The ERG valve helps exhaust gasses flow through a diesel engine. When the ERG gets clogged with carbon build-up, it will cause problems with the engine such as loss of power, smoking, or surging. Once it is removed, however, cleaning the ERG valve on a diesel engine is an easy process. The process takes a few minutes to complete, and the valve can then be reinstalled to maintain the quality of the engine's performance.
- Skill level:
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Things you need
- Carburettor cleaner
- Injection cleaner
- 2 O-rings
- ERG valve gasket
- O-ring removal tool
- Nylon brush
- Small flathead screwdriver
- Dry cloth
- Can of compressed air
Scrape the carbon build-up off of the ERG valve with a small flathead screwdriver and a stiff nylon brush.
Remove the two O-rings and base gasket on the ERG valve with an O-ring removal tool.
Soak the ERG valve in carburettor cleaner. Do not allow fluid to penetrate the weep valves located beside the base gasket. Submerge it until the remaining carbon is removed.
Rinse the ERG valve with injection fluid after the carbon build up has been removed.
Dry the ERG valve with a clean cloth or compressed air. Replace the gasket and O-rings. The size of these depends on the size of your ERG valve.
Tips and warnings
- You can take the ERG valve out of the carburettor cleaner and scrub it with a nylon brush to help speed up the cleaning process.
- O-rings and replacement gaskets can be purchased online or at any auto bodyworks garage.
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