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can any one out there tell me what the problem is , up to 3.000 revs engine is OK ,but after that when a try more power it starves for fuel and all most stops if i pull the choke out a bit it is a bit better it runs OK a 3,000 rpm and will for a good while. could it be the petrol pump ? i have had new diaphragms in the pump but not a new pump. there is new spark plugs and caps . engine is about 1990 on 50'1 petrol oil mix . Yamaha 115 v4 engine .
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can any one out there tell me what the problem is , up to 3.000 revs engine is OK ,but after that when a try more power it starves for fuel and all most stops if i pull the choke out a bit it is a bit better it runs OK a 3,000 rpm and will for a good while. could it be the petrol pump ? i have had new diaphragms in the pump but not a new pump. there is new spark plugs and caps . engine is about 1990 on 50'1 petrol oil mix . Yamaha 115 v4 engine .
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clean your carbs.
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