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Flummoxed by Suzuki GN250

 
 
The Older Gentleman
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      01-23-2010, 05:15 PM
Every now and again you come up against an odd one. A *really* odd one.

After I'd bought the GN250, I gave it a full service which included
setting the tappets, naturally, and I was getting a slight tick from the
top end.

It sounded exactly like a tappet that was fractionally too wide, though
oddly the noise didn't persist when you revved it hard, but I shrugged
and decided I'd look at it again when I got back from South America.

So this afternoon, I checked the tappets again to see if I'd got one
slightly out, but they all seemed OK. I reset them anyway, towards the
tighter end of the recommended clearance scale.

And damn me, the ticking seemed louder when I restarted it. Much
head-scratching and the odd swear-word.

It's sorted now: source of the noise traced. A virtual pint to anyone
who can guess what it was. A new one on me, certainly.


--
BMW K1100LT Ducati 750SS Honda CB400F Triumph Street Triple
Suzuki TS250ER GN250 Damn, back to six bikes!
Try Googling before asking a damn silly question.
chateau dot murray at idnet dot com
 
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platypus
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      01-23-2010, 05:28 PM

"The Older Gentleman" <(E-Mail Removed)> wrote in message
news:1jcs7q7.rbo7w9m78zeiN%totallydeadmailbox@yaho o.co.uk...
> Every now and again you come up against an odd one. A *really* odd one.
>
> After I'd bought the GN250, I gave it a full service which included
> setting the tappets, naturally, and I was getting a slight tick from the
> top end.
>
> It sounded exactly like a tappet that was fractionally too wide, though
> oddly the noise didn't persist when you revved it hard, but I shrugged
> and decided I'd look at it again when I got back from South America.
>
> So this afternoon, I checked the tappets again to see if I'd got one
> slightly out, but they all seemed OK. I reset them anyway, towards the
> tighter end of the recommended clearance scale.
>
> And damn me, the ticking seemed louder when I restarted it. Much
> head-scratching and the odd swear-word.
>
> It's sorted now: source of the noise traced. A virtual pint to anyone
> who can guess what it was. A new one on me, certainly.


Crocodile?


 
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Pete Fisher
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      01-23-2010, 05:36 PM
In communiqué <1jcs7q7.rbo7w9m78zeiN%(E-Mail Removed) .uk>,
The Older Gentleman <(E-Mail Removed)> cast forth these
pearls of wisdom
>Every now and again you come up against an odd one. A *really* odd one.
>
>After I'd bought the GN250, I gave it a full service which included
>setting the tappets, naturally, and I was getting a slight tick from the
>top end.
>
>It sounded exactly like a tappet that was fractionally too wide, though
>oddly the noise didn't persist when you revved it hard, but I shrugged
>and decided I'd look at it again when I got back from South America.
>
>So this afternoon, I checked the tappets again to see if I'd got one
>slightly out, but they all seemed OK. I reset them anyway, towards the
>tighter end of the recommended clearance scale.
>
>And damn me, the ticking seemed louder when I restarted it. Much
>head-scratching and the odd swear-word.
>
>It's sorted now: source of the noise traced. A virtual pint to anyone
>who can guess what it was. A new one on me, certainly.
>
>


You've got a screw loose.

--
+-------------------------------------------------------------------+
| Pete Fisher at Home: (E-Mail Removed) |
| Voxan Roadster Yamaha WR250Z/Supermoto "Old Gimmer's Hillclimber" |
| Gilera GFR * 2 Moto Morini 2C/375 Morini 350 "Forgotten Error" |
+-------------------------------------------------------------------+
 
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The Older Gentleman
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      01-23-2010, 05:36 PM
platypus <(E-Mail Removed)> wrote:

> "The Older Gentleman" <(E-Mail Removed)> wrote in message
> news:1jcs7q7.rbo7w9m78zeiN%totallydeadmailbox@yaho o.co.uk...
> > Every now and again you come up against an odd one. A *really* odd one.
> >
> > After I'd bought the GN250, I gave it a full service which included
> > setting the tappets, naturally, and I was getting a slight tick from the
> > top end.
> >
> > It sounded exactly like a tappet that was fractionally too wide, though
> > oddly the noise didn't persist when you revved it hard, but I shrugged
> > and decided I'd look at it again when I got back from South America.
> >
> > So this afternoon, I checked the tappets again to see if I'd got one
> > slightly out, but they all seemed OK. I reset them anyway, towards the
> > tighter end of the recommended clearance scale.
> >
> > And damn me, the ticking seemed louder when I restarted it. Much
> > head-scratching and the odd swear-word.
> >
> > It's sorted now: source of the noise traced. A virtual pint to anyone
> > who can guess what it was. A new one on me, certainly.

>
> Crocodile?
>

He's behind you!

--
BMW K1100LT Ducati 750SS Honda CB400F Triumph Street Triple
Suzuki TS250ER GN250 Damn, back to six bikes!
Try Googling before asking a damn silly question.
chateau dot murray at idnet dot com
 
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The Older Gentleman
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      01-23-2010, 05:36 PM
Pete Fisher <(E-Mail Removed)> wrote:

> In communiqué <1jcs7q7.rbo7w9m78zeiN%(E-Mail Removed) .uk>,
> The Older Gentleman <(E-Mail Removed)> cast forth these
> pearls of wisdom
> >Every now and again you come up against an odd one. A *really* odd one.
> >
> >After I'd bought the GN250, I gave it a full service which included
> >setting the tappets, naturally, and I was getting a slight tick from the
> >top end.
> >
> >It sounded exactly like a tappet that was fractionally too wide, though
> >oddly the noise didn't persist when you revved it hard, but I shrugged
> >and decided I'd look at it again when I got back from South America.
> >
> >So this afternoon, I checked the tappets again to see if I'd got one
> >slightly out, but they all seemed OK. I reset them anyway, towards the
> >tighter end of the recommended clearance scale.
> >
> >And damn me, the ticking seemed louder when I restarted it. Much
> >head-scratching and the odd swear-word.
> >
> >It's sorted now: source of the noise traced. A virtual pint to anyone
> >who can guess what it was. A new one on me, certainly.
> >
> >

>
> You've got a screw loose.


I know I have, but what about the bike?


--
BMW K1100LT Ducati 750SS Honda CB400F Triumph Street Triple
Suzuki TS250ER GN250 Damn, back to six bikes!
Try Googling before asking a damn silly question.
chateau dot murray at idnet dot com
 
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Pete Fisher
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      01-23-2010, 05:44 PM
In communiqué <1jcs8wr.1kagdtigaaeeuN%(E-Mail Removed) o.uk>,
The Older Gentleman <(E-Mail Removed)> cast forth these
pearls of wisdom
>Pete Fisher <(E-Mail Removed)> wrote:
>
>> In communiqué <1jcs7q7.rbo7w9m78zeiN%(E-Mail Removed) .uk>,
>> The Older Gentleman <(E-Mail Removed)> cast forth these
>> pearls of wisdom
>> >Every now and again you come up against an odd one. A *really* odd one.
>> >
>> >After I'd bought the GN250, I gave it a full service which included
>> >setting the tappets, naturally, and I was getting a slight tick from the
>> >top end.
>> >
>> >It sounded exactly like a tappet that was fractionally too wide, though
>> >oddly the noise didn't persist when you revved it hard, but I shrugged
>> >and decided I'd look at it again when I got back from South America.
>> >
>> >So this afternoon, I checked the tappets again to see if I'd got one
>> >slightly out, but they all seemed OK. I reset them anyway, towards the
>> >tighter end of the recommended clearance scale.
>> >
>> >And damn me, the ticking seemed louder when I restarted it. Much
>> >head-scratching and the odd swear-word.
>> >
>> >It's sorted now: source of the noise traced. A virtual pint to anyone
>> >who can guess what it was. A new one on me, certainly.
>> >
>> >

>>
>> You've got a screw loose.

>
>I know I have, but what about the bike?
>
>


OK , a long shot based on experience with a SO Talbot van engine.
Exhaust joint gasket (if there is one). On the Talbot it was a tiny blow
in the manifold gasket. Sounded just like a tappet at idle but drowned
by other noise at higher engine speeds.


--
+-------------------------------------------------------------------+
| Pete Fisher at Home: (E-Mail Removed) |
| Voxan Roadster Yamaha WR250Z/Supermoto "Old Gimmer's Hillclimber" |
| Gilera GFR * 2 Moto Morini 2C/375 Morini 350 "Forgotten Error" |
+-------------------------------------------------------------------+
 
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Paul Carmichael
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      01-23-2010, 05:47 PM
On Sat, 23 Jan 2010 17:15:49 +0000, The Older Gentleman escribió:

> Every now and again you come up against an odd one. A *really* odd one.
>
> After I'd bought the GN250, I gave it a full service which included
> setting the tappets, naturally, and I was getting a slight tick from the
> top end.
>
> It sounded exactly like a tappet that was fractionally too wide, though
> oddly the noise didn't persist when you revved it hard, but I shrugged
> and decided I'd look at it again when I got back from South America.
>
> So this afternoon, I checked the tappets again to see if I'd got one
> slightly out, but they all seemed OK. I reset them anyway, towards the
> tighter end of the recommended clearance scale.
>
> And damn me, the ticking seemed louder when I restarted it. Much
> head-scratching and the odd swear-word.
>
> It's sorted now: source of the noise traced. A virtual pint to anyone
> who can guess what it was. A new one on me, certainly.


Tappet too tight, piston hitting valve.

--
Paul.
CBR1100XX SuperBlackbird (Buen mueble de patio), Orbea Dakar
BOTAFOT #4 BOTAFOF #30 MRO #24 OMF #15 UKRMMA #30
http://paulcarmichael.org/ (content pending)
 
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The Older Gentleman
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      01-23-2010, 05:51 PM
Mark Olson <(E-Mail Removed)> wrote:

> Loose joint at the header pipe?


Good call, and I checked that myself, but no.


--
BMW K1100LT Ducati 750SS Honda CB400F Triumph Street Triple
Suzuki TS250ER GN250 Damn, back to six bikes!
Try Googling before asking a damn silly question.
chateau dot murray at idnet dot com
 
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The Older Gentleman
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      01-23-2010, 05:51 PM
Paul Carmichael <(E-Mail Removed)> wrote:


> Tappet too tight, piston hitting valve.


<offended>

I'm not *that* much of a bodger.


--
BMW K1100LT Ducati 750SS Honda CB400F Triumph Street Triple
Suzuki TS250ER GN250 Damn, back to six bikes!
Try Googling before asking a damn silly question.
chateau dot murray at idnet dot com
 
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The Older Gentleman
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      01-23-2010, 05:51 PM
Pete Fisher <(E-Mail Removed)> wrote:

> OK , a long shot based on experience with a SO Talbot van engine.
> Exhaust joint gasket (if there is one). On the Talbot it was a tiny blow
> in the manifold gasket. Sounded just like a tappet at idle but drowned
> by other noise at higher engine speeds.


Like Mark Olson, a bloody good call, and I know what you mean, but no,
it wasn't this. It was one of other things I checked, though.


--
BMW K1100LT Ducati 750SS Honda CB400F Triumph Street Triple
Suzuki TS250ER GN250 Damn, back to six bikes!
Try Googling before asking a damn silly question.
chateau dot murray at idnet dot com
 
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