grantwestgarth

As the title suggests, I've just got back from my MOT and to my surprise my Berk hi-flow cat didn't pass on CO2 emissions?!? I gave it a good run on the way to the garage to get it nice and hot, but still was waaay off passing.

So, this is an appeal for help in the Bristol area. Does anyone have a spare OEM cat I can borrow/buy cheap for my re-test BEFORE Monday!?

Crossing my fingers and praying!

Thanks,
Grant.

chrispayze

Got one in the garage in East Bristol. PM me.

champion_hero

Sounds like you may have other issues tbh - I've had a berk hi-flow for about 5 years now and it's passed every emissions without issue.
May be wise to do a couple of other checks - air filter, sparks, etc to ensure the engine is breathing correctly and not running overly rich.

grantwestgarth

Cheers, I have also been thinking it could be something else! The sparks are new and the air filter is in tip top shape. What else do you think could be the issue? Anyone have any ideas?

Carbon S2K

You could get a terra clean done? Mr China thinks there worth the money?

flanders

I'm not familiar with the UK MOT, do you get a printout with the measured emission readings and the max limits?
The cat cools down rather quickly if you have the car sit for a while, when I did my inspection I had to go on a second run and drive it really hard then go right back to the measuring.

SuperHamz

Had a similar issue with my last MOT, not sure why as it passed the previous three times with no issues.

Irish TuneR

Might help to post up the CO and lambda results, id go with something else if else hugely off too.

BenRNBP

For a high CO reading I'd look for a dodgy injector, a misfire/dirty plug/dodgy coil, failed MAP sensor or maybe an under-reading coolant temp sender (the secondary o2/lambda sensor should pick up an issue with the cat if there is one)

Do you have anything like Torque for Android you can plug in - sometimes it can help to look at the Short and Long term fuel trims

I've resisted saying that my Berk has been fine for the three MOTs since fitting - oops, my bad

eSeM

Ditto!