Australian Car Repair Issues? Ask an Auto Mechanic for Answers ASAP
Sounds like the cams are sizing or even possible crankshaft bearing .
To be sure it's nothing external remove the belts and run the engine to high revs if sizes again its internal
engine failure .
If runs free check all the belt pulleys alternator etc.
But most likely internal from what you explained .
Check oil level .drain off oil and check for metal deposits and the drain bolt for metal deposits
this will confirm internal damage check oil for golden metalic colour will confirm bad bearings .
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