I suppose we have two options. One is to remove the valve and manually clean it. I know my valve on an XJR 350 is located somewhere near or on the throttle body right at the back of the engine with the bulkhead fold over being directly over the throttle. Access is not easy.
The second option is to try a magic fix in a spray tin. If it works, that is great. If it helps clean the valve a bit, that`s not bad either. In my experience many of these after market products do what it says on the label. Cataclean is one example of an extremely good product to be found on the shelves of motoring outlets.
This Wynns EGR cleaner is available for petrol or diesel applications. £5.99 from Halfords. A spray time of some solvent or other which reminded me of carb cleaner. Lift the air box lid and have someone hold the engine at 2000rpm and squirt the stuff down the air intake in short blasts. Grey mist/smoke will appear from the exhaust a few seconds after you spray into the inlet system. It takes a few minutes to empty the contents into the air intake.
I don`t mind investing a few quid in this sort of liquid preventative maintenance. It doesn`t do any harm and all I ask from a product is to so what it says on the label. I certainly don`t expect it to work unspecified miracles or cure worn components.
I dumped this spray can of cleaner through my inlet system this morning in preparation for removing my supercharger for re-porting in the very near future. The objective being to attempt to soften any deposits in the EGR before I get to remove it when the throttle body is taken off. Hopefully any further cleaning necessary will have been made easier by using this Wynns product.
Mike
