because the petrol is to dirty or low octane
Running an engine with broken piston rings will cause damaging scoring in the piston chamber, and is not to be recommended.
It can't run good with a broken piston. More details please.
Type your answer here... Burnt intake or exhaust valve, hole in piston, broken piston rings, bad head gasket, valve spring broken.
The primary cause of broken piston rings is a lack of lubrication and excessive heat buildup. Broken rings create lost combustion and excessive oil burning.
Yes!
big hammer
If there is oil getting to the top of the piston and burning then you have a blown head gasket or the piston rings are worn or broken. Engine must be disassembled.
A broken timing belt will make a mishap out of the engine. The Piston will kiss the valves and ruin the head a possibly the piston that it comes it tact with. Hope this helps.
When there is to much resistance to retract the piston, When the rubber piston(s) boot/seal is damaged/torn, When the bleeder is broken/stripped,
The engine would smoke and damage the bores.
Piston seized to cylinder wall Broken Crankshaft
Your piston rings need replaced. One of the two piston rings on a piston is for oil control. This is either worn or broken and needs replaced.