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loud engine noise, dead coil, overheating, ...

I recently decided to revived my dad's '66 beetle that has been hibernating for close to 4 years. Had to get it to drive 160km to my place where (I hoped) I would slowly restore it.

Anyway, washed carburetor, checked valves, did a bit of timing and attempted to drive it home. Along the way (about 50km), it started missing (is that what its called?), so I stopped and went back to investigate. Engine was very hot (idiot light didn't come on). Let it cool for a while and started it up again.

Another 20 or so km later, a very loud sound started in the engine, sounded like someone pounding on it with a hammer. It also started loosing strength, could hardly pull up a slight hill.

Stopped again, let it rest, tried to start (to investigate the noise) but engine wouldn't start (turns over okay though). Coil was very hot (Bosch blue), got another coil (japanese type) from nearby garage, put it on, engine fired up right away. Had it towed rest of way.

Any ideas what the noise might be? Why would a coil die, what tests can I do, I have both coils with me at work, have a multimeter, how do I test?

Lastly, I will obviously need to rebuild engine, any tips that might come in handy, pulling it today.

Thanks, Joseph

Reply to
klashniv
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bit of an update,

looked up coils on the internet and most implied both secondary and primary windings share the -ve terminal. Did a continuity test on both windings, primary is fine (bosch blue has a 3.5ohms resistance, japanese one has 2.8ohms) but secondary has no response. Did I mention the japanese coil also died?

Joseph

Reply to
klashniv

Get another Bosch coil.

The engine likely overheated. Badly.

Often, after sitting for 4 years, the mice get inside the engine cooling parts and set up home, building dense nests. Sometimes they even steal the seat cushions to build the nest! The end result is that the engine receives no cooling at all and gets badly damaged.

Speedy Jim

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Reply to
Speedy Jim

am a little hesitant to buy a new coil and have it go bad too. maybe I should figure out why the first one died, so I dont just put another one in just for it to die too.

I think my dad made the 6v to 12v conversion as I can see the starter is 12v and the coil too was 12v. Don't know if this information is relevant but you never know.

Joseph

Reply to
klashniv

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