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  1. D

    temperature gauge question

    1990 mach 1 .....350 magnum mercruiser..........when i start my boat,after about 5 minutes the guage jumps to around 220 and doesn't move..up or down....what could this be or what should i check first
  2. D

    how to tell what kind of cooling system i have

    how do i tell what kind of cooling system i have.......not really a mechanic, limited knowledge........i have a 90 mach 1 with a 350 magnum mercruiser
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