Carb(s)
Zyp
I have a 1987 GL1200 Aspencade that has four carbs in dire need of cleaning.
What's the best cleaner to use? If I remove and soak?
--
Zyp
Who Me?
"Zyp" <nos...@yahoo.com> wrote
> I have a 1987 GL1200 Aspencade that has four carbs in dire need of
> cleaning. What's the best cleaner to use? If I remove and soak?
>
If it is still running at all, first try twice the recommended rate of
cleaner in 1/2 tank of gas and run it for a while. Gumout Original Carb.
and Choke cleaner is good; so is Berryman's B12. If that helps, then fill
the tank, ride and pray. Finishing that tank and maybe another with the
cleaner may just do the trick.
Both those products are good for remove and soak too.......if it comes to
that.
.
> I have a 1987 GL1200 Aspencade that has four carbs in dire need of cleaning.
> What's the best cleaner to use? �If I remove and soak?
I don't recommend actually *soaking* even the filthiest, most gummed
up carbs, as you might destroy old rubber parts that have yet
perished.
Use aerosol Berryman B-12, STP, or GumOut carb cleaner and spray the
carbs with it. Those carb cleaners contain acetone, toluene, and
methyl alcohols and they are fast acting.
If you have some kind of flat metal pan that will hold the carbs, you
can use a brush to scrub the carbs with the cleaner that runs off them
as you spray them.
That's as close as I ever get to actually immersing a motorycle carb
in cleaner.
If you want to clean the carbs internally as you ride, pour 4 or 5
ounces of B12 into a fuel tank of fresh gas. Don't get any on your
paint.
You'll know the B12 is doing its job if the idle RPM increases while
you're riding slowly to keep the engine running off the idle jets.
You should know where the idle adjustment is before riding with carb
cleaner in the gasoline.
zoot
could that be from a stuck float?
zoot
> i have fuel dumping from a tube on the air cleaner on my 82 seca 750.
> could that be from a stuck float?
also seca tanks don't have an off. just on, res, and pri. the only way
i could stop the flow was by pinching the tube
.
> On Sep 21, 3:52 pm, zoot <aba...@ns-design.com> wrote:
>
> > i have fuel dumping from a tube on the air cleaner on my 82 seca 750.
> > could that be from a stuck float?
Remove the oil filler cap and smell the oil. Does it smell like
gasoline?
You may have a stuck float which causes the oil level in the crankcase
to rise.
When the crankshaft gets into the diluted oil it whips it up and the
excess pressure in the crankcase will blow out the breather into the
air cleaner.
The paper air filter is ruined when it is oiled.
If your oil is getting diluted with gasoline, you'll have to use
Berryman B12 or GumOut or STP carb cleaner to clean out the float
valves.
Sometimes you can clean the float valves by spraying the carb cleaner
down the fuel hose and leave it in the carbs for half an hour.
Afterwards, you can start the engine on the carb cleaner that's in the
float bowls. It will stink and the fumes will make your eyes sting,
but it will definitely run.
Also, the carb cleaner going through the idle jets will help clean
them out...
>
> also seca tanks don't have an off. just on, res, and pri. the only way
> i could stop the flow was by pinching the tube
http://webservices.motorsportdealers.com/parts/partImages/YAM/2/02/0748/0042.Gif
13 SKU: 3H3-24523-00-00 VALVE
Drain your gas tank so you can remove the two screws on the fuel cock
to inspect the four holed rubber grommet that selects whether you're
getting reserve or normal fuel flow.
If the grommet is torn between two holes, you can sometimes just pop
the grommet out and rotate it so the fuel cock doesn't leak between
the PRI and the regular function.
But, if the grommet is torn, I recommend that you look for a fuel cock
rebuild kit at www.oldbikebarn.com
Mark Olson
Assuming the petcock wasn't on PRIme, you have two problems, a stuck
float or dirty float valve, and a leaky petcock. Neither are
particularly difficult to fix, but it's a good bet all your carbs
are gummed up and need removal, disassembly, and cleaning, which is
time consuming and fiddly if you've never done it before.
"Prime" lets fuel flow without any vacuum applied to the petcock, "on"
and "res" need vacuum to enable fuel flow. Prime is there to fill
the carbs after the bike's been standing for a very long time (the
fuel in the bowls will evaporate) or if the carbs have been drained
for storage. On is the normal position you should be using, and res
selects the lower standpipe on the petcock which allows you to use
the last bit of fuel.
The Older Gentleman
> also seca tanks don't have an off. just on, res, and pri.
The 'off' is auto, you silly sod. That's a vacuum tap and only passes
fuel when the engine's running, unless the tap's completely buggered.
--
BMW K1100LT Ducati 750SS Yamaha XT600E Honda CB400F & SH50
GAGARPHOF#30 GHPOTHUF#1 BOTAFOT#60
The bells, the bells.....
zoot
so if the tap works i can pop the tube off the tap and fuel should not
come out? not so with either tank. i have 2 secas.
Mark Olson
> On Sep 22, 3:29 am, totallydeadmail...@yahoo.co.uk (The Older
> Gentleman) wrote:
>
>>zoot <aba...@ns-design.com> wrote:
>>
>>>also seca tanks don't have an off. just on, res, and pri.
>>
>>The 'off' is auto, you silly sod. That's a vacuum tap and only passes
>>fuel when the engine's running, unless the tap's completely buggered.
Or you've left the selector on Prime.
> so if the tap works i can pop the tube off the tap and fuel should not
> come out? not so with either tank. i have 2 secas.
Did you read the lengthy explanation I posted? Already answered.
zoot
> zoot wrote:
> > so if the tap works i can pop the tube off the tap and fuel should not
> > come out? not so with either tank. i have 2 secas.
>
> Did you read the lengthy explanation I posted? Already answered.
yep
just saying
2 tanks
2 bad taps
fixing it every time i ride is getting old fast
Mark Olson
Some vacuum petcocks are prone to failure when the rubber bits inside
get old. You've got two like that, buy the rebuild kits from
Yamaha and fix them right, once and for all. Just make sure when
you take the petcock apart that the valve seat isn't corroded or
replacing the diaphragm assembly without addressing that issue
won't fix the leak problem.
zoot
b 12 did wonders now waiting for petcock parts. oil doesn't smell like
gas. might get away with this one.