Mg tf is not reving over 300 and all four spark plugs are black and the car is drinking fuel and the car blows out lots of black smoke

All questions in this category need full 'year make model', first 3 words and then you have 10,000 categories to choose from listed by 'make year model'.

The MG TF-1500 Midget? A car from my youth!

It has bulbs all over the place and the one you are trying to replace is not specified.

https://www.google.com/search?q=TF-1500

MG TF Bulb Replacement

https://www.google.com/search?q=MG+TF-1500+replace+bulbs


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Next check I'd do is Fuel correct then Spark Plug, if still then Check for a broken or miss aligned ring.
Note:
If the exhaust smoke is blue or gray: Thick blue or gray smoke is an indication of the vehicle burning oil, which means that oil is somehow leaking into your engine'scombustion chamber.
If you have wrong fuel say have 2cycle mix and put in a 4cycle you'll get fouling too.
Hope I helped
Mike

if its black smoke then its a fuel problem too much fuel the car can`t burn it . could be fuel injector over fueling. if its white smoke then its burning coolant, there is a head gasket problem that is damaged in the cyl #3 area. it could also be a bad valve guide/valve seal, oil rings, compression rings. you don`t say what colour the smoke is.

I read your post about your car; as one who has put alot of $$ into your engine rather than having another car payment I asked my significant other who is a real "GEAR-HEAD"; He said if you had the head redone: the plugs are completely black (covered in carbon); the exhaust is as black as the plugs are; most likely the exhaust valves are sticking and the catalytic converter is clogged! He said one sure way to find out is to start it; let it as it is warming up; look under the car at the catalytic converter & see if it gets "RED"; if it is....TADA!! THERE'S YOUR PROBLEM!! GO FROM THERE! ONE REQUEST: Take it to a real mechanic or someone who knows what they're doing; not just taking your wallet to the cleaners! Hope this helps & gets your situation resolved. "REMEMBER, REFLECT, & REBUILD!" Joplin, MO.

either blown head gasket or cracked head, coolant only escapes into motor in two ways, before you replace head gasket again, pull head, have it magnafluxed ( To Show Cracks) if there arenonehave the head resurfaced

black smoke is fuel white smoke is oil. change your spark plugs to a hotter plug and run with some hpr 50 engine oil or somrthing nice and thick

check oil dip stick for water/antifreeze and radiator for oil in antifreeze but usually alot of white smoke-steam from tailpipe usually indicates head gasket blue smoke means oil black smoke carbon

WHITE SMOKE IS BLOWN HEAD GASKET. BLUE SMOKE ENGINE BURNING OIL.DUE TO WORN PISTON RINGS AND WORN VALVE GUIDES.BLACK SMOKE EXCESSIVE RICH MIXTURE.CLOGGED AIR FILTER. FUEL PUMP PRESSURE TOO HIGH.SEVERE MISFIRE.LOW ENGINE COMPRESSION.

SOUNDS LIKE AN ECU PROBLEM IT IS COMMON WITH THAT MODEL

generally speaking it will be oil fowling plugs rather than fuel, but to do it that quickly you should be seeing lots of blue smoke and a sinking oil level. I have seen fuel fowl plugs but generally **** fuel. you should probably check the plugs are the correct ones for the car, all plugs have differing uses and just cause they fit dont make em right. you could also look at the condition of the rest of your ignition system ie condition of leads, coil/coil packs. Another thing you could check it the condition of the throttle body, looking for fuel colouring additive build up, or even wether it is set correctly (obviously a job for diagnostic tool).