i had a tick that turned in to a loud knock?

1994 GMC SONOMA
20,100 MILES
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SNOWMOBI13
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i have a 94 sonoma 4x4 with the 4.3 motor. and i took it through some deep mud had it in first gear and 4 low. and got stuck and after i got out i noticed my oil gage bonceing around. so i parked it and i had a ticking noice. i ended up driving it 20 miles home and it turned in to a real loud knock, thinking it was my motor i took a stethoscope to all the cylenders when it was running and hurd no noise but when i touched it to the inspection plate u could hear the knocking. so i took the inspection plate off to find out the fly wheel was hitting the side of it. but i dont see any cracks in the fly wheel and there is no play. what could this be?
Sep 20, 2011 at 1:22 AM
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JACOBANDNICKOLAS
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Does it still make the knocking noise with the plate off?
Sep 20, 2011 at 2:01 AM
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SNOWMOBI13
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Never started it after I took it off cuz I drained the oil to see if there were shaveings in it. So tomarow I am gonn put some oil in it and start it. If there is no noise what would be wrong with the fly wheel? U think it worped it?
Sep 20, 2011 at 2:12 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
It may have cracked. Before starting it, check for cracks. Also, make sure it didn't come loose. If it was hitting the inspection plate, those are my guess.

Let me know.
Sep 20, 2011 at 3:14 AM
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