I was helping my dad's friend with a problem with his lo47 pajero on 4g54 engine.
He complaint about lack of power.

I check the ignition and it was a mile off at beyond 10degree after tdc.
I reset the ignition to 7btdc and was surprised that the engine backfires so i retune to 5 btdc and let him have a go.he said no improvement and the engine is idling badly and it still backfire.

So,i set it at 7 after tdc and the engine becomes smoth.
This time i went with him for a test drive.i...