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Joined: Jul 2007
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Salty Sea Dog
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Salty Sea Dog
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You aren't switching it off while the engine is revving??


Graham (G4FUJ)

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Oh no. I wait until it slows to idle. I just don't wait long enough for it to idle out all the excess from revving.


'67 +4 tourer - broken white - RHD
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Salty Sea Dog
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Ah. My neighbour insists on switching off when it's at the peak of revs. Guess it doesn't matter overmuch with fuel injection, but not good with carbs.


Graham (G4FUJ)

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The slightest amount of fast idle can cause dieseling with carbs and modern fuel.
MGB's are very sensitive to this. Below 800rpm is better, but idle may be lumpy.


DaveW
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Check the timing and make sure idle speed is low enough.


'65 +4 four seater
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