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Vespa Si Problems
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Curtis
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Oct 11, 2001 10:07 PDT
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I have a 1980 Vespa Si moped. It had 82 miles on it when I bought it in
July, and ran great. Around 800 miles there started to be some
backfiring at
high speed. Also top speed was slower (flat ground went from 29mph to
24mph)
around the same time. The problem continued and at around 1100 miles I
was
going down hill when there was a BIG backfire which screwed everything
up to
the point where you could not accelerate at all. I took it to a local
small
engine shop, and they got it running again. There still seems to be some
small backfiring at high speeds and top speed is still not up to what it
used to be. The shop said I might try to replace the spark plug cap,
because
it may be arching, causing the problems I'm having. What are some of
your
opinions on how to fix this problem?
-Curtis
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