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Author Topic: Long start  (Read 7698 times)

Offline JPaganel

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  • Posts: 184
Long start
« on: September 29, 2018, 06:23:41 PM »
So, after the first start in forever, I thought it should start normally. However, when I tried next day to move it a bit, it again cranked a long time.

I can smell gas, so I think it's running rich. I am going to look for vacuum leaks, but should I look into the temp sensor?

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  • Minnesnowta
  • 1986 K100RT, 1996 R1100RS

Offline johnny

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  • Whacking...n...Chopping Sliding...n...High Siding
Re: Long start
« Reply #1 on: September 29, 2018, 07:12:21 PM »
greetings...

id fill that tank with no corn ethyl and techron and ride it near empty and repeat... it needs miles...

butts how you gonna getts those miles with no title no registration no insurance and a good chance you are in possession of and are willfully operating a stolen vehicle...

the 1st thing that needs to be done before f-ing around with motocycles is getting ones affairs in order...

j o
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  • :johnny i parks my 96 eleven hundert rs motobrick in dodge county cheezconsin  :johnny

Offline JPaganel

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Re: Long start
« Reply #2 on: September 29, 2018, 08:41:58 PM »
Eh. I know it's not stolen, I had title in hand. I put it in a safe place, which is clearly so safe, even I can't find it.

Meanwhile, I found choke and throttle cables misrouted, in the process found throttle handle misaligned, and found fuel pressure line delaminating and leaking.

I'll fix all that and toss some of that techron in, and see what develops.
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  • Minnesnowta
  • 1986 K100RT, 1996 R1100RS

Offline JPaganel

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  • Posts: 184
Re: Long start
« Reply #3 on: September 30, 2018, 12:29:50 AM »
Well, I replaced the rotted fuel line, routed cables properly, tossed gravel out the airfilter, greased the throttle contraption (design of that thing is probably the clearest illustration of why Germany lost the war), plopped a bottle of Techron in the tank and took a trip to the gas station for some fresh gas.

On the way to the station it ran like crap.  With fresh gas, tons better.

We'll see how things are tomorrow.
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  • Minnesnowta
  • 1986 K100RT, 1996 R1100RS

Offline The Mighty Gryphon

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Re: Long start
« Reply #4 on: September 30, 2018, 07:48:27 AM »
I suspect you found the problem.  Old gas is not relished by the brick engine.  That you could smell it is probably because stale gas stinks so much.  Ilsa, my horizon chaser, bitches like a high maintenance woman when the gas is more than a couple months old. 

That ethanol laced crap they sell as fuel today does not age well, especially if it is the stuff they sell in the winter.  Even with stabilizer you can only store it for 6-12 months.  If I was a conspiracy theorist I would say that part of the reason they make us use it is to make us all want to get electric vehicles or ride bicycles.
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  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline Laitch

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Re: Long start
« Reply #5 on: September 30, 2018, 09:22:04 AM »
Quote from: JPaganel on September 30, 2018, 12:29:50 AM
(design of that thing is probably the clearest illustration of why Germany lost the war),
They're still capturing our money though.
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  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline JPaganel

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  • Posts: 184
Re: Long start
« Reply #6 on: September 30, 2018, 06:56:09 PM »
Well, this morning it seems to have started relatively easy.

Still needed a bit of warm-up to be able to get off idle. Not sure if that's normal.
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  • Minnesnowta
  • 1986 K100RT, 1996 R1100RS

Offline Laitch

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Re: Long start
« Reply #7 on: September 30, 2018, 07:10:51 PM »
Quote from: JPaganel on September 30, 2018, 06:56:09 PM
Well, this morning it seems to have started relatively easy.

Still needed a bit of warm-up to be able to get off idle. Not sure if that's normal.
This time of year, I start it on half-choke, quick shift up through to third gear, shut off the choke, then let it warm up riding in third for a couple of miles. I have a 3.5 mile downhill run before the road levels off.

Keep riding it as much as you can with clean fuel. That might be all you need to do to limber it up.
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  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline Chaos

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Re: Long start
« Reply #8 on: September 30, 2018, 07:54:24 PM »
Quote from: Laitch on September 30, 2018, 07:10:51 PM
This time of year, I start it on half-choke,

It's not really a choke Laitch, but you probably knew that,
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  • sw ohio
1987 K75S    VIN 0231
Original owner, Original litter
200,000 miles (plus or minus) and 5 paint jobs
sold 6/23
2023 Ural 2WD sidecar (BMW's bastard step child)

Offline JPaganel

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Re: Long start
« Reply #9 on: October 01, 2018, 01:56:58 AM »
Started her up in the evening - went fine with choke on.  Did a little circuit around the neighborhood, runs fine. Brakes are a little squeaky, but stop well.

Now to get her papered...
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  • Minnesnowta
  • 1986 K100RT, 1996 R1100RS

Offline JPaganel

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Re: Long start
« Reply #10 on: October 01, 2018, 11:32:03 AM »
Quote from: Laitch on October 01, 2018, 04:24:32 AM
The BMW rider's manual refers to it as a choke, the lever has Choke written on it, so why not call it a choke—instead of the increased starting speed lever?  That's a phrase reserved for intelligentsia. FI!  :giggles

Gawd... This is giving me flashbacks of arguments over Mikuni carburetors... "It's not a choke, it's an enrichment circuit"  :hehehe
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  • Minnesnowta
  • 1986 K100RT, 1996 R1100RS

Offline Laitch

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Re: Long start
« Reply #11 on: October 01, 2018, 12:04:50 PM »
Quote from: JPaganel on October 01, 2018, 11:32:03 AM
This is giving me flashbacks of arguments over Mikuni carburetors... "It's not a choke, it's an enrichment circuit"  :hehehe
You're right.  :2thumbup:
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  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline Chaos

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Re: Long start
« Reply #12 on: October 01, 2018, 12:29:30 PM »
choke, enrichment device, throttle enhancement device, use any fecking term you like, I tell you, it leads to CHAOS,  utter, total. demented chaos!   How about cold start assist lever?
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  • sw ohio
1987 K75S    VIN 0231
Original owner, Original litter
200,000 miles (plus or minus) and 5 paint jobs
sold 6/23
2023 Ural 2WD sidecar (BMW's bastard step child)
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Offline Scott

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Re: Long start
« Reply #13 on: October 01, 2018, 05:14:25 PM »
Quote from: Chaos on October 01, 2018, 12:29:30 PM
How about cold start assist lever?

I like that definition! 
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  • SoCal
  • bmw R100r, bmw k75, hondapotamus G/W, XT 500 enduro

Offline Laitch

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Re: Long start
« Reply #14 on: October 01, 2018, 05:37:17 PM »
Quote from: Chaos on October 01, 2018, 12:29:30 PM
How about cold start assist lever?
An elegant label, Chaos. When people ask where it's located, they can be told it's the one labeled Choke.
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  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline Chaos

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Re: Long start
« Reply #15 on: October 01, 2018, 06:00:45 PM »
Quote from: Laitch on October 01, 2018, 05:37:17 PM
When people ask where it's located, they can be told it's the one labeled Choke.

Mine is not labeled as anything.  Perhaps the Germans realized the error of their ways, at least with my bike.
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  • sw ohio
1987 K75S    VIN 0231
Original owner, Original litter
200,000 miles (plus or minus) and 5 paint jobs
sold 6/23
2023 Ural 2WD sidecar (BMW's bastard step child)

Offline stokester

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Re: Long start
« Reply #16 on: October 02, 2018, 06:52:08 AM »
Quote from: JPaganel on September 30, 2018, 06:56:09 PM
Still needed a bit of warm-up to be able to get off idle. Not sure if that's normal.

Have you checked the valve clearances?
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  • Yorktown Virginia
  • '94 K75S Dakar Yellow - '93 K75S Seiden Blau - '91 R100RT Bermuda Blue- '78 R100S Smoke Red

Offline szabgab

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  • Posts: 346
Re: Long start
« Reply #17 on: October 02, 2018, 06:28:13 PM »
Mine does the same, on full tank it starts right away even stone cold, on empty tank it takes it's time. Ever since replacing the fuel filter and cleaning the crap out of the plug caps and coil caps the thing runs a lot sweeter and starts easier (but still takes couple of seconds to start on an empty-ish tank)
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  • Budapest, Hungary
  • K75S 1985 model
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