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September 29th, 2008

Please pardon our dust while we improve the website over the next few days.  If you need anything please feel free to call 616-301-2888 or email Mike.  Thank you!

Q & A: Carb Tuning

Tuesday January 03rd, 2006
Q & A, MGA, MGB, MGC, MG T-Type, Midget
John, thanks for assisting the MG enthusiasts. I have 3 MGB's, one is a beautiful 1973 dark tulip GT.

I bought the car a little over a year ago and was told that the SU carbs (and engine) were rebuilt. The engine (and carbs) run fantastic except at idle. It either idles smoothly at 1500 to 2000 rpm (too high) or drops to 1000 rpm and idles very rough and wants to stall. Can you "tune" or adjust these carbs without going through a complete rebuild?

Also, there is a gearbox noise similar to what I would call a bad "throw out bearing" when the car is in neutral and the clutch is engaged. (A bad throw out bearing is noisy when the clutch is disengaged, right??). Someone told me that it was a bad bearing in the rear of the engine. Does that sound correct?

Thanks.

Respectfully,
Mike
Mike!

Black Tulip? Not many of those. The next year they lightened the colour and called it Aconite.

Two problems, one or either of them are causing the problem. Carburetters: The spring loaded over-run valve in ... read more