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Jrry, the first thing to do INSTALL A NEW SPARK PLUG,, the number one reason those M�s only run on one cylinder is a fouled or partially fouled spark plug.. If you don�t want to buy a new plug just try swapping the plugs from one cylinder to the other.. If a new plug [or swapping the plugs] doesn�t get that cylinder firing then you will need to run a compression test.. If you have no [or low] compression suspect a burnt valve, or bent push rod, or possibly even worn rings.. If the compression is low try taking an old spark plug,, then breaking the porcelain out of the plug,, then brazing in an air hose fitting that will fit your air hose.. Then turn the engine so both valves on the bad cylinder are closed,, then put the trans in high gear & block the wheels [so the engine doesn�t turn with the air pressure].. Then put about 60-70 psi of air pressure in the low cylinder.. Where the air comes out will tell you what�s wrong & what�s leaking internally.. If the compression is good,, MAKE SURE the bad non working cylinder is sparking at the correct time.. It�s possible to install that distributor incorrectly, then put the plug wire on the wrong cap tower so it will fire only one cylinder but not fire the other cylinder at the correct time.. To check, pull the bad cylinder spark plug,, then place the spark plug in the plug wire & lay on the engine block.. Now have someone crank the engine while you hold your finger over the plug hole,, you need to see that spark plug spark as the compression comes up in that cylinder.. Any questions just post back.. [email protected]
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