hi i have a 2000 blaster and when i rode today the engine seized up then came out of it and then it wouldnt start so i put it in 1st gear and i could push it, it was like there was barely any compression but when i kicked it over i could feel the compression. so i brought it home and i had a big leak in the base gasket, would that be why i could push it in gear?. when i took the cylinder off the base gasket was missing like half of it and my clutch cover gasket is leaking to. what is the problem