a0592 Posted May 12, 2010 Report Posted May 12, 2010 my mods 40 over cool head fmf exhaust boost bottle no tors kn filter no lid 290 mains 30 pilot needle 2 groove from top mixture screws 1 3/4 out my question is when i start it ,it wants to rev to the moon,but when i pull the chock half way it runs good,and when i push the chock bac in it revs again i have tried 270 and 310 mains and moving the needle clip any other ideas thanks Quote
badassbanshee479 Posted May 12, 2010 Report Posted May 12, 2010 sounds like you have an air leak...... build yourself a leak down tester, pump the engine up and spray the seals, gaskets and intakes with soapy water.... if it is leaking you will see bubbles. http://bansheehq.com/forums/index.php?showtopic=110585 Quote
firebanshee Posted May 12, 2010 Report Posted May 12, 2010 my mods 40 over cool head fmf exhaust boost bottle no tors kn filter no lid 290 mains 30 pilot needle 2 groove from top mixture screws 1 3/4 out my question is when i start it ,it wants to rev to the moon,but when i pull the chock half way it runs good,and when i push the chock bac in it revs again i have tried 270 and 310 mains and moving the needle clip any other ideas thanks Check your intake boots were your boost bottle goes in,they could be torn or leaking,common problem. Quote
bbcmudtruck Posted May 12, 2010 Report Posted May 12, 2010 Here is the leak down kit I put together. It works ok, but I would get some rubber caps to put over the exhaust rather than try to stuff the rubber groments in there. The exhaust isn't round and they are hard to get a seal. Quote
a0592 Posted May 12, 2010 Author Report Posted May 12, 2010 ok had it running with choke half way out and i sprayed carb cleaner all around motor and if there was a air leak would'nt rev up i dont know what else to try Quote
a0592 Posted May 12, 2010 Author Report Posted May 12, 2010 also would the brake switch on the brake lever cause it to run like that Quote
a0592 Posted May 13, 2010 Author Report Posted May 13, 2010 could it be a head gasket or base gasket Quote
badassbanshee479 Posted May 13, 2010 Report Posted May 13, 2010 did you pull the stator cover off and spray the crank seal behind the flywheel? also try and leave the choke off... Quote
a0592 Posted May 22, 2010 Author Report Posted May 22, 2010 just replaced crank seals started and still revs untill you pull the choke,should i buy a polaris Quote
firebanshee Posted May 22, 2010 Report Posted May 22, 2010 just replaced crank seals started and still revs untill you pull the choke,should i buy a polaris Are you SURE the slides are going down ALL the way. Quote
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