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Old 15 August 2007, 15:08   #11
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Country: UK - England
Town: southampton
Make: ribcraft
Length: 7m +
Engine: 230 diesel jet
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try using BUHW plugs they seam to run cooler & give a better tick over
also check the carb butterflys are all shut at tick over or it cause all two strokes to cough
this was a very comon problem on 1980-1999 engines
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Old 15 August 2007, 15:51   #12
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Firstly, check the carbs are Synchronized, if not they backfire on tick over. Causes damage to your fuel pump diaphragms and will melt the plastic pulse pipe outlet from the block.


Each carb has a adjustment srew (philips head) with the engine at tick over or siwtched off, undo each screw so the butterfly is loose. Then push the link rod down so all the butterflys are shut, then do the three screws up tight again. Make sure the center carb has a very small gap between the roller and the cam, as this is your pick up timimg.
Easy as that.
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Old 15 August 2007, 19:49   #13
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Quote:
Originally Posted by Turbodiesel View Post
Firstly, check the carbs are Synchronized, if not they backfire on tick over. Causes damage to your fuel pump diaphragms and will melt the plastic pulse pipe outlet from the block.


Each carb has a adjustment srew (philips head) with the engine at tick over or siwtched off, undo each screw so the butterfly is loose. Then push the link rod down so all the butterflys are shut, then do the three screws up tight again. Make sure the center carb has a very small gap between the roller and the cam, as this is your pick up timimg.
Easy as that.
will check this as i think this maybe the problem as i had a cdm module fail on me at the end of last season and i thought it was a carb problem so i removed them and cleaned them all ,so maybe knocked the adjustment out a little bit.
thanks again for all your advice
andy
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