- 66
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- 33
- Location
- Liberty Hill, TX
Let my hmmwv sit for a few weeks and on startup immediately heard a new noise. This happens for the first minute or so, maybe only while the glow plugs are cycling? Once warmed up I drove it around for 10 minutes and didn't hear it again. Let it sit overnight and started up again and same thing, popping/clacking sound for the first minute or two then nothing. Almost sounds like marbles slamming together. Any recognize this or have ideas? Haven't had time to troubleshoot yet, first thought was maybe the belt tensioner so I'll pull the belt and check that out tomorrow.
www.youtube.com
edit: from this second angle looks like the belt almost jumps off with the noise.
youtube.com
![www.youtube.com](https://i.ytimg.com/vi/JRHqvn3PpT4/oar2.jpg?sqp=-oaymwEkCJUDENAFSFqQAgHyq4qpAxMIARUAAAAAJQAAyEI9AICiQ3gB&rs=AOn4CLCjj0LitSp9-c580k4A4f7q3w50LQ)
HMMWV startup
edit: from this second angle looks like the belt almost jumps off with the noise.
![youtube.com](https://i.ytimg.com/vi/nWxn8y9F0PQ/oar2.jpg?sqp=-oaymwEkCJUDENAFSFqQAgHyq4qpAxMIARUAAAAAJQAAyEI9AICiQ3gB&rs=AOn4CLBV1bL7gRI3haqmk6_-gYPgN6A_FQ)
Another angle
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