K9 Pointy with high hot idle.

[Nutsinatin]

Hi all,
I've got a bit of an issue with my K9 pointy. On Monday afternoon once up to temperature (90*C) the bike started to idle at ~2000 rpm, normally it idles at about 1300 rpm. I found that it I pushed the throttle shut it dropped back down to normal. Yesterday I had no issues but only rode 7 miles in the heat of the day, I went for a 70 mile ride in the evening when it was cooler with no issues. Again this morning it was fine, however once up to temperature on the way home the bike would idle at ~3000 rpm and if I pushed the throttle shut it would only drop to ~2000 rpm.

The throttle mechanism is smooth and is under tension across its whole range as well as having no issues in cooler weather so I can't see this being my issue. I'm running a stock air filter (replaced 7000 miles ago) with a stock exhaust and map. Valves and TBs were checked/adjusted 7000 miles ago and oil & filter were changed 3500 miles ago. Coolant was replaced about 7000 miles (1 year) ago. Currently when the bike is up to temperature it is running at a minimum of 90*C and maxing out at 105*C when the fan kicks in. The bike is a little down on power especially at the top end compared to my last SV but has no other symptoms. Fuel consumption hasn't changed and is averaging about 58 MPG, and this issue is only in high ambient temperatures, not when only the bike is hot.

So any suggestions or do I just live with it in the heat as normally it's fine? My personal feeling is TBs out of sync which is beyond me as I don't have the electronic kit to lock the idle to make the adjustment, but if you have any suggestions that I could try first it would be appreciated. Thanks!

[Nutsinatin]

Oh and to add the cold idle is just fine, fires up then rises to ~1800 rpm before dropping down to ~1300 rpm. No rough running or stalling at all.

[Bibio]

as the heat rises metal expands more so it might just be a case of you need to give a little more slack to the open throttle cable even just 1mm might do the trick.

apart from that the only thing i can think of is the ambient air temp sensor going a bit mental with the heat.

how sensitive have you set the TPS?

might be worth trying over on svrider as they ride in higher temps then we do so might have had the same problems.

[Bibio]

i should read things fully. your bike should not be sitting at 90c it should be around 73-76c unless you are doing a lot of town riding in which case 90c should be the very top of the range and rising at lights.

my bike sits around 73-76c on open roads and in town around 83c then stuck at traffic lights will rise to around 90c. the only time my fan kicks in is when i'm testing the bike to make sure that its still working which is around 105c

[Nutsinatin]

I'll try adjusting the cable and see if that makes a difference then, it's free and I've got nothing to lose.

Any testing I can do on the ambient temp sensor (presume this is the airbox temp sensor)?

TPS is set to whatever the last owner left it at, they didn't do any of their own bike work so it is whatever their garage set it to. I haven't touched it as it's just right - is this worth adjusting to see what happens?

This bike is definitely hotter than the last one, the last one ran at about 78*C and only occasionally hit 105*C in the heat of summer in town/traffic. The heat wash off this one is pretty grim in this weather which is something I only experienced rarely on the last bike. I presumed these higher temps were just because it was a different bike.

With the temperature what should I be looking at, I'm presuming it is pumping as it's not overheating and the fan definitely works so I'm guessing the thermostat works too from this? It is 90*C riding in the open, anywhere you would be looking to test if it's constantly this high? Possibly related I have a very slight weep (takes about a week to become noticeable) from the oil cooler. I was going to try and find the source next week when I change the oil, looks like the LH banjo - but would this really make this much difference to temp?

Thanks for all your advice.

[Bibio]

i would start by setting the TPS then have a look at the cooling system. the SV usually cant get a air block as the thermostat has a by-pass hole but this by-pass hole can get blocked if the person refilling the system is not careful or used hard tap water.

as for the oil weep out the oil rad it should not affect the cooling property's of the bike unless the bike runs out of oil.

personally i think the hot temps are due to the coolant and if it were me i would change it or inspect the system.

[Nutsinatin]

Ta Lance, I'll set the TPS, empty the coolant, give the system a check over then replace with new coolant, thanks once again.