Super Jet Superjet fuel problems
- Thread starter Thomasbv
- Start date
You should go through your fuel system.
I am assuming you have a RN Superjet with dual 38 carbs.
Make sure that your pulse lines are hooked up right to the rear carb (middle fitting)
Make sure that the fuel lines are hooked up correctly to the carburetors. Bottom fitting is for fuel in, top fitting is for return.
If all that is okay, you should consider taking the carbs off the motor and go through them piece by piece. Pay close attention to the fuel filters inside the carbs (under pump cover). If they are excessively dirty, you can have the exact problem you are describing.
This may be a good time for a carburetor rebuild.
I am assuming you have a RN Superjet with dual 38 carbs.
Make sure that your pulse lines are hooked up right to the rear carb (middle fitting)
Make sure that the fuel lines are hooked up correctly to the carburetors. Bottom fitting is for fuel in, top fitting is for return.
If all that is okay, you should consider taking the carbs off the motor and go through them piece by piece. Pay close attention to the fuel filters inside the carbs (under pump cover). If they are excessively dirty, you can have the exact problem you are describing.
This may be a good time for a carburetor rebuild.
sounds like you need to re-jet the carb.
it is probably lean (high air to fuel ration) which is why the primer helps
for more info: http://www.x-h2o.com/threads/19403-Carburetor-(specs)-Database-SuperJet-and-Blaster-1
it is probably lean (high air to fuel ration) which is why the primer helps
for more info: http://www.x-h2o.com/threads/19403-Carburetor-(specs)-Database-SuperJet-and-Blaster-1
BROSS has written this :
Brand = mikuni
Model = oem
Size = 38
Quantity = dual
Main Jet = 135
Pilot Jet = 65
Needle/Seat = 2.0
Spring = 65g/22-25psi popoff
F A type = stock
- - - - -
Gas Octane = 93
Altitude = sea level
Main type of riding = flatwater/boat wake
Would it pass the 10 second WOT test = yes....pipe is set up for bottom end.
Powerband = low to mid
Motor type/setup = Ported 701 61x/62t, b-pipe, MSD enhancer, head-185psi, 6m6/61x electrics, 13/17 solas concord, WW cone, bored nozzle.
Soon to be 771 flat top
:
and its almost same setup as i am running, so i think the jetting is okay?
Brand = mikuni
Model = oem
Size = 38
Quantity = dual
Main Jet = 135
Pilot Jet = 65
Needle/Seat = 2.0
Spring = 65g/22-25psi popoff
F A type = stock
- - - - -
Gas Octane = 93
Altitude = sea level
Main type of riding = flatwater/boat wake
Would it pass the 10 second WOT test = yes....pipe is set up for bottom end.
Powerband = low to mid
Motor type/setup = Ported 701 61x/62t, b-pipe, MSD enhancer, head-185psi, 6m6/61x electrics, 13/17 solas concord, WW cone, bored nozzle.
Soon to be 771 flat top
:
and its almost same setup as i am running, so i think the jetting is okay?
- Location
- Granbury, TX
In addition to the checks everybody has mentioned, make sure and verify your check-valve between the tank and vapor separator is working properly. It should let pressure in to the tank, but not let pressure out of the tank.
Okay, anybody there can explain me how it looks? or better show me on a picture..
- Location
- Granbury, TX
The reason you get the hiss when you open the tank is because the tank is pressurized. Thomasbv, your check valve sounds like it is working properly. It should let air into the tank but not let pressure out. So, if the gas in the tank heats up slightly, pressure builds in the tank and is not allowed to escape since the valve won't let it.
- Location
- menifee ca
im rebuilding my carbs on my 2001 super with dual like yours and the kit i got has a few extra gaskets do you remember if you had extra gaskets
there are always extras