New Zealand Datsun Club

I'm looking for some help / to be pointed in the right direction, I have not alot of experience with EFI, used to carbs and points, anyway the Z18ET in my bluebird seems to have a issue when you put your foot down it just coughs and splutters. it starts fine and if driven softly will run fine. I have checked the AFM seems to be working. plugs look ok coils are new-ish GT40's.

timings correct and was going awesome when i first got it. but seems to have developed this wee issue that seems to be intermittent

could it be fuel pump or computer? I have another motor im getting soon will try swapping computers over see what happens then


Can anyone shed some light on my issue?

are you SUPER sure its not your afm? have you tried disconnecting it and taking it for a thrash? it runs like absolute crap until you hit boost, then it should run rich as, but not cough or splutter once in boost

You might need to try another Crank Angle Sensor or another Ignition Module after the AFM these are the next most likely to go bad.

Steve , My Nissan Z manual has a few testing procedures for some of these electronics, although different models the electronics are of a simialr type and age

So if your keen to give it a nudge with the multi meter just let me know and we can take a look this weekend.

I tried taking the plug off the AFM and it just wont budge it feels like its gunna break off, mind you i can be a bit of an ape when it comes to that kind of thing maybe there's a trick to it and yea James it definitely sounds like a plan as A: i dont know bugger all about this kind of stuff and B: I'm trying to get it to run properly so you can drive it for akaroa

No worries dude, I will roll up on Sunday with the book and Multi meter !

sounds good! Bring petrol a rag and a lighter as plan B haha

datman310 wrote:I tried taking the plug off the AFM and it just wont budge it feels like its gunna break off, mind you i can be a bit of an ape when it comes to that kind of thing maybe there's a trick to it and yea James it definitely sounds like a plan as A: i dont know bugger all about this kind of stuff and B: I'm trying to get it to run properly so you can drive it for akaroa

Hey mate the AFM plug has a spring wire plug set up... you have to pry the spring clip outwards on both ends of the clip for it to release

yeah get a flat head screw driver onto the little metal band that clips around the AFM plug and just flick it off.

Bags lighting the rag if you decide to go that route, just let me strip all the suspension, brakes and driveline out first.

NO DEAL