aye sparticus Posted April 7, 2008 Report Share Posted April 7, 2008 Hi i have a 06 Gas GAS 250 use 50:1 mix with no problems but have noticed yesterday that the exhaust fumes seemed very white(so much so i thought there had been a new pope elected) havent done anything different water ingress somewhere?? clean with a power washer but always careful round wheel bearings and engine casings mix to rich/weak? any help would be great it isn't having any effect on the performance of the bike but hate to ignore it incase it's something that could cause problems later Quote Link to comment Share on other sites More sharing options...
lewis_gasgas Posted April 7, 2008 Report Share Posted April 7, 2008 I run my Gas Gas on about an 80:1 mix might be all it is try it. Quote Link to comment Share on other sites More sharing options...
martinm Posted April 7, 2008 Report Share Posted April 7, 2008 Have you checked your coolant levels.....might be a head gasket problem. Quote Link to comment Share on other sites More sharing options...
kinell Posted April 7, 2008 Report Share Posted April 7, 2008 White smoke suggests that water is getting into the top end, head gasket could be at fault? PS. It was cold yesterday, it wasn't just condensation was it! Quote Link to comment Share on other sites More sharing options...
aye sparticus Posted April 9, 2008 Author Report Share Posted April 9, 2008 After experiencing some white/smokey exhaust fumes at the weekend i decided after some advice from this board to check for water ingress on taking the plug out it looks well oily and fouled ...so before i start taking the rest apart it looks like my mix is to rich using pre mix at 50:1 been advised 80:1 also seen 66:1 mentioned as the correct mix ???????? The bike is a Gas Gas pro 250 2006 model so what mix do you use and what brand of 2 stroke premix is the least smokey any advice from the good people of the forum much appreciated Ali Quote Link to comment Share on other sites More sharing options...
mrgas Posted April 9, 2008 Report Share Posted April 9, 2008 have you accidently got your exhaust packing wet whilst jet washing ? does it run ok ? Quote Link to comment Share on other sites More sharing options...
aye sparticus Posted April 9, 2008 Author Report Share Posted April 9, 2008 have you accidently got your exhaust packing wet whilst jet washing ?does it run ok ? Yeah it runs fine this may be a possibility the kids were "helping" me to clean the bike on Sunday but also on the premix ratio 50:1 maybe a bit rich what do you think/use/advise??? Quote Link to comment Share on other sites More sharing options...
grindrod Posted April 9, 2008 Report Share Posted April 9, 2008 Repsol Synthetic is pretty well smoke free!! But if the plug and piston are very oily and there was very visible white smoke then it could be gearbox oil being sucked in past a worn crank seal on the primary drive side, is the gearbox oil level dropping? Have you definitely ruled out condensation due to very cold weather? Hope this helps! Martin Quote Link to comment Share on other sites More sharing options...
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