fruit bat Posted May 14, 2005 Report Share Posted May 14, 2005 Hi everyone, i am new to trials riding, and loving every minute of it, but have a question about my Montesa 315R 250cc 2003. When i decelerate i can hear a noise which sounds like lower end knocking, i am told it is because the mixture is too rich.... any ideas please??? Quote Link to comment Share on other sites More sharing options...
stuartc Posted May 14, 2005 Report Share Posted May 14, 2005 try giving Sandiford's (Burnley) a ring, Im sure they will be able to help you. Quote Link to comment Share on other sites More sharing options...
UpperLeft Trials Posted May 14, 2005 Report Share Posted May 14, 2005 I would try running at least 50% high octane race gas mixed with 50% premium pump gas. It should stop the knocking. The 315 Quote Link to comment Share on other sites More sharing options...
trialsurfer Posted May 15, 2005 Report Share Posted May 15, 2005 At sea level go to a 35 pilot. Quote Link to comment Share on other sites More sharing options...
hillary Posted May 15, 2005 Report Share Posted May 15, 2005 Before you do anything else, strip the silencer box and repack it, I had four, 315s and never a minutes trouble from any of them but they rely heavily on good exhaust packing, it's likely to make a big difference. Try that first, all it needs is roof insulation. Quote Link to comment Share on other sites More sharing options...
fruit bat Posted May 17, 2005 Author Report Share Posted May 17, 2005 Thanks for all the tips, i will let you know how i get on. Quote Link to comment Share on other sites More sharing options...
fruit bat Posted May 27, 2005 Author Report Share Posted May 27, 2005 (edited) Now using an eighty to one mixture and things have improved dramatically, THANKS everyone Edited May 27, 2005 by fruit bat Quote Link to comment Share on other sites More sharing options...
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