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  1. M

    The effects of bad/old gas or gas with water in it...

    Dumb question...Would old/bad/contaminated/poorly mixed gas ran in a 1975 Merc 7.5 cause operation (or lack thereof) that mimicks bad compression or a dirty carb? Let me rephrase that...Can anyone give me a list of variables to check before having to go grab the tool box and start taking things...
  2. M

    Mercury 7.5 question...

    I have a 1971 7.5 merc with roughly 8000 hours on it. I keep up on maintainence (impellers, carb, etc...) but have come across a new problem and am stumped. The last time I had it on the water it started on the first pull and ran great for a couple of hours, then it started getting rougher...
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