Contour Enthusiasts Group Archives Forums Modifications Duratec Performance egr valve mystery mod?

where is the EGR Located? Got pics or help me out

That is all you gotta do? How small should the hole be?

Originally posted by mangler:

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One thing you can't argue about is it keeps your intake and TB MUCH cleaner...

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I sure can argue that point.

Your TB and intakes get dirty from the PCV dumping into the bottom of the intake. Not from the EGR system in any way.

The EGR system is used to reburn unburnt fuel vapor in the engine and cool the engine's cylinders. One's good for the environment, 02s & cats and the other your engine.

I see. So how do you explain the black carbon deposit on the restrictor plate? Maybe PCV is responsible for most of the gunk, but I can tell you the EGR contributes to the deposits in the intake.

BTW, EGR = exhaust gas recirculation. How much of your exhaust gases are unburnt fuel vapors? I'm hoping very little (if not, check your plugs ). The rest is inert exhaust gas. And the way I understand it, the inert gas is there to lower combustion temperatures, and reduce the production of NOx harmful bi-products.

So yes, the EGR plate may reduce the life of your plugs and your cats somewhat (increased exhaust gas temps), but it does provide a better part throttle response. Think about it, which would you rather have : 100% unburnt air/fuel charge, or 90% unburnt power producing charge, and 10% inert gas?

Yeah... what mangler said. (And very well said for a newbie!)

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Heres a pic of the EGR valve on V6 ... and here is a sketch of what the restrictor plate looks like

(Use the actual EGR valve gasket as a template. Just make the middle hole smaller, like 1/4")