1972 T120 Hustler carb problems

General discussion about Street two-stroke Suzuki motorcycles.

Moderators: oldjapanesebikes, H2RICK, diamondj, Suzsmokeyallan

Post Reply
Treforissa
Still in the Driveway
Posts: 2
Joined: Fri Jul 05, 2019 6:57 am
Country: United Kingdom
Suzuki 2-Strokes: Hustler

1972 T120 Hustler carb problems

Post by Treforissa »

Rebuilt carbs with all new parts but having problems that are baffling. Will start when choke is depressed, will rev with choke but not without until revs get to around 4500rpm then it revs freely above this threshold. Any ideas guys as I'm stuck.
karl pa
To the on ramp
Posts: 490
Joined: Sat Sep 05, 2015 3:14 pm
Country: us
Suzuki 2-Strokes: GT
Location: southeast pa

Re: 1972 T120 Hustler carb problems

Post by karl pa »

Most times it is clogged or restricted pilot circuit, even with new parts you must get the small passage ways clean in the carb. I like to blow carb cleaner and/or air through everything to check for flow.
76 GT185
77 GT250
77 GT380
76 GT500
73 GT550
73 GT750
74 GT750
71 T250 scrambler
75 T500 cafe
sportston
Expert racer
Posts: 1119
Joined: Wed Jul 10, 2013 12:04 pm
Country: England, UK
Suzuki 2-Strokes: FZ50, GP100, RG125 Gamma, GT380, Bandit 1200S

Re: 1972 T120 Hustler carb problems

Post by sportston »

karl pa wrote:Most times it is clogged or restricted pilot circuit, even with new parts you must get the small passage ways clean in the carb. I like to blow carb cleaner and/or air through everything to check for flow.
+1 on that. It only takes a little grain of dirt to bugger things up. Strip the carb all down completely and clean thoroughly and blow through with an airline or jet-washer. Don't forget to fit an in-line fuel filter if you don't already have one.
You mention new parts. Are they the correct carbs for the bike? If not, you could have the wrong jet sizes fitted.
Post Reply