so i have been having problems with cyl#2 not firing and was going to try and go thorough the wiring and try and replace what i thought was not working but i thought before i did that i would see if i was sparking at the sparkplug so i took it out and it was sparking so i thought it might be the spark plugs so i change all the spark plugs and put it back in all excited hoping it would work but it hasnt any ideas on what could be causing it to not fire that cylinder if im getting spark but no combustion my next thoughts would be fuel maybe ??? any help would be appreciated cheers jamie
Air Spark Fuel. Presumably you have air. Spark seems OK Check fuel- do a resistance check on your injector.
Buy a multimeter- it's worth its weight in gold when you have a Z. Looks like this: Then set it to measure resistance. Usually labelled with a symbol like this: Then find an online copy of the service manual. This link will help. EF/EC is my favourite section On page EF/EC 183 you will find the trouble diagnosis for electrical components- in this case, the INJECTOR. The injector has an electromagnetic coil, pulls a pintle out to allow fuel flow. If you have no continuity between the injector coil, then it's cactus. Pull off the connector for the fuel injector, and you will see a red connector down in the middle area of the engine- should have 2 metal pins (you are interested in the engine side, not the wiring loom side of this connector). Set multimeter to resistance, then measure with a probe on each pin. You should get between 10-14 OHMS. If all your injectors are within spec, you might have a sticky injector, or shit injector wiring. There is another procedure to check the wires paths between the ECU and the wiring loom side of the injector. This would be the next step.
hi guys so i went out and had a look at the injector connector and its green and nasty looking i borrowed a friends multimeter and on 2000 ohm it was reading 18 do i just replace it if so how hard would it be or would it be better to get someone to do it for me. cheers jamie
Clean the green crap off it and try again. Set your multimeter to 200ohm for a more accurate reading.
Injector connectors are simple to replace, there not polarity sensitive, and if one of the connectors is corroded/cracked looking shitty the rest wont be much better. Id replace them all.
i cleaned the green stuff off and set it to 200 and it was reading 15 so i plugged it back in and bang combustion on all 6 cylinders i just want to say a huge thank you to everyone that helped me out it is greatly appreciated thank you very much cheers jamie :br:
At jaycar shops, or other speciality electronics places (Hi-Fi, etc), they sell this stuff called Deoxit in a little spray can. Works wonders for keeping electrical contacts in tip-top condition. Just give the connectors a quick scrub to remove the crusty stuff, then spray and they should be good for ages. Good to hear you got it all sorted. Happy zedding.
