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First start, weird metal on metal noise. Autolube?

  • Erin Grey
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First start, weird metal on metal noise. Autolube? was created by Erin Grey

So I got the DT400 running, feels like it’s running good, but there’s a noise I dislike. Some prior owner added some weird stuff to the oil line. Maybe years of four strokes has me freaked out for no reason? I’ll be replacing the oil line. If my video loaded, does it sound right? Thanks!
02 Jul 2022 14:37 #1

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Replied by MarkT on topic First start, weird metal on metal noise. Autolube?

You have to post video to YouTube or Vimeo or someplace and link it here. 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
02 Jul 2022 15:14 #2

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Replied by Sneezles61 on topic First start, weird metal on metal noise. Autolube?

Well to start with… the oil pump will keep the bike running IF you know it’s working… just hoping won’t get you far down the road…. I would not run it until you know it’s correct, or are using mixed gas…
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02 Jul 2022 16:39 #3

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Replied by Erin Grey on topic First start, weird metal on metal noise. Autolube?

youtube.com/shorts/8i50Wlb4Hh4?feature=share

i hope this works. Learn motorcycle AND YouTube in the same day!

Last edit: 02 Jul 2022 17:54 by MarkT.
02 Jul 2022 17:11 #4

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Replied by RT325 on topic First start, weird metal on metal noise. Autolube?

Good audio in the vid thanks. Sorry to say but there's lot of piston clearance overpowering other noises, but probably bearing noises in amongst it. So actualy alloy to metal noise. Cylinder off to look i'm afraid. Happy days--not. Welcome from NZ if ya new!!.
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02 Jul 2022 17:48 #5

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Replied by Erin Grey on topic First start, weird metal on metal noise. Autolube?

Thanks for the reply and verification. Darn it!
03 Jul 2022 05:40 #6

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Replied by MarkT on topic First start, weird metal on metal noise. Autolube?

I think you are very wise to remove the shut off valve and filter from the oil line.  They could have starved the pump of oil which may have contributed to the wear you're hearing now. 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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03 Jul 2022 06:01 #7

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Replied by Tom P on topic First start, weird metal on metal noise. Autolube?

Sorry about the bad news, and I just wonder what the previous owner was thinking, putting a filter on that line? It's only clean oil, it's not like it's being exposed to contaminants and being recirculated, as engine oil is. I hope whatever is wrong turns out to be something that's easily repairable.
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03 Jul 2022 08:13 #8

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Replied by Erin Grey on topic First start, weird metal on metal noise. Autolube?

Thanks. That was why I was wondering about lubrication. I looked at that setup and wondered why. The line appears smaller than stock to the valve 
03 Jul 2022 08:46 #9

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