New to the forum here. Just bought a 2005 boulevard S50 VS800 with 13.3K miles for $800. It came with a box of carb parts and the promise that it just needed to be put back together to run fine. The bike had sat in his garage for 4 years...never ran in that time even once. I put it together and...
-Bike makes no power over 1/3rd throttle and has pathetic throttle response. Has fuel, strong sparks and I cleaned the air filters. Bike will idle but not the greatest. Coolant is clean, oil looks like oil. synced the carbs and I quadruple checked the float heights. All carb settings are factory oem set. All valves were at .005" according to factory specs.
-I ran a compression test and it has ~110psi both cylinders. I've used 2 compression testers with the same results. I added oil to each cylinder and they came up to about ~140psi, so we have largely a top end issue. Manual says it should be 188-232psi
-I pulled and disassembled the motor and visually, I can't see any issues. Valves look good (but I have not removed them from the head), no obvious gasket issues, pistons, rings and piston walls look good. cylinder wall looks good, chain tensioners seam to function fine, ect... I obviously haven't been able to check the guides yet.
-No indications that the motor has ever been pulled apart prior to me doing so.
I think getting the head pressure tested is a good start at this point...
Any other ideas? Thanks in advance!