My first post
Any MOT Testers out there?
Appreciate some advice on 3 recent MOT Test’s that was done on my 67,000 Miles, 02, Vectra-C, 1800cc, Z18XE Petrol Engine.
Recently booked the above car into local garage for it’s annual MOT Test. Tester failed it on the ‘Exhaust gas test’ (emissions). Prior to this & thinking that I would give it the best possible chance of passing the emissions test, I replaced 4 x spark plug with ‘Bosch Super 4 Plugs’ replaced the ‘Lambda Sensor’ & gave it the ‘Forte Gas Treatment’
As a result of it failing the MOT Test on the Emissions I decided to get a local tuning expert to have a look at it, he too told me that the emissions was faulty, he said the Siemens MAF Sensor was faulty, he put in a new Siemens MAF, he also checked the timing belt etc, he returned the next day to check the emissions after I had gave my car a 30 mile run on his advice with the replaced MAF, again he reported the emissions were faulty, to cure the problem he now advised a new cat (ouch!), cat was replaced, resubmitted my car to same garage for another re-test, garage failed it again on the emissions only this time the reading was higher (bigger ouch), tuning guy returned the next day, he once again put his emission tester on my car, he was surprised that it had again failed the mot emissions as according to his diagnostic equipment my car was now pumping out fresh air, same day I returned the car to same mot station, surprise, surprise, it passed the mot emissions , mot tester said it was probably a ‘blip’ To add insult to injury my mot pass certificate even had the wrong mileage recorded on it.
I’m no mechanic but, was I just unlucky, was it a case of third time lucky, is it possible that the garage’s emissions test equipment is faulty or, does the mot tester perhaps needs a trip to the opticians.