Are there ignition problems in a 1972 MGB Roadster?
Are there ignition problems in a 1972 MGB Roadster?
The last two years with our 1972 MGB roadster have been rather fraught with ignition problems, first one new component failing and then another within the distributor. The car was totally refurbished in 2005/6 in an attempt to build in reliability. The original 25D4 distributor was retained but with new leads, cap, rotor, points and condenser.
Why does my MGB have a backfire problem?
My B had the problem you described and it has been tracked to extreme throttle shaft (and carburetor body) wear. It is possible that the backfire and poor running are related to lean mixture since tuning with vacuum leaks becomes arbitrary. This thread is from the archive.
What to do if your MGB has a vacuum leak?
In addition to a vacuum leak, check out your distributor rotor. Many on the market today are high in carbon and can cause your ignition system to seek the closest path to ground.Look for a red rotor at your auto parts store. These are specially made out of low carbon plastic.
Why does my MGB engine take so long to start?
I fixed my oil leak – turned out it was the rubber gasket on the oil filter bracket, nice and easy once I’d realised where the leak was coming from. However, I’ve now got other problems. The engine is lumpy and takes a while to start.
The last two years with our 1972 MGB roadster have been rather fraught with ignition problems, first one new component failing and then another within the distributor. The car was totally refurbished in 2005/6 in an attempt to build in reliability. The original 25D4 distributor was retained but with new leads, cap, rotor, points and condenser.
What causes a misfire code on one side of the engine?
Catalytic Converter. One of the most common problems that will cause misfire codes on one side of the engine is a clogged catalytic converter. This issue only applies to vehicles that have two catalytic converters, one catalytic converter for each bank. A catalytic converter that is completely or partially clogged will restrict the exhaust gases.
What causes weak mixture in MGB under acceleration?
Weak mixture is normally flat spots and hesitation, not backfiring i.e. when the carb damper is not functioning. Test those by unscrewing them and lifting them up, then pressing them down. You should feel the pressure of the oil in the damper before the cap reaches the piston cover.
What was the point gap on my MGBs?
The rescue mechanic had worked on MGBs in the past & confidently stated that it must be the points gap – which he reset. This fix lasted about 3 miles from Stocksfield to Wylam; after that we were trailered back to Newcastle. The points were severely pitted and new points, condenser and a new earth wire fixed the problem – but only for a while.
