Flexible Throttle Body Tool 0.85 GPH Nozzle (31608B)


Flexible throttle body tool is used to perform a gasoline fuel induction service through the throttle body with the fresh air boot removed. The 0.85 GPH nozzle is a multi-purpose flowrate and provides good induction service for common engine sizes.

Throttle Body Tool for:
Fuel Service Tool
(FST16 and FST24 #31608B)

SKU: 31608B Category: Tags: , ,
SKU: 31608B Category: Tags: , ,
Features of Flexible Throttle Body Tool 0.85 GPH Nozzle (31608B):
  • Permits visual inspection while performaing induction fuel service with fresh air boot removed
  • Designed to interchange with multiple nozzle options for the Flexible Throttle Body Arm
  • Rectus male connector machined in the body
  • Spray nozzle tips can be removed for cleaning or replacement

Flexible Throttle Body Nozzle Tool Sets:
31606B – 0.65 GPH Nozzle
31608B – 0.85 GPH Nozzle (Standard) – THIS PRODUCT

Nozzles Only:
31606N – 0.65 GPH Nozzle
31608N – 0.85 GPH Nozzle (Standard)

Flexible Throttle Body ‘S’ Tool Sets:
31606S – 0.65 GPH Nozzle
31608S – 0.85 GPH Nozzle (Standard)

Induction ‘S’ Tool Only:
31606A – 0.65 GPH Nozzle
31608A – 0.85 GPH Nozzle (Standard)

Additional information

Weight 0.4 lbs
Service Instructions


① Depressurize tool before removing fill cap. Fill with injection cleaner.

② Attached required fuel injection adapter to vehicle and service tool. Disengage vehicle fuel pump.

③ Set tool pressure required for engine. Open service hose valve and start engine. Run all cleaner until engine stops.

④ Remove tool & fuel injection adapter. Re-engage fuel pump.


① Depressurize tool before removing fill cap. Fill with injection cleaner.

② Attach “S” Tool or Flex Nozzle Tool for induction service.

③ Close service hose valve and set tool pressure to 60 psi.

④ Install “S” tool in fresh air tube at throttle plate, or set Flex Nozzle Tool from throttle plate with fresh air tube removed (disconnect MAF sensor).

⑤ Run service on warm engine at 1200 RPM. Blow out 3-4 times during service to strip soot/carbon and clear induction system.

⑥ After service, run 10 min. then drive briskly to clear induction system.

⑦ Reconnect MAF sensor and clear any engine codes.


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