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Sunday, August 25, 2013

RB26DETT Ignition System Troubleshooting

The RB26 is a coil on plug ignition system. This allows for the individual coil to send more voltage/current to a plug, with less duty cycle than the old school single coil setup. The R32 and R33 have a separate transitor/ignitor unit while the R34 has a built in transistor in the coils.  On the RB, the ignition coils and coil harness are located in the valley of the engine. Over time, the coils and the harness are slowly cooked in the harsh environment of the engine valley.  The connectors to the coils crack, and the terminals get loose.  The crimped connections inside the harness get corroded. Do Luck Direct Power Ignition Strengthening Kit. 
RB26 ignition system
RB26DETT ignition coils

Ignition system troubleshooting flowchart

Setting ignition timing and checking TDC on the RB26 in the Nissan Skyline GT-R. forum for discussion about importing vehicles over 25 years old to the US.

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