i have a puegeot 306 turbo diesel and apparently removing the EGR valve helps with engine noise and the smokeyness of the car. Is there any downside to removing it?
It will throw off the computer, and cause the check engine light to come on. Other than that, no.
when i used to modify cars/trucks.build high performance engines,the first thing to go was the egr valve.some places or states require an emissions test even on diesels.so if you do decide to remove the egr vale keep it handy to put back on.
The EGR Valve (Exhaust Gas Recirculation Valve) aids in warming up the engine to operating Temperature. The engine is designed for maxi mun efficiency and optimum power at a pre determined Temperature. If you are getting alot of engine noise or alot of smoke, the EGR valve isn't the problem. And removing it may improve the condition some, however, your engine has other issues. The downside on removing it from a diesel engine is by lowering the heat generated to the cylinders, you reduce the engines ability to burn all of the fuel. Diesel engine burn the fuel through compression and heat.... not spark. So lowering the cylinder Temperature leaves fuel in the cylinder that is unburnt. It will aid in lubrication to the cylinder but eventually may cause wet stack. The cylinders staying wet with unburnt fuel. Over time, if enough fuel builds up, the engine may experience a hydraulic lock.
