Quote (eMptyBox @ Sep 24 2019 08:35am)
When ignition delay is long or inappropriate then much larger quantity of fuel has been injected before the first droplets burn and this may result in high rate of combustion all at once, giving rise to very high pressure waves and also higher peak pressures, causing a peculiar thudding sound. aka knocking or detonation. (pre-ignition)
this high pressure and heat is why it blew out.
hope you don't do this again... do regular oil changes and checkups
~~~~~~~~~~~~~~~~~~~~~~~Common causes of detonation include a buildup of carbon deposits in the combustion chamber and on the top of the piston that increase compression, no EGR (exhaust gas recirculation), overadvanced ignition timing, a bad knock sensor, a lean fuel mixture, low quality gasoline that does not meet minimum octane requirements, or any cooling problems that causes the engine to run hotter than normal (coolant leak, low coolant level, bad water pump, stuck thermostat, restricted radiator, defective cooling fan, even exhaust restrictions that back up heat into the engine.~~~~~
I actually bought it from auction with this issue. But thanks for the info so I know now