to Sydney harbour the thing died after vibrating the whole boat ( Haines Hunter Centre Console ). It chugged along Ok at low revs ( 2000 ) but any sort of pressure and it would stall. After about 15mins of this it came good and I was able to motor in at any speed I chose. So I thought it may have been some moisture in the fuel. I stopped in the harbour to pick up a crab trap and when I went to power off it happened all over again, this time I was almost back to the ramp until I was able to give it full throttle without it stalling on me. Has any one wittnessed this from an engine of simailar age? Should I bite the bullet and re-power the boat with a new motor? Any advice welcome... Link to comment Share on other sites More sharing options...
Flightmanager Posted April 6, 2010 Share Posted April 6, 2010 Take it straight back ,and get them to find out why it is doing this . This could be a serious safety risk , if you need full throttle in a hurry and it dies..... Ross Link to comment Share on other sites More sharing options...
baldy Posted April 7, 2010 Share Posted April 7, 2010 Take it straight back ,and get them to find out why it is doing this . This could be a serious safety risk , if you need full throttle in a hurry and it dies..... Ross Im with Ross mate, take it back and get them to take a look. You never know when u need to gunn it Link to comment Share on other sites More sharing options...
chrisg Posted April 7, 2010 Share Posted April 7, 2010 Wonder if the right plugs were put in? C. Link to comment Share on other sites More sharing options...
wrxhoon1 Posted April 7, 2010 Share Posted April 7, 2010 At a guess without seen it I would say your mechanical advance gets stuck due to corrosion/ luck of use . The way to check it with engine off push the lever all the way down and see if the advance lever follows . Link to comment Share on other sites More sharing options...
jdwez Posted April 7, 2010 Author Share Posted April 7, 2010 At a guess without seen it I would say your mechanical advance gets stuck due to corrosion/ luck of use . The way to check it with engine off push the lever all the way down and see if the advance lever follows . The boat is back at the service centre in Carlton. Reckon you might be right about the throttle control, being almost 20 years old. I'll let you know what they coe up with today. Link to comment Share on other sites More sharing options...
Fester Posted June 26, 2010 Share Posted June 26, 2010 Hi, what was outcome with engine? im just bit curious. Link to comment Share on other sites More sharing options...
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