UNSEALED 4X4 ISSUE 013

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DPFs like this will eventually clog up and reduce the efficiency of your engine – all in the name of emissions reduction

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Let’s be honest, most of us

could find something wrong with our trucks without looking too hard. We’re not talking about that dent you collected last weekend when dropping down off that ledge or that driveshaft you booger-welded back together on the track that’s been making you feel like you’re driving during an earthquake; but fromthe-factory problems that make you wonder if the engineer who came up with the idea got their degree out of a cereal box. There’s no one make or model that’s more or less guilty than the others – they all do it. So let’s take a look at six of the most aggravating things you’ll find on many modern fourwheel drives.

EMISSIONS JUNK

Ok, I understand that things like diesel particulate filters (DPF) and exhaust gas recirculation (EGR) systems are necessary evils these days to keep manufacturers from falling foul of numerous government entities, but they are probably the cause of so many problems and failures that you’d swear they were designed by career politicians. Take EGRs for instance, which work by opening a valve to allow already burnt exhaust gasses back into your engine’s intake to be re-burnt in an effort to reduce emissions. And y’know what? It works… for a little while. The fundamental flaw is that by circulating ‘dirty’ gasses through the intake over and over again, carbon deposits will eventually build up and start clogging things. In other words it’s essentially engineered to fail, yet they’re a legal requirement. What the…!

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