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International Automotive Technicians Network
Re: Explorer 4.0 spark knock (police vehicle)
Posted to Technical Discussion Forum on 9/24/2007 4 Replies

You won't trick this one in the right way... but it is easily tricked in the wrong direction.

Fuel trims can be unreliable on a FF vehicle like this to check for a lean condition. A vacuum leak or MAF can hide under the FF strats on this car.

If it sees a ... Login to read more.

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