Damann Posted February 26, 2018 Author Report Share Posted February 26, 2018 Show where to male or buy one for $30 Quote Link to comment Share on other sites More sharing options...
Damann Posted February 26, 2018 Author Report Share Posted February 26, 2018 Why not take everything back apart in an hr, and gasket seal every thing put back together, for free? Quote Link to comment Share on other sites More sharing options...
Damann Posted February 26, 2018 Author Report Share Posted February 26, 2018 Then ya know there isn't a leak. But ya know if I do that the mfer still won' start or run.. it's 1989.. honestly doubt the previous life owners ever tore bike down to replace crank seals.. prob got all new shit on trying to run on 29 year old crank seals Quote Link to comment Share on other sites More sharing options...
Damann Posted February 26, 2018 Author Report Share Posted February 26, 2018 Yes crossover tube is there and tight Quote Link to comment Share on other sites More sharing options...
Damann Posted February 26, 2018 Author Report Share Posted February 26, 2018 I got ya hotrod9193.. about where I'm at.. can't prove that engine is getting the fuel though, can not flood it like I can my other bike.. i know it has spark.. I known it has air.. it start with direct injection.. But with carbs on it will only and barley run with throttle.. problem is not carbs.. I'm 100%.. I switch plug caps, both make same size spark.. But not sure if reeds are letting fuel in.. therefore goes my leak, right????? No bottom end compression to open reeds on strokes.. no reeds open, no fuel into cylinders, no starty.. right? Did that make since? Quote Link to comment Share on other sites More sharing options...
hotrod9193 Posted February 26, 2018 Report Share Posted February 26, 2018 Ok then just do this...... tare motor completely down... split the cases.... order a COMPLETE gasket and seal kit along with some crank case sealant. Install all new seals, apply sealant to the crank case halfs and reassemble with all new gaskets. No need to apply sealant to gaskets unless you have a fd up case or cylinder. Then come back and let us know what's going on Quote Link to comment Share on other sites More sharing options...
Damann Posted February 26, 2018 Author Report Share Posted February 26, 2018 Question.. So if crank seal are bad??? Would it comprssion test top end right????? Before rebuild it had 95psi but rings and cylinders looked Good? Would crank seals blowing out ruin piston compression?? Quote Link to comment Share on other sites More sharing options...
hotrod9193 Posted February 26, 2018 Report Share Posted February 26, 2018 If you have a crankcase leak it's drawing air in from there as well, so it's getting to much air coming in and not enough fuel..... So when you dump a bunch of fuel on the piston it starts and runs until that fuel burns up, assuming your carbs are 100% and so is your electric then it has to be a crank case leak Quote Link to comment Share on other sites More sharing options...
Damann Posted February 26, 2018 Author Report Share Posted February 26, 2018 Hot9193 I think you've got it Quote Link to comment Share on other sites More sharing options...
Damann Posted February 26, 2018 Author Report Share Posted February 26, 2018 Hotrod, do you know if crank seals are bad will it compression check bad too? Quote Link to comment Share on other sites More sharing options...
hoppedupandcutdown Posted February 26, 2018 Report Share Posted February 26, 2018 Have you... pulled the fuel hose off carb, turned on petcock and verified fuel flow? Loosened bowl drain to verify fuel flow? If yes, try holding a piece of cardboard over both carbs without the filters and see if it starts Quote Link to comment Share on other sites More sharing options...
hotrod9193 Posted February 26, 2018 Report Share Posted February 26, 2018 Compression test is completely different from pressure test.... Compression is what pressure is in your cylinder above your piston when it makes a stroke. Pressure testing or leak down testing tests the crank case ( under your piston ) Quote Link to comment Share on other sites More sharing options...
Damann Posted February 26, 2018 Author Report Share Posted February 26, 2018 I bet that is why the dude thought it was burnt up. It smoked and only had 95psi when I bought it.. But after tare down cylinders weren't that bad to only have 95psi.. so I bet if i go compression check that bitch, it probably still has around 100psi on new top end, because crank seal is leaking.. right? Quote Link to comment Share on other sites More sharing options...
Damann Posted February 26, 2018 Author Report Share Posted February 26, 2018 So it's looking like pulling the motor and splitting cases is in my future.. thanks yaw, I'll let ya know what I find on compression check with new top end on it tomorrow Quote Link to comment Share on other sites More sharing options...
hotrod9193 Posted February 26, 2018 Report Share Posted February 26, 2018 Yes you can have perfect compression and still have a leaking case. He probably burnt the top end up because the case had a leak and he was running lean.... Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.