Hi all,

I have a datsun 1200 ute running (used to anyway) with a CA18DET and a Stinger 4424 EMS (I am using the stock CAS and have tried both the new and old one, and I am using a map sensor). I swapped my old CA for a fresh version recently and now I cannot get it started. To date i have:

had the injectors cleaned
changed the fuel pressure regulator for one that I know works
checked fuel pressure
changed the wiring to all ignitors to make sure they fire with a strong spark
changed the spark plugs (NGK iridiums)
checked to make sure all injectors fire, as well as all spark plugs
checked base timing

Everything in the list is ok except for the base timing.

The timing should be 15+- 5 degrees BTDC.... to check this with a stinger EMS, you set the base timing value to locked, and then (i am using an inductive timing light), then check the timing. As per Timing.jpg (
) , the reference point when looking at at the front of the engine is on the top right, however the light is flashing and marking the timing to the left.

As per the s13 engine manual (
):
I then, turned the engine over until the cylinder head is right at the top of the compression stroke. The timing marks on the pulley then lined up correctly with the timing reference point....

I removed the cam cover and as per the above diagram, the two white marks on the cam gears were in the correct position, and the number of teeth between the marks was correct. See


I also checked to make sure the aligning half moon on the cam gear is still there so that the CAS can only go in one way. However, i did notice on the old engine that s missing (could someone have deliberately removed it to adjust the base timing)

They only thing I didnt do last night was remove the crank pulley and bottom timing cover to check the position of the crank and the marking there......

My question is, what could be causing the timing to be so far out....


Sorry, the pics dont work

if i were u i would check the number of teeth between the cams and the crank as well... even 1 tooth out can have an adverse effect... i would think that the enginge would still start unless it's way out....


sorry i just read it again...
did u say the locating half moon was missing on ur old motors cam???
if so u probably had it tuned originally with the cas way out of alignment...

yup, on the old engine the locating tooth is missing - so yeah - it could have been out in any way.....

yeah I was thinking that could be the case (in wrong and tuned) - but I spoke to him last night and he says he has no memory of ever taking it out (unless SSS auto who he bought it from had played with it......

I know the CAS works to the that it fires all the injectors and spark plugs.... but is there any other way to test whether it works.....

it will still fire the injectors...
just at the wrong time...
u will just have to retune the ecu to the new cas position..

If the timing appears to be out by 30 degrees, can you retard the the CAS by 30 to compensate?

If this fixes your problem, it is just a case of reinstalling the CAS properly and shifting all your timing points by 30.

Demojob - yeah thats where the issue lies - the ECU needs to know what the base timing is, to do this, you set the ECU timing to locked (this is as per the manual and the EMS staff), take the base timing using a timing light and then set the base timing in the EMS to be the same, however, this needs to be between 5 and 15 degrees BTDC for a nissan engine....

Cable_Tie - the CAS can be retarded, but not by a large amount from what i understand.

Thanks guys - all food for thought.

This is pissing me off, all I did was swap the engines, I kept the old wiring loom....

Hi there, just a few suggestions:

Are you using the standard ignition system and are you running in it Direct fire or wasted spark?? im prettty sur eit would be direct fire as the stinger is able to do that.

head into the ecu setup and double check all of you ignition and fuel offset parameters, make sure they align properly. I think the offset for iginition is something like 3,0,2,1 and the injector offset is 0,1,2,3,?

If that all looks ok DONT #### WITH THE CAS SETTINGS!!! if they worked before they will work again, unless your cas is rooted.

Next step is to set some ignition advance as by the looks of things its running pretty retarded. Set the ignitiion overall trim to +30 degrees and try to start it, if it fires up hook up your timing light and check the and check the timing. Cross refernce this with the timing dipsplayed by the ecu, and if they are not the same you will need to adjust the ecu trigger degrees BTDC setting, do this until both the engine and ecu are showing 30 advanced timing, and then back off the overall trim advance (the 30 degrees) until the engine is at 0 BTDC and the ecu displays the same thing, 0 degrees timing.

If you find trying to align it on 30 degrees advance try 20 or something less full-on.

If you have any other questions, let me know.

Hayden

Geezuz - i am a f*cking idiot!!!!! Just read the user manual for the Stinger, it states in it....

All Nissan Crank Angle Sensors need to be re positioned.

Nissan Sensors are normally set to 60 deg BTDC.

The ecu requires the trigger sensor to be positioned approx.
5 - 15 Deg. BTDC.

If the engine is fitted with a Distributor the Rotor button(if driven via a gear) or optical sensor or disk needs to be repositioned (if no gear drive) .

So the timing is correct given the CAS as it is fitted now, but I need to reposition it so that it reads at 5-15 BTDC.... I need to remove the locator in the Cam gear and reposition the CAS from there........


Thanks for your help guys.... I need to read more.

haha well there you go, i wish wolf had that sort of support in their manuals... g/l with it