Throttle Body ‘S’ Tool – 0.85 GPH (31608A)


Replaces ZW31500

Throttle body ‘S’ tool is positioned inside the fresh air boot to perform a fuel induction service on gasoline engines.  This service cleans the throttle body and air induction system increasing engine performance and reducing vehicle emissions. The 0.85 GPH nozzle is a multi-purpose flowrate and provides good induction service for common engine sizes.

Induction ‘S’ Tool for:
Fuel Service Tool
(FST16 and FST24 #31606A)

SKU: 31608A Category: Tags: , ,
SKU: 31608A Category: Tags: , ,
Features of Throttle Body ‘S’ Tool – 0.85 GPH (31608A):

Additional information

Weight 0.2 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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