My 72 mav 200 6cyl up an quit running a few minutes ago. It started fine drove about 200yard and quit. It was sluggish before it quit and now it will turn over and it is getting fuel and spark. I replaced the coil, condenser, plugs and wires about a year ago. i have the same problem it was a bad coil, and now I do know what it could be. I am wondering if any mav pros can help me.
is it starting at all? if not check the timing, run compession test, and vacume for a leak. thats all I can think to check.
Could be flooded..or maybe the choke is on to tight(open choke manually & try to start) or a major dirty aircleaner..otherwise if you have spark and fuel I would think timing. How fast is the starter turning? If its slow that may be a clue..weak battery
Have you done any checking to see is it's fuel or spark? Both are easy to to. A little gas poured in the carb and spark check from one wire.
I'd check the timeing. Almost sounds like your distributor slipped. My F250 did that a couple of years ago.
I have not had time to do any troubleshooting on it. A friend of mine got the shock from the coil and you can smell the fuel. The last owner told me it had about 330,000 miles. My odometer reads 41,200 i am guessing 341,200.
341,000? I'm changeing my vote to timeing chain. I would start thinking about dropping in a new or lower mileage engine, or a good rebuild. Just because the coil bites you dosen't mean it's produceing a sufficient spark at the correct time.
was the engine making any strange sounds when it ran last? Based on the coil and fuel being good Definately check the point and condensor set, cap and rotor, spark getting to the plugs, the timing. If you suspect the timing chain has slipped you can check that two ways depending on how well you know your engine.you can crank it by hand to the timing mark for where it is supposed to fire then pull the dizzy cap and make sure the rotor is pointing to where it should be on the cap (if you havent already moved it). the other is to pull number one plug and the valve cover. then rotate the engine by hand and make sure the valves are where they should be for the piston being near/at tdc. a degree or two off should still run so if it isnt runing from the timing chain being off, you should notice a difference. hope that helps
That must have been one good engine with over 300,000 miles on it. And it keeps going and going and going and going. Its time to let go and rebuilt or newer engine.
Respectfully you must do some testing to find out what has happened. For timing chain check there are 2 things to look at. Pull #1 plug out and rotate engine so the piston is up on compression then make sure piston is up to top as close as you can get it then look at the crank pointer. It should be lined up with zero pretty close. If more than about 10* off the cam timing has jumped and the engine has to come apart for repairs. Secondly the distributor rotor must point to #1 cap post. If it does not, the cam has jumps time.
FIXED IT after all the hair pulling what little i have. I has checking the points and the condenser they check good i was getting spark there. notice a vacuum line off my vacuum advance, hoping maybe that was it NO. Bumping the start of the soleinod I heared a popping from around my coil? It turns out the the coil wire at the coil had backed off enough to spark but not enough to keep running.
Just when you start expecting the worst, it turns out to be something stupid. Gotta love it. I've mistakenly left the coil wire completely off before. Scratched my head for over an hour before catching it out of the corner of my eye. Now run it till shes dead. Maybe we need to start a high mileage 6 cylinder club? I've got 203,000 on mine.
