Mot failure!

[Wolfie_]

Ive got a Audi 80 sport thats failed mot on Exhaust emissions.

Exhaust emissions carbon monoxide content excessive and Exhaust emissions hydrocarbon content excessive to be exact.

Question is, is there a simple fix ie good service on engine, oil, filters etc or is it knacked and rebuild/replacement time

Ian

[Mawhitey]

make sure all of the engine breathers are clean and working, and throw a good injector cleaner through the tank. Oh and give her a good razzing just before you take it to flush it through a bit

[Blinded]

High HC - Hydrocarbons - Indicates a misfire condition (incomplete or
inefficient combustion).
* Ignition problems
* Carbon deposits in combustion chamber
* Overly lean A/F mixture
* Increased camshaft overlap

High CO - Carbon Monoxide - Indicates partially burned fuel (not enough
oxygen for complete combustion).
* Overly rich A/F mixture
* Dirty air filter
* High fuel pressure
* Dirty injectors
* Sluggish/inoperative Oxygen sensor
* Dirty oil
(from 20v.org)

try changing air filter, O2 sensor, and oil as well as spark plugs and see if that helps

oh and yeah, heat up the engine just before the test.

[RuffianXL]

run sea foam throught the gas tank, intake system and oil, change the plugs and oil when done clean out the egr system, problem should cured as long as the levels were not to high

[Wolfie_]

Thanks Guys. I will change oil etc and I will run some cleaner through the system. And then try an mot. I didnt get the paperwork for the emisions test as I bought it cheap as an mot failure so can only hope it wasnt to high. If engine is knackered it always gives me the chance to install some thing interesting under there altho not sure what