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Tech Manual
The complete tech manual encompassing all of Johns MG guides.
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Barrie's Notes -
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MG Factory DVD -Factory Training Films #1, "Pride of Abingdon", "MG Midget Then and Now", "MGB Features", and "Scheduled Maintenance".
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Talking Tour of MGB MKIV - A complex overview of the Mark IV MGB, with detailed instructions of owner operation and some maintenance.
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Under Construction
September 29th, 2008
Q & A: throttle open?
Monday January 02nd, 2006
John,
I'm helping the kid next door with his 77 MGB. As soon as the engine starts, it goes to full throttle. We installed a carb kit with all new gaskets, O rings, and a new diaphragm, but the rams still do not respond to the linkage. The butterfly valve opens and closed correctly. How can the engine over rev. when this valve is closed? Piston and damper also seem to be working. I have a 76 Spitfire with a similar crab, but it has never acted like this. I would appreciate any help.
Ray
Ray!
The throttle must still be open! OR, the spring loaded deceleration valve in the butterfly must be weak or jammed open. Unscrew both adjuster nuts for the throttle cable. Make certain the throttle disc closes ALL the way! Ma... read more
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#152 1957 MGA Engine
Tip of the Day
It makes no difference how quickly your MG will accelerate if it cannot
stop! The proper functioning of your brakes must ALWAYS be at the
top of your list of priorities. You owe this degree of safety to yourself,
your passenger, and all others on the road.
John H. Twist (Fall, 1980)