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What is causing my 2001 Ford AU Falcon ute to miss?

Asked by Paul

I have a 2001 AU Falcon ute. It's a 4.0-litre single cam and it's got a miss. It seems to be cylinder number six. I changed the plugs, but within 500km the miss has returned a few times. Is it the ceramic part of the plug cracked, or is the spark-plug fouling? Any thoughts? Also, can this car run on e10?

Answered by CarsGuide

11 Sep 2020 David Morley

A miss is fairly common on these engines and is usually tracked back to either a dud spark-plug or a crook ignition lead. If you’ve already changed the plugs, I’d suggest checking the ignition leads for excessive resistance. The other major source of misses in these engines is usually a fault with the coil-packs. Swapping these for another set is a pretty easy way to check whether they’re the culprits. Don’t forget, however, that a miss can also be fuel or mechanical-related, but experience with these engines shows that the ignition system is often the cause.

According to government websites, the 2001 Falcon six-cylinder can, indeed, use E10 fuel. You may find, however, that you use a little more E10 over 100km than normal unleaded, so the savings at the pump might not be as marked as they seem on paper.

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