Question about 2007 Ford Explorer Sport Trac

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It is a 2007 sporttrac LTD with a 4.6 V8. When I start the truck in the morining or if it has been sitting for a while it sounds as if I have an exhaust leak as it ticks. If I rev the engine it backfires but after it warms up it works excellent and when you rev the engine it does not backfire. It really does not matter if it cold, warm or damp outside when it does this. Once and a while I will start it and it will not tick but if I shut it off and then restart it it does tick. Please help

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Its possible that there is a fuel flooding when the vehicle sits idle and this could be the reason that it starts off witha very rough idle, may be smoke and then clears up the cylinder to have the right fuel.Hence you may check the fuel pump for the residual fuel collection on the rail,have your pump calibrated.

Posted on Sep 29, 2010


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