This thread is going around the world- from Lotus owners forums in Alaska to Skyline owner forums in New Zeland:

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Well, I've been searching around quite a bit lately and found a ton of useful info, but I think I ran into a slight problem.

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Ok.

My buddy said I should flush my engine after I got it in top running condition

(which is was in).

I drained out all my oil and kept the little screw guy out of the bottom of the big metal tank and then poured in a couple gallons of boiling water to clean everything out, which flowed the water out.

I put the screw back in, and I let it sit for a couple minutes, put in slick 50 and then started it for the 2 minutes that my buddy said to do and kept it at 5k rpms.

My motor then starting making this really loud knocking noise, which followed with a loud bang, and the engine shut off.

I'm afraid to try and restart it.

What do you think it could be?

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That is just one post from a 9 page thread, it is the funniest thing I've ever seen.

Thread here:
http://forums.vwvortex.com/zerothread?id=1703095&page=1