Tima421
Member
Hi there! Just picked up a Really really nice 1994 spx w like new shore lander trailer ! Bought it mostly for trailer . The guy said it idles but won’t rev up at all . It’s got 140+ compression. I just started messing around w it . I used the battery it came w ( guy said he just charged it & 1 year old ) I cranked the motor over for a few seconds & it started slowing down very fast . Though it was the battery ( junk !) so I got my brand new one & tried that with same results ! It seems like it’s building up so much pressure in cylinder it’s cranking over SUPER hard . Air pumps out exhaust port in back while cranking . Could this be the rotary valve way off ? Thanks for any help