GS1100G new owner Love/hate from day one!

[chickenstrip]

[

The reason to not run high octane if you don't need to is it's possible to go the other direction and get incomplete fuel burn on a regular compression engine.[/QUOTE]



The pinging occurs more in hot temps after the bike has been running for a while.It has an oil cooler that is set up very badly and I am going to remove it or relocate it as it may be contributing to the heat rather than reducing it.It has really long lines that run under the engine from the pressure sensor by the cam chain tensioner all the way to just under the horns at the front and the low pressure oil system might struggle to cope pumping it all that way?

[850 Combat]

It should be happy on any grade of fuel. I believe it was designed for 87. If it pings I would look at lean carbs or advanced timing. Or ride it for a couple tanks and see if it clears up.

I never put anything above regular in mine.

[gs scott]

84 gs

Thanks for the welcome everyone.
Looking forward to not spending to much more time servicing the GS and a lot more time riding.It has had every possible serviceable item serviced as sitting for many years really did it no favours.
The only other problem left to solve is it pings on standard fuel (91) if I load the motor up at low revs ? no problem on 98 octane.
Has anyone else experienced this problem?

Welcome to the fold. Beautiful GS - love that paint scheme - it was never offered here in the US!

All my GS history is with the 16 valvers, but I've read more than once, that thanks to the US EPA clamping down in the late 70s / early 80s, Suzuki and everyone else prepared to meet the new, more stringent pollution standards. Part of that was leaning out the burn process, along with a switch to CV carbs (among many other efforts.) And as a result, these air cooled engines became more sensitive to fuel quality / octane. Several bike magazine reviews - back when the bikes were brand new - documented the pinging at low rpms, but they also eliminated the pinging with higher octane fuel.

So, the earlier advice to run 98 was dead on.

Glad to hear how much you like and appreciate your GS - they're really great bikes to ride!

[chickenstrip]

Welcome to the fold. Beautiful GS - love that paint scheme - it was never offered here in the US!

All my GS history is with the 16 valvers, but I've read more than once, that thanks to the US EPA clamping down in the late 70s / early 80s, Suzuki and everyone else prepared to meet the new, more stringent pollution standards. Part of that was leaning out the burn process, along with a switch to CV carbs (among many other efforts.) And as a result, these air cooled engines became more sensitive to fuel quality / octane. Several bike magazine reviews - back when the bikes were brand new - documented the pinging at low rpms, but they also eliminated the pinging with higher octane fuel.

So, the earlier advice to run 98 was dead on.

Glad to hear how much you like and appreciate your GS - they're really great bikes to ride!

Thanks Scott thats great to hear.
I replaced the air filter as the original just crumbled in my hand it was so old and clogged up.Before that the plugs were showing it as running rich and had no signs of pinging since the new filter the plug readings look close to perfect maybe a little on the lean side which makes perfect sense after reading the above.I may have under oiled the filter as well so I will redo that and check the seal on top of the filter that looked a little past its best.
Have just returned from a short ride and can't wait to really hit the road on the weekend.
I love my 16 valve but I love shaft drive more on a big trip.

[simon kuether]

G'day there Chicken old mate.I run either 95 or 98 in my GS1000S with a wee drop of Moories fuel conditioner in each tank ( the lead replacement stuff ). About 1/2 ml per litre of petrol . I also run ( I know I'm going to get belted here ) a 50 weight oil . My ambient temp is probably a bit higher than yours though . The old girl loves both . Welcome to THE home of the mighty GS's . Lot of clever buggers on here , as you've already twigged I guess . Cheers , Simon.

[chickenstrip]

G'day there Chicken old mate.I run either 95 or 98 in my GS1000S with a wee drop of Moories fuel conditioner in each tank ( the lead replacement stuff ). About 1/2 ml per litre of petrol . I also run ( I know I'm going to get belted here ) a 50 weight oil . My ambient temp is probably a bit higher than yours though . The old girl loves both . Welcome to THE home of the mighty GS's . Lot of clever buggers on here , as you've already twigged I guess . Cheers , Simon.

thanks simon Moories it is! would be very handy when in the middle of nowhere and only regular is available.