If you have a diesel car, this is for you
Last edited Thu Jun 14, 2018, 06:04 PM - Edit history (1)
For many years now, the government has mandated all diesels use Exhaust Gas Recirculation (EGR) to reduce the amount of oxides of nitrogen in your car’s emissions. (Gas cars have it too. This is about a diesel maintenance procedure.) Since all diesels create soot, all diesels clog their intake manifolds with a rather unpleasant mix of carbon black and oil fog from the crankcase vent.
If you don’t clean it out, it’ll starve your motor for air. You’ll burn more fuel and create more pollution.
You have to remove it from the engine to clean it. If you break this shit loose and it falls into the engine, it’ll ruin the motor.
The process is simple, if time consuming.
Remove everything that’s blocking the intake manifold. Remove that too.
Clean it out.
Put everything back where it was.
The hard part (unless you’re doing it on a VW Bug and have to feel your way around) is getting all that crap out of the manifold and the EGR valve. The “redneck” way is to squirt some brake cleaner in the manifold then, with an air hose in one hand and a propane torch in the other, set it on fire. What I did was to use brake cleaner to loosen up the crud then use a pressure washer to blow it out. If you have a cast iron manifold, oven cleaner works but it’ll eat an aluminum manifold.
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