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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: Adjusting the Mixture
Tuesday July 03rd, 2007
John,
I have a 1977 MGB. I recently replaced the o-ring on the needle holder in the piston. It wasn't holding oil. My question is on adjusting with the moss tool. Should the carb vent hose be connected? Also, do you screw the course idle nut and the brass fine idle screw all the way closed when adjusting the needle or lifting the piston (air cleaner on) to check for lean or richness? I have the Damn ZS Carb article that you sent me, but it doesn't say where to position the idle nut and screw. Thanks for your help,
Don
Don,
I always close down the air bleed -- that's the coarse and fine adjustment on the right side (facing the carb) of the carb. That adjustment is used to meet idle emission specs, and since there are no emission specs to meet i... 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)