Hi I have just brought a runaround a Peugeot 306 1.4 *******n hatchback I took it for an MOT which it failed on emissions 0.7 instead of 0.2 the garage were really good and suggested I put in cataclean then Italian tune which I did, took it back & rather than waste a retest they checked emissions & again 0.7 they suggested oil change/flush/filter, new plugs,new air filter as the car had been poorly maintained which I have now done.
I looked for the oxygen sensors & can only find 1 on the down pipe & nothing near the cat,is there only 1 or does it vary ,also after I flushed & drained engine thoroughly by the time the new oil got to the dipstick it was black is it worth draining & refilling & is there anything else I need to do re emissions.
I looked for the oxygen sensors & can only find 1 on the down pipe & nothing near the cat,is there only 1 or does it vary ,also after I flushed & drained engine thoroughly by the time the new oil got to the dipstick it was black is it worth draining & refilling & is there anything else I need to do re emissions.