1988 elite runs too rich and cannot adjust
Moderator: Moderator
1988 elite runs too rich and cannot adjust
My 1988 elite will only run a short time without having to clean the plug that is slightly oily but not visibly wet. I have tried starting the air screw adjustment at the 1 3/4 position and gone out from there. When I get out far enough I see dark fuel bubbling from air screw. I have recently replaced carb with one I got on ebay, but suspect it's not OEM. I have checked air cleaner and air path. I suspect some air port retriction, so wondering if OEM carb is best? Any other things I should check before carb replacement?
- paulpauly7
- CB900F
- Posts: 1945
- Joined: Tue Feb 21, 2012 6:57 pm
- Location: nz
Re: 1988 elite runs too rich and cannot adjust
oem is allways best
86 Nifty Fifty (spree)
ZX disk brake
Kitico 120kmh speedo
AF18 ZX ported
Polini corsa
Malossi crank
CTmani
24mmOKO
40pilot118main
Scorpion pipe
8.44 to 1
Michelin s1
71.3mph
92 yz125, 94 crm250
ZX disk brake
Kitico 120kmh speedo
AF18 ZX ported
Polini corsa
Malossi crank
CTmani
24mmOKO
40pilot118main
Scorpion pipe
8.44 to 1
Michelin s1
71.3mph
92 yz125, 94 crm250
Re: 1988 elite runs too rich and cannot adjust
How much oil are you adding to the fuel tank?
89 Elite E
Re: 1988 elite runs too rich and cannot adjust
I do not add oil to the the fuel tank. i add it to the oil tank and it is injected.
- kingkamehameha
- CB900F
- Posts: 1215
- Joined: Sat Apr 16, 2011 1:11 pm
- Location: kailua kona
Re: 1988 elite runs too rich and cannot adjust
How much compression are u at
ua mau ke 'ea o ka aina i ka pono o hawaii
Re: 1988 elite runs too rich and cannot adjust
I have not checked it, can you tell me the connection between compression and rich burn?
- swimmingfree
- CBR1000RR
- Posts: 3357
- Joined: Tue Jun 14, 2011 12:28 pm
- Location: mich.
Re: 1988 elite runs too rich and cannot adjust
i wood get a new plug and set it at 25 and see how thing go from there...
swimmingfree
swimmingfree
handicap (dyslexia)
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
Re: 1988 elite runs too rich and cannot adjust
Will try..... Thanks
- Wheelman-111
- Moderator
- Posts: 11322
- Joined: Wed Oct 22, 2008 5:09 pm
- Location: Deepinnaharta, Texas
Re: 1988 elite runs too rich and cannot adjust
Greetings:
Sound advice so far. Also check the air filter element. The foam material has a way of going from "open-cell" to "closed-cell" after only a few decades. If it's squishy instead of "springy" it needs replacement. The old filter simply makes the intake draw too rich from excessive intake vacuum.
Sound advice so far. Also check the air filter element. The foam material has a way of going from "open-cell" to "closed-cell" after only a few decades. If it's squishy instead of "springy" it needs replacement. The old filter simply makes the intake draw too rich from excessive intake vacuum.
Wheelman-111
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
- kingkamehameha
- CB900F
- Posts: 1215
- Joined: Sat Apr 16, 2011 1:11 pm
- Location: kailua kona
Re: 1988 elite runs too rich and cannot adjust
do a compression test, clean your carb, test the bystarter, check your reeds. Also i always start off with a new plug and filter when doing this type of troubleshooting
ua mau ke 'ea o ka aina i ka pono o hawaii
Re: 1988 elite runs too rich and cannot adjust
Thanks...will give it a try
- swimmingfree
- CBR1000RR
- Posts: 3357
- Joined: Tue Jun 14, 2011 12:28 pm
- Location: mich.
Re: 1988 elite runs too rich and cannot adjust
do you no what jet are in the carb you have on the bike ???
were id the pin in the middle of the slide set at ???
has inthing helped ???even a little??
whay are you running the the other carb and not the stock carb???
swimmingfree
were id the pin in the middle of the slide set at ???
has inthing helped ???even a little??
whay are you running the the other carb and not the stock carb???
swimmingfree
handicap (dyslexia)
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
Re: 1988 elite runs too rich and cannot adjust
THanks ...... Going to try the plug and filter suggestions today.