what happen when diesel is injected in petrol engine

Answer Posted / john

Diesel does not need high compression ratios to ignite. A
diesel engine has a high compression ratio purely because
that is more efficient. Diesel has an etremely low octane
value (or high ctane value) which means that it will auto
ignite very easily.
This means
1) if your car is fuel injected your will hear bad
knocking, and realise there is a problem and turn off, or
2) If your car has a carb, you will hear bad knocking and
turn off, though your engine will keep running, since it
will be auto igniting. And you engine will seize, since in
those 40 seconds before seizure you will probably not think
quick enough to put it in gear and stall it.
Soo best plan, don't use diesel in a petrol car.

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