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Help Me Diagnose
OP
Jeremy W
Wed, 05 Nov 2008 16:20:14 +0000
Molto Verboso
79 P200e, 81 100 Sport
Joined: Sat, 23 Sep 2006 20:35:56 +0000
Posts: 1443
Location: Iowa
 
Jeremy W
Molto Verboso
79 P200e, 81 100 Sport
Joined: Sat, 23 Sep 2006 20:35:56 +0000
Posts: 1443
Location: Iowa
Wed, 05 Nov 2008 16:20:14 +0000 quote
This started immediately after I changed my gear oil...

Scooter starts and runs fine. Shifts from N to 1 fine, but when I take off I get this "jingling" sound. Sounds like loose change bouncing around in the engine. I'm assuming this isn't good. Gets louder the faster I go.

Also, when in Neutral if I roll the bike, engine off, it makes a noise I haven't hear before. Like a gear winding, noise. Like it's not completely in Neutral. Although the bike doesn't seem any harder to push.

My complete lack of experience and knowledge says "clutch" to me.
Rover Eric
Wed, 05 Nov 2008 16:37:40 +0000
Moderator
1965 Vespa SS180, 1963 Lambretta LI150
Joined: Mon, 05 Mar 2007 14:05:05 +0000
Posts: 6980
Location: Detroit, Michigan
 
Rover Eric
Moderator
1965 Vespa SS180, 1963 Lambretta LI150
Joined: Mon, 05 Mar 2007 14:05:05 +0000
Posts: 6980
Location: Detroit, Michigan
Wed, 05 Nov 2008 16:37:40 +0000 quote
gets louder the faster you go? man ...that's really strange. Most engine noises i have get covered up by the sound of the exhaust and wind and stuff at higher speeds ... i have to listen carefully with my helmet off at low speeds.
VLBJS1
Wed, 05 Nov 2008 16:40:09 +0000
Ossessionato
Joined: Tue, 23 Sep 2008 17:31:41 +0000
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VLBJS1
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Wed, 05 Nov 2008 16:40:09 +0000 quote
What kind of gear oil did you use?
OP
Jeremy W
Wed, 05 Nov 2008 16:43:02 +0000
Molto Verboso
79 P200e, 81 100 Sport
Joined: Sat, 23 Sep 2006 20:35:56 +0000
Posts: 1443
Location: Iowa
 
Jeremy W
Molto Verboso
79 P200e, 81 100 Sport
Joined: Sat, 23 Sep 2006 20:35:56 +0000
Posts: 1443
Location: Iowa
Wed, 05 Nov 2008 16:43:02 +0000 quote
Perhaps the noise just gets "faster" not "louder".

First I used SAE 30 5W-30 then I figured this was wrong. I drove the bike probably 6 miles with this. That's when the nosie started. I then changed it out after I got some straight SAE 30, it's Mobil brand.
VLBJS1
Wed, 05 Nov 2008 16:47:26 +0000
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VLBJS1
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Posts: 2633
Wed, 05 Nov 2008 16:47:26 +0000 quote
Hmmm...maybe that's your problem and that the gears weren't lubed right and higher temps? I like Motul Transoil full synthetic 10w30...shit is the best.
Jake Rover
Wed, 05 Nov 2008 18:55:34 +0000
Member
61 Allstate, 1959 LI 150 Series 1
Joined: Mon, 03 Nov 2008 18:03:55 +0000
Posts: 11
Location: Windsor, Ontario, Canada
 
Jake Rover
Member
61 Allstate, 1959 LI 150 Series 1
Joined: Mon, 03 Nov 2008 18:03:55 +0000
Posts: 11
Location: Windsor, Ontario, Canada
Wed, 05 Nov 2008 18:55:34 +0000 quote
maybe by using a detergent oil, you broke some crud from the inside of the engine loose and it's now rattling around in there?

Do you have a magnetic drain plug? If it is metal filings, that might help reduce the problem?

Have you changed your oil since? If not, try that, and see if there is anything that comes out with the oil.
Thom
Wed, 05 Nov 2008 19:14:27 +0000
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Joined: Wed, 30 Jan 2008 23:56:03 +0000
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Thom
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Wed, 05 Nov 2008 19:14:27 +0000 quote
Your oil most likely is not the problem...just a coincidence.

Could be cush gear springs....could be something completely unrelated like a loose exhaust clamp.

I had a broken cush gear gear spring that rattled for 3 years in my 79 P2 motor without ever causing a problem.
Just fucking annoying.

Drain your oil as suggested & look closely at what comes out.
Look for metal shavings, chunks of gear teeth,etc..

You will have to climb around the bike sans helmet & listen very closely for where it comes from while pushing the bike around.
Good luck.
Rover Eric
Wed, 05 Nov 2008 19:16:46 +0000
Moderator
1965 Vespa SS180, 1963 Lambretta LI150
Joined: Mon, 05 Mar 2007 14:05:05 +0000
Posts: 6980
Location: Detroit, Michigan
 
Rover Eric
Moderator
1965 Vespa SS180, 1963 Lambretta LI150
Joined: Mon, 05 Mar 2007 14:05:05 +0000
Posts: 6980
Location: Detroit, Michigan
Wed, 05 Nov 2008 19:16:46 +0000 quote
Thom wrote:
Your oil most likely is not the problem...just a coincidence.

Could be cush gear springs....could be something completely unrelated like a loose exhaust clamp.
agreed
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