Fire - Plug Questions... Advice~

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
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vape-one
Posts: 416
Joined: Wed Oct 29, 2008 6:01 pm
Car: 1990 300zx

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I don't know what the firing order is but when I unplug the coil packs while Z is running all of them change the idol but 2 cylinders... one of the 2 is burning really black(Middle on Passenger side) an the other one is on the driver side near the fire wall an it doesn't look like its doing anything(pretty much clean an wet) The rest of the 4cyl are a little white an running lean... I put different plugs in an now its running worse than it was... but they were outa my old Z so they may be fouled ...... ??? My Question is what setting do I put the ohm tester on to check the coils to see if they are getting power from PTU... Do I do this while Z is running??

Passenger side Plugs...

Driver side Plugs...



When I change the Middle Passenger side plug it seemed as if it was running more powerful than before.. but when I unplugged it ... Never changed anything... I have Xtra set of coil packs from other Z so i just need to make sure PTU is supplying juice to coils... How?? Bottom right hand Driverside is worrying me the most cause it doesn't look like it's doing Anything...

Any advice would be greatly appreciated...


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HOST
Posts: 141
Joined: Thu Feb 28, 2008 9:01 am
Car: 1993 300ZX N/A [SOLD] 1992 300ZX 2+2 [SOLD] 1992 300ZX N/A [TT Project]
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vape-one wrote: I don't know what the firing order is but when I unplug the coil packs while Z is running all of them change the idol but 2 cylinders... one of the 2 is burning really black(Middle on Passenger side) an the other one is on the driver side near the fire wall an it doesn't look like its doing anything(pretty much clean an wet) The rest of the 4cyl are a little white an running lean... I put different plugs in an now its running worse than it was... but they were outa my old Z so they may be fouled ...... ??? My Question is what setting do I put the ohm tester on to check the coils to see if they are getting power from PTU... Do I do this while Z is running??

Passenger side Plugs...

Driver side Plugs...



When I change the Middle Passenger side plug it seemed as if it was running more powerful than before.. but when I unplugged it ... Never changed anything... I have Xtra set of coil packs from other Z so i just need to make sure PTU is supplying juice to coils... How?? Bottom right hand Driverside is worrying me the most cause it doesn't look like it's doing Anything...

Any advice would be greatly appreciated...
Injectors and/or coil packs.

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vape-one
Posts: 416
Joined: Wed Oct 29, 2008 6:01 pm
Car: 1990 300zx

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The TPS wasn't hooked up... So now im gonna pull some plugs an ground them out an see what color the spark is... if there is any at all.. !!!

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vape-one
Posts: 416
Joined: Wed Oct 29, 2008 6:01 pm
Car: 1990 300zx

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All the plugs are firing... My next step is to put my old CAS on my new Z.. Least I know that it was in time... Also I am gonna use my old Air Intake...

http://s292.photobucket.com/al...5.flv

http://s292.photobucket.com/al...5.flv

Some one please help... Seems like Catalic converter is clogged.. But thats not it ... Ya think its outa time... I got a code 55 all clear...

Should I check IAC??? AIV???

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vape-one
Posts: 416
Joined: Wed Oct 29, 2008 6:01 pm
Car: 1990 300zx

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Any help by watching Videos???


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