Hi Neil,
thanks for that, informative, but, NO MIL light on, symptom is engine running lumpy,(sorry, forgot to mention that) not as responsive from idle so, idle, foot down, pause and then revs, with a large amount of hissing. I'm fairly sure I have some split vacuum hoses, which would also probably fit the majority of symptoms, mix weak, on both banks, O2 sensor actually reading correctly as the mix is lean due to the ingress of air.
Will try this first, as replacing the vacuum hoses was high on the hit list anyway!
Will report back when time allows me the opportunity of swapping the hoses.
Many thanks to all.
Best regards,
Steve
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