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[Datsun 1200 encyclopedia]

Anti-diesel valve

From Datsun 1200 Club

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Category: Fuel System

Starting with 1973 USA models, the anti-dieseling valve was added. This is an idle-circuit cutoff solenoid also known as idle stop solenoid. As soon as the key is turned off, the engine dies. It has little to no effect above the idle range -- if the engine is above 1500 RPM it will still keep running.

Contents

Overview

Anti-Diesel solenoid valve comes on some 1973 and newer carbs.

1006.jpg

Wiring

  • Yellow wire - fuel cut solenoid To general IG circuit (hot when key is Run or Start)

15572.jpg

Troubleshooting

  • Turn the key to IGN, engine OFF. Then unplug the connector at the valve (under the engine). Does the Anti-disel valve have 12V at the wiring connector?
    1006.jpg
    test to see if you have power at the plug that the solenoid connects to

No: Check your fuses...trace the wires and see why it's not getting power

Yes: Have someone turn the ignition on & off while you listen carefully to hear the 'click' as it is turned on.

  • No click? Bypass the valve (as below). If this allows the engine to idle correctly, then repair the wiring or replace the solenoid with a working one.

Bypassing the Anti-Diesel Valve

Unscrew the solenoid from the carburetor and take out the 'pin' in the middle. Then re-install the solenoid. Start engine to see if all is well.

It will no longer 'cut' the engine immediately, but otherwise the engine will run well with this pin removed.

Part Numbers

USA B110 16916-H7010 ASSY-CUT,FUEL 0772-1072 [DCH306-4/DCH306-5] NLA
USA B110 16916-H7011 VALVE-ANTI DIESELING SOLENOID 1172- NLA
JDM B210 16916-H5002 VALVE-anti-dieseling solenoid [DCH306-2]
USA B210 16916-H5002 1974
USA B210 16916-H7200 1975-1978 except GFU 
USA B210 16916-H7280 1976-1978 GFU (5-speed)
Aftermarket Anti-Diesel valve
TOMCO 8134 $36
* Chevy Luv Truck 1975-1980
* Ford Courier Truck 1979-1980
* Honda 1973-1976
* Mazda 1975-1978
* Datsun 1973-1983
* Subaru 1974-1980

NOTE: DCH306 valve differs from DCH340

B310 USA

Single-wire type (CAN & early USA)
* 16196-H7200 VALVE-ANTI DIESELING SOLENOID $75 USD
24348.jpg
Double-wire type (KFU & late USA & A12.USA). One wire is grounded.
* 16196-H9970 $66 USD superceded 16196-H7280
** Also Fits
** N10 USA 1980-1982 CAL IACV-FICD SOLENOID VALVE A14/A15/E15
** N10 USA 1981 FED IACV-FICD SOLENOID VALVE A15
* Borg Warner ECS512 Idle Stop Solenoid
DCH306 carburetor (1979-1980)
16196-H7200 VALVE-ANTI DIESELING SOLENOID A14.USA, A15.USA.AUTO, CAN 
16196-H7280 ANTI-DIESELING SOLENOID VALVE A15.FED.MANUAL, A14.KFU, A12.USA 
DCR306 carburetor (1981-1982) 
16196-H7200 A.D.S.VALVE CAN
16196-H7280 ANTI-DIESELING VALVE USA

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This page has been accessed 8,893 times. This page was last modified 20:09, 26 October 2012. Content is available under Datsun 1200 Club.