Sounds to me like the auto decomp on the cams is staying open. Pull the cover n see, if they feel fine, pull them out, if it gains compression then either cams or messed or valve adjustment way off. If still no comp a valve is bent or about to drop or the rings are installed completly wrong or the heads warped hard.
04 YFZ. WR crank, MMAD 14.25 piston, CW 98mm, KW ss Valves, KW spring, Velocity head, YZF cams, GYTR Kickstart, Dyna FS, Nology coil, Rossier exhaust, Tusk clutch, FCI intake, Boyesen quickshot R&D fuel screw .
Elka triple rate front & back, Houser +2 arms, +1 swinger & +2 stem, G-force axle, Streamline lines, wave rotors, AC nerfs, IMS pegs, douglas beadlocks, MXR6 tires, Pro taper bars, ASV levers, Gibson stablizer, MP twist.
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.