M35 Coil Packs Continued

[conan7772]

To answer Yangs question, idle is mildly rough, but definitely noticable and varies.

It started straight after fitting new plugs.

So either I have a faulty spark plug, or the 7's make a difference on idle from the factory spec 6's that were in it, or one coil pack has deteorated / been damaged.

The old plugs looked really old, so may have damaged coils.

They look original so are probably 15 years old.

I've read coil packs do lose their effectiveness over time.

I have had all the symptoms below :

Hard starting - hot

Inconsistent fuel consumption- did a run down to the snow- got 380km with a full tank, loaded a bit

Rough idle- pre new plugs, idle was so smooth, I was frequently checking the gauges to see if the engine was running.

Stalling, a while ago.

Car seems louder and engine sounds different- cruising.

On hard accelleration it all seems fine, just idle and cruise.

It is an expensive trial and error but with all the above..

thanks for all the advice.

having said all that the car just made 237 kw

Edited June 25, 2016 by conan7772

[YangLIU]

for the hard starting when hot, i think someone already told you about the bigger injectors? so maybe you can try jump another battery together with your stock one then start engine again when hot.

for roughly idle, the idle is good with old plugs? beside coils, did you try another AFM

also after stall, can you restart the engine? or consistently stalling after first stall? any black smoke when roughly idle?

anyway, i have spare stock coils/AFM/throttle body if you want to do cross-check.

btw, did you sort the ignition cel problem?

Edited June 25, 2016 by YangLIU

[conan7772]

hot starting is much much better now, Jez did some magic there.

didn't try another afm, don't think mine has any faults

after stall, could start engine straight away, idle was very low back then, now with e-manage much better

no black smoke

ignition cel still not fixed- chip didn't work, or maybe ecu picking up bad coil pack ?

I'm gonna get new ones anyway, getting old ones is like buying old spark plugs

[conan7772]

anyone know the genuine Nissan part number for coil packs

I'm getting $208 each from Amayama- $1280 for a set ...

using 22448-AL615

cheers

Edited June 25, 2016 by conan7772

[DrLui]

I use this website for part number, works great and i have been into the local Nissan dealer with a printout and they were able to source exactly what i needed

http://jp-carparts.com/nissan/figlist.php?maker=nissan&type=153&cartype=8

as for the part your after see attached