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92 7.4 King Cobra loss of power and overheating

reawillplay

New member
'92 7.4 King Cobra 454 engine. Everything seems fine when you start out. You can run at any speeds for about 5 minutes. After that the boat will start to overheat and at about 2000 rpms there is a loss of power and the engine shakes a lot. I have replaced the cap and rotor and plugs. This did not help. Any ideas I am totally at a loss here.
 
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