first a mild explosion followed by a bi explosion

first a big explosion followed by a mil explosion

both mild and big explosions occi simultaneously

never occurs

leaking piston rings

use of thick head gasket

clogged air-inlet slots

all of the above.

0.15 kg

0.2 kg

0.25 kg

0.3kg

more

loss

same

may be more or less depending on engine capacity

180°

125°

235°

200°