New ownership of #347 and running problems

[David]

Some background reading, Alex. (I think tomcat22 was the owner before jdtp93):

See: https://www.two-sixties.co.uk/mgoc260/html/f0rum/showthread.php?10709-347-misfire-or-even-worse
and this: https://www.two-sixties.co.uk/mgoc26...-chain-tension
and most recently, this: https://www.two-sixties.co.uk/mgoc260/html/f0rum/showthread.php?16916-New-engine-for-a-ZT-400

Your theory about the cats sounds like it could be good. I once bought a V6 Rover 75 Tourer with a blown up engine (knowingly), and quite a while after the engine change, it wouldn't rev over 2500 rpm ! Almost totally blocked cat. No warning lights oddly enough.

David