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What is good to be done before the Emission Test?
Does it help to change oil before the Test? Any treatment solutions?
Does 260E have the water/fuel separator?
Thanks.
Andrew.

http://www.ebop.govt.nz/Air/Quality/Vehicles/Reducing-Vehicle-Emissions.asp
Petrol Vehicle Maintenance Tips
Excessive exhaust smoke can indicate engine problems. Here are some useful tips to keep your vehicle well maintained:
Change the engine oil at least as often as recommended by the vehicle manufacturer. Dirty engine oil becomes very thick and will cause excessive engine and turbocharger wear leading to increased smoke emissions.
Maintain the engine▓s fuel system, as recommended by the manufacturer. This includes:
following recommended fuel filter change intervals
regularly draining the water/fuel separator
having injectors or carburettor checked and cleaned to prevent plugging and replacing them when worn
having the fuel injection pump maintained as needed.
Maintain the engine (including pistons and rings) to prevent the engine burning oil.
An exhaust emission test is an easy way of checking whether your car is meeting recommended exhaust emission standards. A qualified mechanic can advise you how emissions from your vehicle can be reduced.
 

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Hi Andrew,
Changing the air and oil filters will certainly help, as well as changing the spark plugs. One thing I normally do before an emissions check is drive the car for 15 to 20 miles at highway speeds(65 mph), this insures the catalytic converter is really hot. I don't have any scientific proof on this, but it seems to help.

Ken
 

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bigbenzman is right on about driving the car for a while. take it out and beat it up for a while. high RPM driving on the highway will stack the odds in your favor for the test.
 
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