MR2ROC Club Gathering!
Sunday 13th July
The Stanwick Hotel, Stanwick, Northants NN9 6QY.
https://www.mr2roc.org/index.php?msg=907250
Quote from: bobo83 on Yesterday at 17:05Happy to report that by replacing the starter motor the noise went away. Problem solved.
Quote from: ChrisGB on May 25, 2016, 08:53I cannot see your logic on the diagnosis?
I know, I need to block the tail pipes with a rag and check properly at the wknd. However wknd gone, I replaced a stud and nut on the 3 amigos and I cranked up some of the bolts on the manifold. So I know there are no leaks at the joints that would cause a rich ltft on bank 2 but.. the flexis are the only suspect thing before the sensor on bank 2 so my logic tells me it's got to be a leak at the flexis.
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There are three oxygen sensors in the exhaust system, two of which monitor the fueling:
Sensor 1 Bank 1
Sensor 1 Bank 2
These are the ones above / before the pre cats, so a leak in the downpipe is very unlikely to have any effect on their readings. The third sensor after the main cat is for catalyst efficiency and a leak would possibly cause a code there, but not a bank 2 rich code.
Can you hear any exhaust blow?