3,200 RPM anyone ?

[Horst]

I'm really starting to love this 2002 ST11 I have. Since day one I've noticed a small rough spot around 3,200 rpm - is this normal ?

I feel it a bit in the handlebars, and a bit in the pegs ... above 3,500 it's pretty much gone and all is wonderful ... normal ? ... thanks !

[Don-STOC237]

That's a known feature on all ST1100 engines. It's been present on all three of the ST1100's I've owned. Something to do with a harmonic vibration at those rpm levels.

[Simon Soh]

hi horst,

it shouldnt have any rough spot at all.

check your intake manifolds if it's properly tighten(it's went loosen after few months) & have your carburettor bicely synchronised at cruising temperature.


I'm really starting to love this 2002 ST11 I have. Since day one I've noticed a small rough spot around 3,200 rpm - is this normal ?

I feel it a bit in the handlebars, and a bit in the pegs ... above 3,500 it's pretty much gone and all is wonderful ... normal ? ... thanks !

[miller205]

I have also heard reported that reducing slightly the engine oil level can help. The reason is not clear to me, but others have had success by not filling the oil level to the middle of the sight glass, but only 1/4 of the way up. I think the carb synch wuould help, aslo.

[Marshal_Mercer]

I'm really starting to love this 2002 ST11 I have. Since day one I've noticed a small rough spot around 3,200 rpm - is this normal ?

I feel it a bit in the handlebars, and a bit in the pegs ... above 3,500 it's pretty much gone and all is wonderful ... normal ? ... thanks !

I think that most of us have experienced a "flat spot"/hesitation about 3,200 RPM. Mine goes away when I use Chevron gasoline. Others have reported the same thing. When I have switched to another brand, the hesitation resumes. Another tank of Chevron and it's gone. I have no idea why it works, it just does.

Cheers,

Marshal

[Horst]

.... Chevron gas and possibly a carb synch may be in order.

I wrote this initial post before I discovered that my upper fork bolts were loose (!) and had not ridden the bike since. Any day now she's going back on the road and well put this all to the test :03biker: :03biker:

[Simon Soh]

yes, u r right.

i once experienced degraded fuel from JB, Malaysia, my so call 'freindly neighbour'.

my idling was the worst for a 4months old ST1100 & unable to synchronise it nicely myself, i realised it when i refuel it with fresh gas in Singapore, all plm gone.... :mad:

i follow up with synchronising my carbs again & she'ssssssss........... :04biker:



.... Chevron gas and possibly a carb synch may be in order.

I wrote this initial post before I discovered that my upper fork bolts were loose (!) and had not ridden the bike since. Any day now she's going back on the road and well put this all to the test :03biker: :03biker: