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Derbi Senda Oil Help

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HD
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PostPosted: 19:32 - 11 Dec 2010    Post subject: Derbi Senda Oil Help Reply with quote

My bike is chucking out oil. Its pouring out of the exhaust, over the holder, down the exhaust, onto the swingarm, onto the chainguard, oily spark plugs, making the bike run shit!

Grrr!

Can anyone help tell me how to adjust the oil pump. It is clearly throwing out too much oil. Teh father adjusted the cable but it seems mostly the same... Just need to know how to lean the mixture!

Help Sad
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HD
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PostPosted: 20:43 - 12 Dec 2010    Post subject: Reply with quote

Cheers for the help. oN A VERY close look we saw that there are two faint lines and one on the actual bike. The two are on the oil pump on the bit that moves. I have put the line on the bike in between the two and it just about perfect smokiness, gonna see if it runs down the bike now and then adjust it if it does, if not leave it.

So just to summarise if anyone else does end up with the same problem:

Arrow Loosen the cable
Arrow Adjust the oil pump so the two faint lines are by the ones on the actual bike (left hand side of the oil pump section)
Arrow Re-tighten cable

Yes as simple as that and it was a lingering problem for weeks!
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satans_BIG_helper
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PostPosted: 21:43 - 12 Dec 2010    Post subject: Reply with quote

One of those lines should be for when the throttle is closed and the other mark WOT (wide open throttle),

if the marks are far apart that is, if they are narrow lines then it should be for when the throttle is closed but on some italian bikes i have seen the mark be for when its on WOT.
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HD
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PostPosted: 22:45 - 12 Dec 2010    Post subject: Reply with quote

satans_BIG_helper wrote:
One of those lines should be for when the throttle is closed and the other mark WOT (wide open throttle),

if the marks are far apart that is, if they are narrow lines then it should be for when the throttle is closed but on some italian bikes i have seen the mark be for when its on WOT.


The two lines are about 1cm maybe even less apart. Probs about 8mm. I imagine one is for less oil, one is for more. Over or under either is extreme, that is what I think.

Ill get a pic and edit it tomorrow to show you what I mean.

And the bikes spanish Wink

I used to think it was Italian Embarassed
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truslack
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PostPosted: 23:36 - 12 Dec 2010    Post subject: Reply with quote

HD wrote:

And the bikes spanish Wink


With an italian engine and oil pump, japanese forks, largely italian electrics etc
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HD
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PostPosted: 19:07 - 13 Dec 2010    Post subject: Reply with quote

truslack wrote:
HD wrote:

And the bikes spanish Wink


With an italian engine and oil pump, japanese forks, largely italian electrics etc


Well some cockhead on here told me it was spanish! Laughing

Yes, gullible is written on the ceiling Wink
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truslack
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PostPosted: 19:15 - 13 Dec 2010    Post subject: Reply with quote

Derbi are spanish, the bike may even have been assembled there, but Minarelli (am6 engine) are italian, Showa (forks) are Japanese, etc.
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cheekythomas
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PostPosted: 22:34 - 13 Dec 2010    Post subject: Reply with quote

Why do people keep confusing derbi as running a AM6 engine?? Derbi run derbi engines... Not AM6s!!

The old engine was built by Derbi, the newer DB050 is built by piaggio, neither were built by minarelli.

Also if it's really oily, make sure you a decent oil, if it's the newer engine it should be a fully synthetic to make it all burns off cleanly.
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truslack
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PostPosted: 22:50 - 13 Dec 2010    Post subject: Reply with quote

The engine in my derbi was identical to my Am6 engined rS50, thus its italian, by design if nothing else.
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HD
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PostPosted: 08:50 - 14 Dec 2010    Post subject: Reply with quote

cheekythomas wrote:
Why do people keep confusing derbi as running a AM6 engine?? Derbi run derbi engines... Not AM6s!!

The old engine was built by Derbi, the newer DB050 is built by piaggio, neither were built by minarelli.

Also if it's really oily, make sure you a decent oil, if it's the newer engine it should be a fully synthetic to make it all burns off cleanly.


Certainly is sir! Silkolene Comp 2 Smile
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cheekythomas
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PostPosted: 13:08 - 15 Dec 2010    Post subject: Reply with quote

truslack wrote:
The engine in my derbi was identical to my Am6 engined rS50, thus its italian, by design if nothing else.


Well your senda had a different engine fitted... Derbi have never used the AM6 engine... ever.

So you had a home built, or just never looked hard enough. Wink
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truslack
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PostPosted: 13:50 - 15 Dec 2010    Post subject: Reply with quote

cheekythomas wrote:

Well your senda had a different engine fitted... Derbi have never used the AM6 engine... ever.

So you had a home built, or just never looked hard enough. Wink


Having done more research, I stand corrected (although a lot of the castings are identical, as are the mounting points). They still use the same electrics though Laughing
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HD
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PostPosted: 18:54 - 15 Dec 2010    Post subject: Reply with quote

Been talking to my dad and he wondered if when I had the cylinder rebored and a slightly larger piston if the bore is now too big for the rings so it is letting it through more.

What you lot think?
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