Hiya folks, can someone tell me how I perform timing check on me Z. I've got a strobe light and as far as connecting + & - leads to the battery but which is No.1 cylinder to clip the inductor on??? Or is 1 of the 3 wires on the coil packs??

Also what's the best way to test I'm running on all 6 burners, is it just a case of pulling each coil connector off to see if the engine note changes???

cheerZ Jon....

Not sure whether an inductance strobe works on a Z because you can't really see the HT lead when the coil is mounted directly on top of the spark plug. However, you could try cliping it on the LT wires you mention. No1 plug is at the front on your left, when you're standing looking into the bonnet.

 

As you say checking all cylinders are running is just a case of pulling each coil pack connector off.

 

[This message has been edited by AndyP (edited 30-10-2001).]

Get yourself down to your local kindda halfords, buy a long booted HT lead, pull off 1st coil pack, insert 1 end in to coil pack and the other in to cylinder bore on to spark plug, may need a piece of thin wood just to help push boot on plug as it's way down, for regular checks, insert HT lead through piece 10-12mm tube about 12ins long, this will make putting lead on plug quicker.

Smithy

Alternatively, get a strobe that works off a low voltage induction connector. There is a black wire 'loop' taped to the main loom underneath the PTU (easy to see, it's a single black wire in a loop shape, quite thin), and clip the strobe to that wire.

 

That wire goes high when No1 coil fires.

 

Az

Thanks guys, checked it this morning but any idea what it should be, I checked it at idle normal temp, indicated about 21 degrees revved it and it shot up past 30. Is this normal??

cheerZZZ Jon...

Sure it was properly warmed up ????

Should be 15 deg BTDC on tickover (6-700rpm). Will go up to 30-40 deg BTDC if you rev it though - don't worry about that. It's at tickover that the base figure is set, after that the ECU takes over.

so to confirm this.

15dtdc and this is even on modded cars ?

Depends what mods you've done. If you have messed with something and have detonation then it may be backed off a little to say 17 deg BTDC, but if you're after extra power then the dangerous way to go is forward a little. I think JWT recommend never going further than 13 deg BTDC, but I'm sure some people have over done it. However, if you have a different ECU then I would expect that ECU to work from the standard Nissan baseline of 15 deg BTDC, after that it can do what it likes. Set it wrongly and you can create havoc, because the ECU 'thinks' the timing is somewhere different !

 

[This message has been edited by AndyP (edited 30-10-2001).]