Libertyandlivelihood Posted March 28, 2008 Report Share Posted March 28, 2008 Can anyone give me ideas on what can cause a Peugeot 306 1.9 TD to fail an emissions test as the smoke levels are too high (by 0.4) Looking for ideas on what could cause it and if I can fix them myself ( have some knowledge on cars ) thanks for any help Quote Link to comment Share on other sites More sharing options...
cappy0766 Posted March 28, 2008 Report Share Posted March 28, 2008 Too much smoke can either be poor combustion or oil getting into the cylinder. How many miles has it done? And what kind of previous owners had it had? If the engine has been fuelled up but not back timed, the diesel burns very poorly. If its oil (white smoke, or blue if it is a lot) we are talking valve stem seals or similer, which is fixable but a gold-plated pain in the **** (cylinder head off). Hope this helps! Quote Link to comment Share on other sites More sharing options...
al4x Posted March 28, 2008 Report Share Posted March 28, 2008 if it mostly does short journeys they all do it, get it a tin of one shot injector cleaner and put that in with the next tank of diesel, then give it a hard time plenty of revs and deliver it for its re-test hot and it'll go through Quote Link to comment Share on other sites More sharing options...
Libertyandlivelihood Posted March 28, 2008 Author Report Share Posted March 28, 2008 Its not my vehicle (yet) but I know that it has done very low miles for what it is and only 2 owners. 1 owner being a old lady doing shopping trips once a week and the other being another lady doing short journeys also. Quote Link to comment Share on other sites More sharing options...
paul1966 Posted March 28, 2008 Report Share Posted March 28, 2008 my landrover diesel failed on smoke too. on the way to the test station floor the throttle a few times and watch the cloud of soot in the rear view mirror. should be fine after. Quote Link to comment Share on other sites More sharing options...
al4x Posted March 28, 2008 Report Share Posted March 28, 2008 in that case it does need the injectors blowing through a bit, injector cleaner and a good thrashing and it will be fine Quote Link to comment Share on other sites More sharing options...
J@mes Posted March 28, 2008 Report Share Posted March 28, 2008 get the injectors cleaned properly at your local bosch/lucas service centre! Quote Link to comment Share on other sites More sharing options...
al4x Posted March 28, 2008 Report Share Posted March 28, 2008 not needed Jim it'll go through, my old fourtrak used to be a classic they'd rev it to the limiter and fill the testing station with soot then the next two runs it would run clean and pass, our 406 diesel used to fail every time unless it had a good thrash and injector cleaner bunged in. Allegedly you can mix a gallon of petrol in with a tank of diesel and that has a similar effect but not sure I'd want to try it Quote Link to comment Share on other sites More sharing options...
J@mes Posted March 28, 2008 Report Share Posted March 28, 2008 Im sure it will go through with a thrash/ injector cleaner, but having them done properly will increase the fuel economy by a fair margin - injector cleaning fluids clean them, they dont match and balance the spray patterns like having them done properly will. Quote Link to comment Share on other sites More sharing options...
al4x Posted March 28, 2008 Report Share Posted March 28, 2008 its a pug 1.9 diesel a straw would probably work as an injector Quote Link to comment Share on other sites More sharing options...
Traztaz Posted March 28, 2008 Report Share Posted March 28, 2008 Renew air filter also. Quote Link to comment Share on other sites More sharing options...
SPARKIE Posted March 28, 2008 Report Share Posted March 28, 2008 1.chuck an injector cleaner in it 2. check air filter replace if dirty 3.thrash the foooook out of it before you take it for retest really get it hot and hold throttle down for 3 seconds do this a few times until smoke stops i guess your reading was 3.4 as the limit is 3.0 for td watch the tester see if he is flooring it and holding it down when he revs it up if not tell him too Quote Link to comment Share on other sites More sharing options...
tosspot Posted March 28, 2008 Report Share Posted March 28, 2008 not needed Jim it'll go through, my old fourtrak used to be a classic they'd rev it to the limiter and fill the testing station with soot then the next two runs it would run clean and pass, our 406 diesel used to fail every time unless it had a good thrash and injector cleaner bunged in. Allegedly you can mix a gallon of petrol in with a tank of diesel and that has a similar effect but not sure I'd want to try it won't condone or recommend it but have done it and it worked, no apparent ill effects TP Quote Link to comment Share on other sites More sharing options...
Foxer Posted March 29, 2008 Report Share Posted March 29, 2008 A bloke at work who is an mot tester has done the old trick with the injector cleaner a few times on his van. But he doesnt put it in the tank what he does is remove the fuel filter and pour out the diesel then fill the filter up with injector cleaner not sure if you woud be able to do this as depends where your filter is and what type of filter it is. also im not sure if this could have any other consequences Quote Link to comment Share on other sites More sharing options...
HIGH OCATANE HITMAN Posted March 29, 2008 Report Share Posted March 29, 2008 put a diewsel treatment in and ragit a couple of juntions dowwn the motorway gettin the revs up about 4500 rpm on each gear on each acceleration. also check the air filter. im guessin this is on the basis of the co2 emissions? Quote Link to comment Share on other sites More sharing options...
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