All outstanding bit for my carbs rebuild (I had most in stock) arrived today, so I thought I would do the overhaul.
Everything went well apart from having fettle the 'aftermarket butterflies' a bit.
Put them back on with suggested settings & it started up. So warmed it up to normal temp and tried to balance
them, that didn't seem to go too well, lumpy as hell & very reluctant to tick over, checked mixtures & LH was a bit lean.
Unable to make the LH carb go rich (confirmed with Colourtune). Took them off & could find nothing wrong with Jet height
or needle position (as rich as it would go). Back on & still same issue, so off again & checked float height - nothing wrong there,
hadn't changed float valves as they are Viton Tipped & only a few years old with never any sign of flooding.
Put them back on & same issue, too lean on LH, lumpy as hell & reluctant to tickover. This time had a strange whistling noise.
Then I noticed what was laying against the screen on the wipers - what a PLONKER, the engine breather pipes !!!!!!!.
No problem now, piston lift method & colourtune show mixtures bang on.
Must be an age thing, I wouldn't have done that a few years ago !!. Wasted at least an hour & a half on that.
Neil.
Everything went well apart from having fettle the 'aftermarket butterflies' a bit.
Put them back on with suggested settings & it started up. So warmed it up to normal temp and tried to balance
them, that didn't seem to go too well, lumpy as hell & very reluctant to tick over, checked mixtures & LH was a bit lean.
Unable to make the LH carb go rich (confirmed with Colourtune). Took them off & could find nothing wrong with Jet height
or needle position (as rich as it would go). Back on & still same issue, so off again & checked float height - nothing wrong there,
hadn't changed float valves as they are Viton Tipped & only a few years old with never any sign of flooding.
Put them back on & same issue, too lean on LH, lumpy as hell & reluctant to tickover. This time had a strange whistling noise.
Then I noticed what was laying against the screen on the wipers - what a PLONKER, the engine breather pipes !!!!!!!.
No problem now, piston lift method & colourtune show mixtures bang on.
Must be an age thing, I wouldn't have done that a few years ago !!. Wasted at least an hour & a half on that.
Neil.
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