A little help please!

[ronniesma]

I have a 1300 bug and at the moment I am having a major problem with the engine backfiring (I'm getting actual fire!) and it's shaking and jerking all over the place!

Don't think it's the carb as it's just been taken off and cleaned. Does anyone have any ideas?

[Wedge G]

I had the same sort of problems with an old beetle of mine.
It turned out to be a cracked valve.