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i figured it out ... was a bad dist.cap put a new one in and she runs perfect!

hi everyone, new to the site and looking for a little help. i have a 97 tahoe 5.7l 4wd. the problem is a popping/detonation in the intake that travels out the tailpipe at 1500-200rpm only under load. it seems to get worse as the vehicle warms up. the engine has 182,000 and purrs....this is whats...