Re: R90s wont idle after carburetor rebuild

["Frank ---Down Under"]

Scott/Kirk

I wonder whether the problem isn't in the actual carburettor. Assuming that the carburettors was physically removed from the engine could it possibly be that they weren't fully put back in place, resulting in not sealing properly, meaning that more air than required is seeping into the combustion chamber?

As for balancing them, I have seen others using meters and are a very good way of doing it, but in my case having owned the S since new I still prefer to do the final tuning by feel rather by ear.

Frank
Down Under

-----Original Message-----
From: R90SWORLDNET@groups.io [mailto:R90SWORLDNET@groups.io] On Behalf Of Kirk Ratzel
Sent: Thursday, 6 January 2022 12:46 AM
To: R90SWORLDNET@groups.io
Subject: Re: [R90SWORLDNET] R90s won’t idle after carburetor rebuild

Hi Scott,

When you say that you made a “minor rebuild”, what did that involve? Did you remove or replace the jets for instance. Please elaborate a little.

I take it that the slides were removed, perhaps that throttle stop screws as well for cleaning?

Wild guess without knowing more, check that the throttle stop screws are properly adjusted. Also, invest in a carb synchrometer / balancer to help take out the guesswork. Cheap and available on Amazon or eBay.

The experts will tell you they do it by ear. Well good for them, but too much trial and error for this occasional mechanic.

Best regards, Kirk

> On 5 Jan 2022, at 11:52, Kris And Scott via groups.io <svbliss2012=yahoo.com@groups.io> wrote:
>
> Hi Kirk
> Won’t idle with throttle off.
> Still no clues
>
> Thanks
> Scott
>
> Scott
>
> Beware of the man who works hard to learn something, learns it, and finds himself no wiser than before.
> -Kurt Vonnegut
>
>
>
>
>
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>

["Kirk Ratzel"]

I get it, but he is obviously not experienced.
> On 5 Jan 2022, at 23:38, heidi and steve <pappas@xtra.co.nz> wrote:
>
>  I have found my ears manage to do as good a job of balance as any the various meters I have tried.
> It may be because I am half deaf and some of the extraneous noises just aren’t heard.
> Cheers,
> Steve.
>
>>> On 6/01/2022, at 10:20, Kirk Ratzel <eur90s@hotmail.com> wrote:
>>>
>>> This is the hot set up, no fancy electronics or mods needed - just air flow:
>>> https://www.amazon.com/Carburetor-Synch ... B07P32M7NV
>>>
>>> Best regards, Kirk Ratzel
>>>
>>>> On 5 Jan 2022, at 18:39, Dennis Grossman <denny.grossman@gmail.com> wrote:
>>>>
>>> 
>>> Building from Kirk's suggestion, I would love to hear group recommendations for a good carb balancer / sychronizer tool to use on the BMWs. Also best way to alternate between cylinders without having to pull the plug wires every time.
>>> Thanks,
>>> Denny
>>>
>>>> On Wed, Jan 5, 2022 at 5:46 AM Kirk Ratzel <eur90s@hotmail.com> wrote:
>>>> Hi Scott,
>>>>
>>>> When you say that you made a “minor rebuild”, what did that involve? Did you remove or replace the jets for instance. Please elaborate a little.
>>>>
>>>> I take it that the slides were removed, perhaps that throttle stop screws as well for cleaning?
>>>>
>>>> Wild guess without knowing more, check that the throttle stop screws are properly adjusted. Also, invest in a carb synchrometer / balancer to help take out the guesswork. Cheap and available on Amazon or eBay.
>>>>
>>>> The experts will tell you they do it by ear. Well good for them, but too much trial and error for this occasional mechanic.
>>>>
>>>> Best regards, Kirk
>>>>
>>>> > On 5 Jan 2022, at 11:52, Kris And Scott via groups.io <svbliss2012=yahoo.com@groups.io> wrote:
>>>> >
>>>> > Hi Kirk
>>>> > Won’t idle with throttle off.
>>>> > Still no clues
>>>> >
>>>> > Thanks
>>>> > Scott
>>>> >
>>>> > Scott
>>>> >
>>>> > Beware of the man who works hard to learn something, learns it, and finds himself no wiser than before.
>>>> > -Kurt Vonnegut
>>>> >
>>>> >
>>>> >
>>>> >
>>>> >
>>>> >
>>>> >
>>>>
>>>>
>>>>
>>>>
>>>>
>
>

["Dennis Grossman"]

Hi Group
I realize this is a little off base to pure R90S discussion, but cannot
think of a better group to pose this question to.
My wife and I are looking to do some longer trips than we usually take with
the R90S, and I am trying to decide which BMW models would be best for
these rides. We like back roads along and live on the West Coast with
mountains and coasts.
I would love to hear the group thoughts regarding the best models that
would be comfortable for 2-up riding over longer trips and varied
landscapes.
Thanks in advance,
Denny

>

["Harold"]

Dennis, we regularly enjoy traveling on our 2009 R1200GS. It is my personal
preference to not buy another BMW motorcycle. Our 1200GS and R90s have more
miles and years in their future than we do.
Harold

On Mon, Aug 7, 2023 at 1:50 PM Dennis Grossman <denny.grossman@gmail.com>
wrote:

> Hi Group
> I realize this is a little off base to pure R90S discussion, but cannot
> think of a better group to pose this question to.
> My wife and I are looking to do some longer trips than we usually take
> with the R90S, and I am trying to decide which BMW models would be best for
> these rides. We like back roads along and live on the West Coast with
> mountains and coasts.
> I would love to hear the group thoughts regarding the best models that
> would be comfortable for 2-up riding over longer trips and varied
> landscapes.
> Thanks in advance,
> Denny
>
>>
>
>

["Frank ---Down Under"]

Denny

Looking at it from a different point and using this example. Over here, February is the hottest month of the year. I have been attending the same event since 1978 in absolutely glorious sunshine and annoying rain. The run is a round trip of 1521 miles from home. The run consists of boring straight freeways, plain secondary flat open road with high speed wide sweepers, an absolutely delightful 30 mile tight winding mountain roads and a further twisting open and tight 90 mile mountain road.

Over this period of time bikes ridden were my R90S, R65LS, K100RS and K1100RS. All the bikes were packed with tents and beer to survive 4 days out in the bush. All bikes satisfactorily did the run without any issues. However being loaded with luggage and consistently averaging 85mph the water cooled K’s were definitely less stressed in such a hot climate. The hottest run was at 118F during the day and 95F just after midnight.

You’re going on a long run facing mountains, acceleration and braking whilst carrying pillion, panniers and luggage. Any engine will have its work cut out for the run. I will not tell you which bike to bye/use, just think of mechanical sympathy.

And don’t forget the bloody postcards.

Cheers mate
Frank
Down Under
From: R90SWORLDNET@groups.io [mailto:R90SWORLDNET@groups.io] On Behalf Of Dennis Grossman
Sent: 8 August 2023 6:51 AM
To: R90SWORLDNET@groups.io
Subject: [R90SWORLDNET] Recommendations for Touring

Hi Group
I realize this is a little off base to pure R90S discussion, but cannot think of a better group to pose this question to.
My wife and I are looking to do some longer trips than we usually take with the R90S, and I am trying to decide which BMW models would be best for these rides. We like back roads along and live on the West Coast with mountains and coasts.
I would love to hear the group thoughts regarding the best models that would be comfortable for 2-up riding over longer trips and varied landscapes.
Thanks in advance,
Denny

["Steve"]

I own all three model year R90S bikes and bought a 2010 R1200GS for two up
riding because of the comfort and safety it provides.

On Mon, Aug 7, 2023, 4:50 PM Dennis Grossman <denny.grossman@gmail.com>
wrote:

> Hi Group
> I realize this is a little off base to pure R90S discussion, but cannot
> think of a better group to pose this question to.
> My wife and I are looking to do some longer trips than we usually take
> with the R90S, and I am trying to decide which BMW models would be best for
> these rides. We like back roads along and live on the West Coast with
> mountains and coasts.
> I would love to hear the group thoughts regarding the best models that
> would be comfortable for 2-up riding over longer trips and varied
> landscapes.
> Thanks in advance,
> Denny
>
>>
>

["James Marciano"]

I have the '75 R90S, '85 K100 (owned since 1987), and 2007 1200 GSA.... I'd
take the GSA for comfort, safety and packing options.

On Tue, Aug 8, 2023 at 8:35 AM Steve <stowne482@gmail.com> wrote:

> I own all three model year R90S bikes and bought a 2010 R1200GS for two up
> riding because of the comfort and safety it provides.
>
> On Mon, Aug 7, 2023, 4:50 PM Dennis Grossman <denny.grossman@gmail.com>
> wrote:
>
>> Hi Group
>> I realize this is a little off base to pure R90S discussion, but cannot
>> think of a better group to pose this question to.
>> My wife and I are looking to do some longer trips than we usually take
>> with the R90S, and I am trying to decide which BMW models would be best for
>> these rides. We like back roads along and live on the West Coast with
>> mountains and coasts.
>> I would love to hear the group thoughts regarding the best models that
>> would be comfortable for 2-up riding over longer trips and varied
>> landscapes.
>> Thanks in advance,
>> Denny
>>
>>>
>
>

--
For information about our Airbnb <https://www.airbnb.com/rooms/30120821>
and things to do in and around Sergeantsville, NJ
<https://travelade.com/sergeantsville/>.

["AC53"]

On Mon, Aug 7, 2023 at 05:50 PM, Dennis Grossman wrote:

>
> ... trying to decide which BMW models would be best for these rides. We
> like back roads along and live on the West Coast with mountains and
> coasts.
> ... comfortable for 2-up riding over longer trips and varied landscapes.
>
>
>> Dennis, if you are doing paved roads then, in my opinion from riding the
>> GS, RS, and RT models, the only reason to run a GS is if you are 6' or
>> taller and don't want to adjust an RS or RT with aftermarket pegs and
>> bars. Otherwise, the RS provides better weather protection than the GS and
>> the RT is far superior to both. That is both in cold and hot weather. I've
>> ridden a GS for a few thousand miles in mountains with sub-50F mornings
>> and 104F+ afternoons. I really wished I'd used my RT for that trip.
>
>
>

>
>
>>
>>
>> Any of the water-cooled RS/RT models will be the most mainenance-free and
>> capable rides you could pick. Less issues and less work than pre-2013 GS
>> or 2014 RS/RT. I've owned a 2014 R1200RT and a 2019 R1250RT. Either would
>> be perfect for my sub-6' frame in the situations you describe. There are
>> plenty of older ones available, but the price savings, increased
>> maintenance schedules, etc., don't warrant looking older in my opinion
>> unless you want to stay with an Airhead. If that were the case, I'd be
>> inclined to look at the last generation R100RS or RT. I've got a 1983
>> R100RS and a 1986 R80RT, both are great bikes but for two-up riding with
>> luggage, my lazy self would take my 2019 R1250RT (or my 2014 R1200RT if I
>> still had it) and relax and "smell the roses". In 2019 when I bought the
>> R1250RT I put over 6,000 miles on it in approximately 5-weeks of riding,
>> mostly through the Appalachian Mountains from Nova Scotia down to
>> Birmingham, AL and back. It was always a joy to get on and ride in all
>> kinds of weather. Gave great fuel economy when ridden frugally or even
>> reasonably, and it hustled like an RS when trying to outruns a hurricane
>> that I spent three days avoiding. Don't be put off by the weight
>> difference between the GS, RS, and RT. When each is outfitted for doing
>> two-up touring, and carrying the same fuel load , there isn't a huge
>> difference in their total weight, and most of that is improved weather
>> protection. Having said all that, the best bike is the one you're most
>> comfortable with. I've done a 5,000 mile road trip on a '73 Norton 850
>> Commando, a couple thousand on a Suzuki GS750, several thousand on a H-D
>> StreetGlide, etc., and been fine with them all. However, if I were doing a
>> 1,000 mile two-up run tomorrow and had to buy a bike today for it, then
>> I'd be looking for a 2014+ RT. YMMV
>>
>>
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