car has failed MoT with emissions of 1.074 (should be 0.970 - 1.030)
there is a slight blow on an exhaust joint at the cat, the tester was talking as if fixing or changing it would fix the problem.
What does lambda emissions mean, and would a leaky joint cause it? If it needs a new cat, any money spent would be wasted. Last year I pointed out the noisy joint to the main dealer and they quoted £800 for a new cat, so I didn't have one.
the engine was also running very rough on the day of the test, possibly because I had hosed it down after cleaning off some spilt oil. It is now dry and running smoothly again.
there is a slight blow on an exhaust joint at the cat, the tester was talking as if fixing or changing it would fix the problem.
What does lambda emissions mean, and would a leaky joint cause it? If it needs a new cat, any money spent would be wasted. Last year I pointed out the noisy joint to the main dealer and they quoted £800 for a new cat, so I didn't have one.
the engine was also running very rough on the day of the test, possibly because I had hosed it down after cleaning off some spilt oil. It is now dry and running smoothly again.