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motoqueiro
PostPosted: 18 Sep 2012 20:03 
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I really can't explain very well, it's like a tic tic tic, kind like when the metal is cooling down
that only happens on heavy acceleration, and is something that is very rapid tictictic
can it be detonation???
sorry if it sound stupid

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pash
PostPosted: 18 Sep 2012 20:23 
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Knocking... Pinking... Detonation...

Check fuel octane number and ignition timing...

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Ash
PostPosted: 18 Sep 2012 21:08 
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I get that a lot (its a scared screaming sound :oooops: )

Sorry Chief

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motoqueiro
PostPosted: 19 Sep 2012 20:02 
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Its 95 octane for 7 years now
going to check the timing
thinking of the octane, it can be because the low cost fuel I'm feeding her
thanks pash

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spen
PostPosted: 21 Sep 2012 09:37 
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Does it alter as the revs rise and fall?

Does it alter with road speed?

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motoqueiro
PostPosted: 21 Sep 2012 17:40 
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it only occurs when the ambient temperature is extremely hot, and let's say, I'm cruising at 3000 rpm and give it a full throttle, that's when it starts, as soon the rpm stabilizes or I reduce throttle it stops.
doesn't matter the gear or speed im doing, it's only on hard acceleration

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spen
PostPosted: 21 Sep 2012 17:54 
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I'd rather race a Honda 90

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Yep. Seems like pinking could be the culprit..... always worth checking other avenues though......

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Adam
PostPosted: 21 Sep 2012 17:58 
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motoqueiro wrote:
it only occurs when the ambient temperature is extremely hot, and let's say, I'm cruising at 3000 rpm and give it a full throttle, that's when it starts, as soon the rpm stabilizes or I reduce throttle it stops.
doesn't matter the gear or speed im doing, it's only on hard acceleration


This is the classic scenario for this to happen. As has been said before, check your timing. Your motor will be grateful ;)

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motoqueiro
PostPosted: 21 Sep 2012 18:24 
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Ok, so, apart from the timing what should I also take a lock at

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spen
PostPosted: 21 Sep 2012 20:14 
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I'd rather race a Honda 90

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Fuel quality.... :?:

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motoqueiro
PostPosted: 22 Sep 2012 13:09 
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ok, the timing is spot on, must be the fuel grade
thanks guys :yup:

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motoqueiro
PostPosted: 22 Sep 2012 14:23 
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a photo from the spark plugs. they seem good to me
Image

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Maz
PostPosted: 22 Sep 2012 14:31 
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What make/grade are those plugs ?

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motoqueiro
PostPosted: 22 Sep 2012 17:08 
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they are the harley 10R12A ones

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Maz
PostPosted: 22 Sep 2012 17:14 
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That's OK then ;)

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