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  1. Overheating, cooling or exhaust system issue?

    Gear & Maintenance
    Just when I had my A4 running like a top she has blessed me with another mystery problem. Here is the rundown: Last week I was heading out for a quick little ride. On my way out of the harbor my boat started acting strange and engine speed started fluctuating (around 1500-1700rpm.) All of a...
  2. Cooling System Sealant K-Seal

    Gear & Maintenance
    Does anyone have any experience using a cooling system sealant called K-Seal? I'm thinking of using it to help address a leak in my cooling system. K-Seal | K-Seal HD - Solv-Tec K-Seal - Permanent Coolant Leak Repair The product claims to "permanently seal most cracks in the engine block and...
  3. Yanmar 2QM15 Overheating Problem

    Okay here is my problem... After cold starting my 2QM15 everything runs fine for five minutes. Then the dreaded temperature alarm sounds and it is time to shut the motor off. I have taken several troubleshooting steps as discussed here on other threads. First I back flushed the intake side of...