On 8 Jan 2022, at 20:06, Kirk Ratzel <eur90s@...> wrote:

? I get it, but he is obviously not experienced.

On 5 Jan 2022, at 23:38, heidi and steve <pappas@...> 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@...> wrote:

This is the hot set up, no fancy electronics or mods needed - just air flow:?

?

Best regards, Kirk Ratzel

On 5 Jan 2022, at 18:39, Dennis Grossman <denny.grossman@...> 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@...> 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 <svbliss2012=[email protected]> 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
>
>
>
>
>
>
>

On 5 Jan 2022, at 23:38, heidi and steve <pappas@...> 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@...> wrote:

This is the hot set up, no fancy electronics or mods needed - just air flow:?

?

Best regards, Kirk Ratzel

On 5 Jan 2022, at 18:39, Dennis Grossman <denny.grossman@...> 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@...> 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 <svbliss2012=[email protected]> 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
>
>
>
>
>
>
>

On Jan 6, 2022, at 11:21 AM, Kirk Ratzel <eur90s@...> wrote:

?
??Random comments:
- Check that the “choke” (enrichers) have enough slack not to be partly held open
- after years sitting with ethanol in the tank, the rubber bit on the float needle jet will become hard or damaged so won’t seat properly (but unless gas is gushing out of the float bowl, this is not your problem)
- if you pull off the black rubber air box boots, then you can visually adjust the slide - also you can slip on you synchrometer to get the balance adjustment just right. Take out the guess work.
- which position is the c-clip in the needle jet?

Kirk

On 6 Jan 2022, at 12:10, Kris And Scott via groups.io <svbliss2012@...> wrote:
?Sorry for the lack of details.

Bike sat for 1.5 year
Stored with Ethanol gas and Stabil
Bike ran prior to storage
Bike would not idle when brought out of storage. Assumed bad fuel which was removed.
Removed carbs and rebuilt them using BevelHeaven rebuild instructions. This included stripping carbs, cleaning and rebuilding with new gaskets and orings.
No jets or needles were replaced.
Floats tested and float level checked
New choke plunger and springs installed.
New choke cables installed
Carbs idle air regulating screw set to 1.5 turns out.
Carbs installed
Adjusted slide screw to just touching the slide using the sound method.
Bike starts and revs smoothly, but will not idle.
Checked for air leaks using carb cleaner. None found
Adjusting idle air screw or slide screw seems to have no affect on idle speed.
Removed carbs and recleaned using Bevel Heaven guide. Verified idle jet was not clogged.
Replaced carbs. Still no idle.
Checked points gap was correct
Checked that valve lash was correct.
Still no idle with throttle closed.

As I’m writing this I wonder if the choke assembly is somehow causing the issue?

Thanks

Scott

Beware of the man who works hard to learn something, learns it, and finds himself no wiser than before.
-Kurt Vonnegut

On 6 Jan 2022, at 12:10, Kris And Scott via groups.io <svbliss2012@...> wrote:
?Sorry for the lack of details.

Bike sat for 1.5 year
Stored with Ethanol gas and Stabil
Bike ran prior to storage
Bike would not idle when brought out of storage. Assumed bad fuel which was removed.
Removed carbs and rebuilt them using BevelHeaven rebuild instructions. This included stripping carbs, cleaning and rebuilding with new gaskets and orings.
No jets or needles were replaced.
Floats tested and float level checked
New choke plunger and springs installed.
New choke cables installed
Carbs idle air regulating screw set to 1.5 turns out.
Carbs installed
Adjusted slide screw to just touching the slide using the sound method.
Bike starts and revs smoothly, but will not idle.
Checked for air leaks using carb cleaner. None found
Adjusting idle air screw or slide screw seems to have no affect on idle speed.
Removed carbs and recleaned using Bevel Heaven guide. Verified idle jet was not clogged.
Replaced carbs. Still no idle.
Checked points gap was correct
Checked that valve lash was correct.
Still no idle with throttle closed.

As I’m writing this I wonder if the choke assembly is somehow causing the issue?

Thanks

Scott

Beware of the man who works hard to learn something, learns it, and finds himself no wiser than before.
-Kurt Vonnegut

On 5 Jan 2022, at 11:52, Kris And Scott via groups.io <svbliss2012@...> 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

On Jan 5, 2022, at 10:31 AM, DENNIS O'DELL <denniscodell@...> wrote:

?Hi Scott,

I’m not sure what a minor rebuild of a Dell’Orto might consist of, but perhaps it falls short of what is actually needed.

Following Kirk’s line of questions, did your R90S idle before the minor rebuild? What prompted you to do the minor rebuild in the first place? Without more information it would be hard to troubleshoot the problem.

I’d suggest that you do a proper full rebuild (and hope that your wire probing didn’t damage anything).

Here’s a link to Snowbum’s Dell’Orto rebuild info that will take you through the job.

As a side note, way back in a previous lifetime, I used to do form of minor carb rebuilds on a ‘52 Chevy pickup I owned. It consisted of starting the engine and holding the throttle open to get the RPMs up pretty high and then spraying some long forgotten brand of aerosol carb cleaner all over the carb and into the venturi. Didn’t really do anything, but it was quick and dirty and gave me a feeling of accomplishment… for ten seconds, but hey, I was 23 years old.

Mit freundlichen Grü?en/With best regards,

Dennis C. O'Dell

denniscodell@...

Mobile: +49 (175) 855 6663

Home: +49 911 277 45370

Skype: diggertfu

Hochstrasse 19

Nürnberg 90429

Germany

?

"Laughter and Tears are both responses to frustration and exhaustion. I myself prefer to Laugh since there is less to do afterwards."

- Kurt Vonnegut

On Jan 2, 2022, at 10:10 PM, Kris And Scott via groups.io <svbliss2012@...> wrote:

?

Hi group Happy New Year!

After a minor rebuild of my Dellortos, I am unable to get any kind of idle. I’ve removed the carbs and using a thin wire ensured the idle circuit was clean and open. I’ve also used carb spray to soak carb passages. Still no idle. I’ve checked points gap and valve clearance. All seems within spec. I’d appreciate any suggestions on what I’ve missed or anything else I can try.?

Thanks for any input.?

Scott
1976 R90s

On 6/01/2022, at 10:20, Kirk Ratzel <eur90s@...> wrote:

This is the hot set up, no fancy electronics or mods needed - just air flow:?

?

Best regards, Kirk Ratzel

On 5 Jan 2022, at 18:39, Dennis Grossman <denny.grossman@...> 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@...> 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 <svbliss2012=[email protected]> 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
>
>
>
>
>
>
>

On 5 Jan 2022, at 18:39, Dennis Grossman <denny.grossman@...> 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@...> 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 <svbliss2012=[email protected]> 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
>
>
>
>
>
>
>

On Jan 5, 2022, at 2:26 PM, Nick Ploeg <nickploeg@...> wrote:

Best I've used:

Kind regards?

Nick Ploeg?

sunny NZ

-------- Original message --------

From: Dennis Grossman <denny.grossman@...>

Date: 6/01/22 6:39 am (GMT+12:00)

To: [email protected]

Subject: Re: [R90SWORLDNET] R90s won’t idle after carburetor rebuild

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@...> 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 <svbliss2012=[email protected]> 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
>
>
>
>
>
>
>

Arguably the simplest, and by far the cheapest, is two insulated screwdrivers and two adapters that allow the spark plug caps to be connected to the spark plugs SECURELY, yet allow the spark plugs to be shorted to ground (via the screwdrivers, alternatively).? The indicating instrument will be your ears, and the tachometer.

?

Snowbum (AKA Robert Fleischer)




Learn from the mistakes of others, because you cannot
live long enough to make them all yourself!
A large number of good tests, inspections, measurements and both good
and bad experiences, are more valuable than many opinions, particularly
if found in a Facebook Group.
ABC 1843; MOA Life 17058; AMA Charter Life 73254; etc.
Carson City, Nevada

?(???)?
?

?

?

?

From: [email protected] <[email protected]> On Behalf Of Dennis Grossman
Sent: Wednesday, January 05, 2022 9:39 AM
To: [email protected]
Subject: Re: [R90SWORLDNET] R90s won’t idle after carburetor rebuild

?

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
<snippo>

--

Robert (Snowbum) Fleischer, Carson City, NV, USA






ABC 1843; MOA Life 17058; AMA Charter Life 73254; USCA 6504…..
?(???)?

From: [email protected] <[email protected]> On Behalf Of Dennis Grossman
Sent: Wednesday, January 05, 2022 9:39 AM
To: [email protected]
Subject: Re: [R90SWORLDNET] R90s won’t idle after carburetor rebuild

?

Robert (Snowbum) Fleischer, Carson City, NV, USA






ABC 1843; MOA Life 17058; AMA Charter Life 73254; USCA 6504…..
?(???)?