Ali_23077 Posted January 15 Report Share Posted January 15 Hello everyone, I have a Ford Edge SEL 3.5L AWD 2014, now driven 106,000 kms, I am wondering if it is better to change the spark plugs and drive belt now, the owner manual mentioned every 160k for spark plugs and only inspect the drive belt every oil change. Under special operating conditions section it is mentioned to change it every 96k kms. I live in Dubai and weather temperature exceeds 50 degrees celsius. I am the second owner and previous owner doesn’t remember if he changed the spark plugs or drive belt before or not. Quote Link to comment Share on other sites More sharing options...
enigma-2 Posted March 1 Report Share Posted March 1 Might be a good idea to have a mechanic pull one of the easy to get to plugs on the front of the engine as see what they look like. Its important to change the plugs on or before. Accessory belts can be examined easily, I've got 140 miles and still good. Don't think its necessary to change preempt. More important in hot climate to change the transmission fluid on regular basis. PTU annually as well (if you have AWD.) 1 1 Quote Link to comment Share on other sites More sharing options...
garycrist Posted March 1 Report Share Posted March 1 On my 2008 Edge 3.5L, I replace the spark plugs about every 75K miles. 210K miles now and I should inspect the OE belts.🤣🤣 1 Quote Link to comment Share on other sites More sharing options...
enigma-2 Posted March 1 Report Share Posted March 1 Have you done the water pump & timing chain yet? Quote Link to comment Share on other sites More sharing options...
1004ron Posted March 1 Report Share Posted March 1 2 hours ago, garycrist said: On my 2008 Edge 3.5L, I replace the spark plugs about every 75K miles. 210K miles now and I should inspect the OE belts.🤣🤣 I do spark plugs around the same mileage. The Aux belt, tensioner and idler I did at around 100K miles - based on the condition of mine that that mileage I'd say you're safe to go 150K miles, but recommend the kit, belt tensioner and idler. 1 hour ago, enigma-2 said: Have you done the water pump & timing chain yet? Yes, on this engine the water pump is critical. Quote Link to comment Share on other sites More sharing options...
Ali_23077 Posted May 22 Author Report Share Posted May 22 On 3/1/2025 at 9:16 PM, enigma-2 said: Have you done the water pump & timing chain yet? No yet Quote Link to comment Share on other sites More sharing options...
flymore Posted May 25 Report Share Posted May 25 Do you change the coil packs with the spark plugs? Quote Link to comment Share on other sites More sharing options...
1004ron Posted May 25 Report Share Posted May 25 1 hour ago, flymore said: Do you change the coil packs with the spark plugs? At 114K miles I've changed plugs twice without changing coils - if one coil fails I'll look at changing them all. Quote Link to comment Share on other sites More sharing options...
enigma-2 Posted June 1 Report Share Posted June 1 On 5/25/2025 at 3:28 PM, flymore said: Do you change the coil packs with the spark plugs? Usually the coils fail due to not changing the plugs by 90k.(Go too long on plugs, the gaps get too wide, they will cause them to draw too much current and that extra current causes the coils to over heat. And fail.) As you change below the recommended maintenance specification, should last for a long, long time. The most common failure isn't the coils themselves, rather the rubber boots harden, start to crack and leak spark. Quote Link to comment Share on other sites More sharing options...
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