my 1986 2.3 16v 190 has just failed the m.o.t. on high emissions. i was told that the airflow wants adjusting. where is this situated please. i have put a new air cleaner on. it never had any probs before is ther any other things i may be doing to bring down the readings regards ken

If you can post your results... there are many people here who will be able to interpret them for you.

Please post as much info as possible like the limits and results on all gases tested.

Also post any other symptoms such as change in gas mileage, rough starts, running...

__________________
-Marty

1986 300E 220,000 miles+ transmission impossible
(Now waiting under a bridge in order to become one)

Reading your M103 duty cycle:
http://www.peachparts.com/shopforum/831799-post13.html
http://www.peachparts.com/shopforum/831807-post14.html

the co level was 4.76% the limit is 3.50%. my brother in law is the mot tester. you can see he does me no favours??the hc(whatever that is) is 1200 ppm vol actual is 601 ppm vol (pass) the car will not tickover unless it is hot otherwise all seems ok

Is this car in original configuration? Does it have a catalyst? O2 sensor?

Was the test just run at idle (tickover)?

Did you fully warm up the engine and leave it idling before the test, and NOT SHUT IT OFF? How long did you wait?

Your HC (hydrocarbons) and CO (carbon monoxide) are very high for a lambda equipped (O2 sensor) engine - even one with no catalyst.

Did your brother-in-law offer any suggestions as to what the problem is?

What were the results for previous tests?

What is "m.o.t."?

Duke

the car has not cat
was run at 2000 revs then idle
mechanic said adjust the fuel/ air mixture (maybe too rich)
my question was where and how do i do this
i can use the garage anayliser to adjust the co2
the m.o.t. is the english ministry of transport yearly test for vehicles over 3 years old as to road worthiness. covers rusting/steering/lights/emissions/ mine failed on a binding front brake . i had put brand new pads in and the l/h front was binding.( i have done that now) and the emissions

All 190E's have CO adjustment!

With tha air filter removed you will see an adjustment "tower" between the fuel distributor & the air flow plate. Pushing the 3 MM adjusting screw down & turning the screw anti-clockwise will lean out the fuel mixture! Good luck!

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