Recent content by Ramman1505

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    Thunderbolt IV issue?

    I agree with you when the engine is running, however when you shut the engine down, the manifolds heatsoak with no cooling. I have touched the module after sitting for a few minutes and it's to the point where I can't keep my hand on it. This is when the issue seems to arise.
  2. R

    Thunderbolt IV issue?

    I have looked thru the troubleshooting guides before. Like you had mentioned, intermittent spark issues are hard to troubleshoot with those guides. Sounds like a ground check, and new ignition sensor are a good starting place. My guess is the module us the culprit as it gets super hot mounted to...
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    Thunderbolt IV issue?

    Good thoughts here. I will certainly check all grounds. I'm just so confused because if I can get it past this rpm, which at times I can, it runs like nothing is wrong. It never misses when throttling down, not once. It's only right at 2700 rpm, when throttling up, when warm. Very odd. You are...
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    Thunderbolt IV issue?

    I really don't see how it would be a fueling issue. When the boat is cool it runs like new with great power. I inspected the cap and rotor and all seemed well. It really seems to be some type of spark issue when warmed up. Perhaps the ignition sensor could be the culprit. I had also considered...
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    Thunderbolt IV issue?

    Last year I was out on the water for about 30 min no issue. I shut the boat off and we floated for a bit. When I started the boat back up I couldn't get up on plane. The engine would get up to around 2700 rpms, then it felt a few cylinders had dropped out. I noticed when this happened, the tach...
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