HP500 Carbs - blown plug and problem in bottom end at 171 hours?
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Re: HP500 Carbs - blown plug and problem in bottom end at 171 hours?
Originally Posted by WETTE VETTE
Your problem sounds like detonation. Running a motor 5-7 minutes WOT without knowing 100% that everything is perfect with the tune up is asking for problems. You may got both motors into heavy detonation and hammered rod or main bearings out of one of them. I hope I am wrong, but that is what it sounds like to me!! Many factors cause detonation from too hot of plugs, plugs being too loose or bad gas. Good luck!!
What you will need to find out is what caused the detonation. If you do not find out what is causing it you will tear up the next motor just as quick.