The Triumph Dolomite Club - Discussion Forum

My SPRINTS HS-6's have recently been rebuilt.
Just the other day, before the thing developed a water leak, I managed to get it running beautifully.
The mixture settings are just right, but, I've run out of idle/airflow adjustment with the screws loose-ish in the threads.
Like I said, its running nice with good, crisp throttle response but its idling at 1,000-1,100 RPM (should be 750?) and although I think I can get it marginally lower I'm concerned I'll lose the idle adjustment screws altogether.
Any advice?
Thanks & Cheers,
Rob

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"When everything seems to be going against you, remember that the airplane takes off against the wind, not with it". HENRY FORD
1915 Ford "T" Speedster (Evangeline), 1921 Ford "T" Tourer (Anastasia), 1955 Zephyr 6 (Purdey), 1975 Dolomite SPRINT (Daisy), & a couple of moderns.

sounds like an air leak somewhere.

Malcolm

Throttle cable have enough slack~? Choke linkage touching the "cams"? Best to make sure its all slack then see what happens.

Tony

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Membership 2014047

"Thanks" Gents.

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"When everything seems to be going against you, remember that the airplane takes off against the wind, not with it". HENRY FORD
1915 Ford "T" Speedster (Evangeline), 1921 Ford "T" Tourer (Anastasia), 1955 Zephyr 6 (Purdey), 1975 Dolomite SPRINT (Daisy), & a couple of moderns.

If your SUs have been rebuilt, pound to a penny the throttle discs aren't quite lined up. I have just had the same issue on my 1850. The smallest amount of gap around the discs when the throttle is closed will cause a rise in revs. I took my carbs off again, removed the chamber and piston and then looked through the carb with a bright light behind. The gaps around the disc were obvious. I slackened the butterfly disc screws and wobbled the disc this way and that until the gaps were at their absolute minimum. Put everything back and, presto, it works properly.

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Mike
(1969 MGB GTV8, 1977 Dolomite 1850HL, 1971 MGB roadster now all three on the road)

What he said^^^^^

And just check the choke fast idle screws are not too far in and stopping you from dropping it properly!

Steve

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'73 2 door Toledo with Vauxhall Carlton 2.0 8v engine (The Carledo)
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine (The Dolomega)
'72 Triumph 1500FWD in Slate Grey, Now with RWD and Carledo powertrain!

Maverick Triumph, Servicing, Repairs, Electrical, Recomissioning, MOT prep, Trackerjack brake fitting service.
Apprentice served Triumph Specialist for 50 years. PM for more info or quotes.

Like I said Good call on the throttle blades there:

Tony

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Membership 2014047

What they said. Nothing to add.

Jeroen

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Classic Kabelboom Company. For all your wiring needs. http://www.classickabelboomcompany.com