Use carb cleaner and a wire brush.
how do you clean a egr valve on a vauxhall zafira 1.6
New fuel filter. Clean EGR valve and clean intercooler and pipes. Add injector cleaner to fuel and also fuel enhancer additive.
hopw do I find the egr valve on a vauxhall signum
Remove the EGR valve from the Corsa. Wash the EGR valve with carburetor cleaner. Make sure that the valve is clean of gunk and let it dry. Reinstall the valve.
under the bonnet
The EGR is located at the back of the engine(gearbox end) between the cylinder head and the bulkhead/firewall.
If this is the Eco Tech Vauxhall Engine then it will either be the EGR Valve (Exhaust Gas Recirculation Valve) or the Mass Air Flow Meter. It's worth disconnecting the Mass Air Flow Meter when it is reving and see if this alters the revs if not then I would suggest cleaning the EGR Valve as they get clogged up with black soot and subsequently alters the air to fuel mixture as would the Mass Air Flow!
its on the front of the engine behind radiator
After unbolting the EGR valve, clean it with a carburetor spray. Allow it to dry completely before reinstalling the valve.
do you mean the EGR valve? The Exhaust Recirculation Valve? EGR
Depends on the EGR valve. A good lot of them can be cleaned and reused. New ones can costs hundreds of dollars.The EGR valve works by routing a small amount of the exhaust gases back into the combustion chamber.See the Related link for more information.To clean the EGR valve, you may be required to remove the vacuum hose and clean out the carbon deposits.
Remove the EGR valve vacuum lines. Remove the EGR valve retaining screws. Wash the EGR valve in hot water. Allow the valve to thoroughly dry before installing it.