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High emissions

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Old Feb 21st, 2011, 13:59   #11
B20F
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First I would check the lambda
That is the #1 suspect. If you need to change the lambda use an original Bosch, not another brand.
The cat doesn't do anything to the CO, it converts the NOx and SOx gasses, not the CO&CO2 so I don't think that would be the culprit. The lambda regulates the CO&CO2.
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Old Feb 21st, 2011, 20:07   #12
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I thought it has a 3 way cat converter (will check service manual though), but as was mentioned/you said checking if the lamda sond is working properly is a good start.... (i believe there is a fault code for it as well, fault codes on this site somewhere...)
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Old Mar 1st, 2011, 09:47   #13
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Sorr yfor the delay in updating you. Not easy to fix cars with a 10 month old baby. Thanx for all your help so far. The spark pluga air filter have been changed. According to my Haynes manual my exhaust shouldnt have a cat but mine does! Will invest in a Lambda sensor. Excuse me for my lack of knowledge. Faults codes. What fault codes are these? Wasn't told about any when had the M.O.T done.
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Old Mar 1st, 2011, 10:45   #14
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You can read out the faultcodes yourself from the small black diagnostic box on top of the left shocktower. All you need is a pencil and paper to note the codes while retrieving them. Put the probe in socket #2 and follow the instructions. After the read out reset the faultcodes and go for a drive for about 15minutes and repeat. If the same codes show up again you know what is wrong.
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Old Mar 6th, 2011, 18:47   #15
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The fault code is 313 charcoal absorption canister valve : signal faulty. This means nothin g to me. Tested the Lambda. Reading whilst waiting for the 5 mins was tween 0.1 and 0.7. After 5 mins it was 0.2 to 0.6. Take it I need a new Lambda? Thanx again for your help.

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Old Mar 7th, 2011, 10:19   #16
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The charcoal cannister (evap system) is located low at the lhd side of the radiator when standing in front of the enginebay. Looks like a bigger sized beercan. It absorbs the fumes from the petrol tank and burnes them off if the engine is at operating temp which is controlled by a valve on top of the cannister. Code 313indicates this valve is faulty. The're 2 small hoses on top of the cannister. One runs to the intakemanifold and one comes from the petroltank. Take the hose off that runs to the intakemanifold and block the connector on the manifold to prevent it drawing false air. That way you dissable the evap system, the faultcode will stay though.
The Lambda is indeed not correct, think it's on it's way out. If you replace it be sure to use an original Bosch lambda. Other brands can cause problems!
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Old Mar 7th, 2011, 13:17   #17
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Thanx will sort that later. I am now even more confused. Reading the details with regards to my VIN number my engine is B18F. According to my owners manual its a B18E. And the tin plate on the engine makes it a B18EP. Is there a major difference? As the water pump and spark plugs I got are for the B18E.
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Old Mar 7th, 2011, 14:28   #18
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Plugs and pumps for the 400 series are all the same for the different engine types, so no need to worry.
Maybe a previous owner changed the engine? If the tinplate on the engine says B18EP it should have no cat&lambda, the B18FP is the same engine with cat&lambda. As far as I know the EP engine was never supplied to the UK, only to countries where the're was a poor supply or no supply at all of unleaded fuel at the time.
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Old Mar 7th, 2011, 20:43   #19
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The high CO was caused by the charcoal canister then. It has a magnetic valve on it which regulates the amount of HC gases to enter the manifold, seems the valve is always open. You can try to replace it or do as mentioned (should get it through the emissions test if blocked off).

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Old Mar 16th, 2011, 18:17   #20
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Latest update is . . . Have blocked charcoal canister and ordered a bosch lambda. Once its arrived I will put it through an MOT and let you know how I get on. Once again thanx for all your advice
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