number 1 cylinder no spark

Discuss topics related to the VG and VE series engines.
Posts: 1
Joined: Sat Jul 12, 2014 9:47 am
Car: 1991 300zx 2+2

number 1 cylinder no spark

Postby sharneil » Thu May 12, 2016 5:53 pm

I have a 1991 2+2 manual trans. I have been able to do most repairs for the 5yrs I have owned the car until now. I'm stumped. My number one cylinder is not getting a spark. I have replaced the plug, ignition coil and the ptu. I still get no spark in that cylinder any ideas?

Posts: 1227
Joined: Tue May 13, 2008 5:13 pm
Car: 1991 Fairlady Z (JDM) Twin Turbo

Re: number 1 cylinder no spark

Postby Sgt » Mon Jun 06, 2016 9:35 am

The check wirewire (the looped wire off the PTU) is connected to cylinder 1. If you have a timing light, hook it to the loop and use it to verify there is a signal for it to fire.

Use a multimeter set to continuity, with the car off and test each lead off the cylinder 1 coil pack plug. Use this diagram
Put a probe of the multi meter on a lead of the coil pack plug, then the other probe on the other end of where the wire goes on that diagram. This will help find/rule out a broken wire.

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