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Starting old CBR
Starting old CBR
'87 CBR600, 20k "easy" mi. CV Keihins.
I had to pull carbs, clean pilot jets, etc about 6 weeks ago.
Seemed to be running about as good as ever.
Added something from an old can of Stabil to gas yesterday. Rode
about 12 mi., spent 20 min. in a store, came out, it wouldn't
start. Tried 0 throttle, 1/8 throttle, 1/2 throttle, even (very
briefly) with 1/3 choke. Stood around thinking about it for 6-8
min., tried full throttle and it shot up to 5k rpm in a flash.
Operating conditions were normal. About 68 F. Nothing out of the
ordinary about the ride.
Same thing used to happen -very- infrequently in previous years: I'm
guessing once every 2 seasons.
"El Motore'" was flooded? Any notion as to what might've caused it?
TIA,
Puddin'
"Well, there's two trains runnin'.
Ain't neither one goin' my way.
One run at midnight,
the other run just before day."
- from "Still A Fool", Muddy Waters, maybe 1949
'87 CBR600, 20k "easy" mi. CV Keihins.
I had to pull carbs, clean pilot jets, etc about 6 weeks ago.
Seemed to be running about as good as ever.
Added something from an old can of Stabil to gas yesterday. Rode
about 12 mi., spent 20 min. in a store, came out, it wouldn't
start. Tried 0 throttle, 1/8 throttle, 1/2 throttle, even (very
briefly) with 1/3 choke. Stood around thinking about it for 6-8
min., tried full throttle and it shot up to 5k rpm in a flash.
Operating conditions were normal. About 68 F. Nothing out of the
ordinary about the ride.
Same thing used to happen -very- infrequently in previous years: I'm
guessing once every 2 seasons.
"El Motore'" was flooded? Any notion as to what might've caused it?
TIA,
Puddin'
"Well, there's two trains runnin'.
Ain't neither one goin' my way.
One run at midnight,
the other run just before day."
- from "Still A Fool", Muddy Waters, maybe 1949
Re: Starting old CBR
Puddin' Man wrote:
>"El Motore'" was flooded? Any notion as to what might've caused it?
Float shutoff valves stuck open because some crud moved down from the gas
tank to the carbs.
Level of gasoline in float bowls rose too high.
Engine vacuum could easily pick up the excess fuel.
The engine started and idled way too fast.
The fuel level adjusted itself when the float valves started working normally.
The engine idled normally as you rode home.
Alternatively, your throttle pull cable doesn't have enough slack in it.
--
Message posted via MotorcycleKB . com
* w w w .motorcyclekb . com /Uwe/Forums.aspx/tech/200711/1
Puddin' Man wrote:
>"El Motore'" was flooded? Any notion as to what might've caused it?
Float shutoff valves stuck open because some crud moved down from the gas
tank to the carbs.
Level of gasoline in float bowls rose too high.
Engine vacuum could easily pick up the excess fuel.
The engine started and idled way too fast.
The fuel level adjusted itself when the float valves started working normally.
The engine idled normally as you rode home.
Alternatively, your throttle pull cable doesn't have enough slack in it.
--
Message posted via MotorcycleKB . com
* w w w .motorcyclekb . com /Uwe/Forums.aspx/tech/200711/1
Re: Starting old CBR
On Thu, 01 Nov 2007 17:51:22 GMT, "Albrecht via MotorcycleKB . com " <u33665@uwe> wrote:
>Puddin' Man wrote:
>
>>"El Motore'" was flooded? Any notion as to what might've caused it?
>
>Float shutoff valves stuck open because some crud moved down from the gas
>tank to the carbs.
>
>Level of gasoline in float bowls rose too high.
>
>Engine vacuum could easily pick up the excess fuel.
>
>The engine started and idled way too fast.
>
>The fuel level adjusted itself when the float valves started working normally.
>
>
>The engine idled normally as you rode home.
>
>Alternatively, your throttle pull cable doesn't have enough slack in it.
I rode about 8 mi. today, parked it for 20 min., came back, it
turned a couple-3 crank revs and started fine with no throttle.
The problem is infrequent and not something obvious.
P
"Well, there's two trains runnin'.
Ain't neither one goin' my way.
One run at midnight,
the other run just before day."
- from "Still A Fool", Muddy Waters, maybe 1949
On Thu, 01 Nov 2007 17:51:22 GMT, "Albrecht via MotorcycleKB . com " <u33665@uwe> wrote:
>Puddin' Man wrote:
>
>>"El Motore'" was flooded? Any notion as to what might've caused it?
>
>Float shutoff valves stuck open because some crud moved down from the gas
>tank to the carbs.
>
>Level of gasoline in float bowls rose too high.
>
>Engine vacuum could easily pick up the excess fuel.
>
>The engine started and idled way too fast.
>
>The fuel level adjusted itself when the float valves started working normally.
>
>
>The engine idled normally as you rode home.
>
>Alternatively, your throttle pull cable doesn't have enough slack in it.
I rode about 8 mi. today, parked it for 20 min., came back, it
turned a couple-3 crank revs and started fine with no throttle.
The problem is infrequent and not something obvious.
P
"Well, there's two trains runnin'.
Ain't neither one goin' my way.
One run at midnight,
the other run just before day."
- from "Still A Fool", Muddy Waters, maybe 1949
