Re: Detonation and possible damage
Not an expert, but a motorist of 40+ years.
Experience tells me that :-
1 An engine will not "self-destruct" within seconds of the onset of pinking.
2 Really hammering a pinking engine over time will result in the piston
crowns becoming cratered and eventually perforated.
3 If pinking does occur, go light footed on the "loud pedal" to avoid
pinking. If there is space in the petrol tank, top up with "best" unleaded.
4 It used to be said that an occasional "thrash" gave an engine and exhaust
a good clean out. If you are a low mileage/light footed driver, try going
heavy footed for 10-20 miles. (within legal speeds, in 4th gear)
Apologies for the delay in feedback, but I was waiting for a more
knowledgeable person to respond.
A common mistake that people made when trying to design something completely
foolproof was to underestimate the ingenuity of complete fools.
"tomo" <firstname.lastname@example.org> wrote in message
> Hay everbody,
> I've got Focus 1.6 2002 (ZETEC), and I had recently bougth full tank of
> really bad fuel. It was Euro-95 as usually, but, this time I was
> obviously tricked. It had much lower ocatne level than it should.
> I drove for about cca. 50 km with it and than I realised that engine is
> producing this characteristic pinking-knocking sound. Next day I went
> to the car service and the fuel was removed and they told me that
> engine was detonating. After that I tanked Super-98 and this pinking
> noise was gone. Since than engine ran smoothly as before I guess.
> I've red that ZETEC is equipped with knock-sensors, but, since it was
> producing this knocking sound of detonation I'm worried about possible
> damages to the engine.
> Does anybody knows how long it takes until detontation can cause real
> damage to the engine ? Is it the matter of seconds ?
> Thanx in advance,