1983 GS1100E question

[crag antler]

While pulling the GS out of winter storage, I have noticed while she is warming up, that the intake boots are, almost like breathing,like flexing...
It seems like I can see every bit of the idle in the boots.
Is this normal, am I seeing too much?????
I don't see any cracks or weakening in the boots.
Any ideas or is this normal

[earlfor]

Re: 1983 GS1100E question

There is only one thing that can cause those boots to contract. Your engine need more air than it is getting. The only way that can happen is if air cant get through your air filter. Soooooooooooooooooo......................
your airfilter is dirty.

Earl :-)

While pulling the GS out of winter storage, I have noticed while she is warming up, that the intake boots are, almost like breathing,like flexing...
It seems like I can see every bit of the idle in the boots.
Is this normal, am I seeing too much?????
I don't see any cracks or weakening in the boots.
Any ideas or is this normal

[pano]

Interesting...I think I noticed something similar with mine...and I know my filters are dirty.

[lecroy]

All my old GS's have done this at idle. It's a lot of vacuum on the intake stroke.

[duaneage]

If the choke is on, of course you will suck on the boots a bit. THe choke restricts the airflow. At higher engine speeds the boots won't pulse.

[Anonymous]

These carbs don't actually have a choke, they have an enrichener that is mistakenly called a choke. It works by adding fuel, not restricting air flow. The 1100 eng, every rpm, is trying to suck 550 cc of air & fuel thru the tiny openings, under the slides, in the carbs, as the slides are barely open at idle. This pulsating of the intake boots is normal, but don't ask me why you don't see it all the time.

[KGB]

Not bats in the belfry.......maybe mice in the air box?


Notorious for building nests in the air box.

[Anonymous]

The carbs jiggle around on my 81 1100E too. My friend has an outdoor kept 83 and all of the rubber, including the boots, is as hard as a rock. That's not the case on my brothers 82 400E as it has the bolt on boots which are a lot tougher.

Steve