Please Help, Cas Problem.

[QWK32]

I did try that but the problem is Im getting multiple sparks at the same time. Im sure the computor uses a wasted spark setup which makes it hard.

The other thing is it seems like the sparking is random depending on how fast I spin the CAS.

How do I know which stroke the number one piston is on ie intake or exhaust?

I tried unplugging the fuel line both into the rail and the return from the regulator and they both flowed a cup fuel in a couple of seconds but the pressure didnt seem massive, how much should there be?

Everytime I try and start it now, I pretty much get nothing followed by massive backfires I mean BIG.

One thing is I dont have the intake pipe on so its sucking straight into the throttle body although I cant see that making a difference.

it shouldn't be sparking randomly. it should follow the pattern i said 1 5 3 6 2 4. wasted spark would make it easier to set up be cause regardless if the cyl is on its intake or combustion cycle it is getting a spark. i.e firing order of (1,6) (2,5) (3,4) (1,6) (2,5) (3,4)

and if your running wasted spark then all your changing by having the cas one rotation out is the injector timing. 2 possiblities it could be would be its injecting on the intake cycle and the fuel goes straight in the cylinder, or the injector squirts onto the back on the valve and is taken in on the next intake cycle, either way its getting the fuel. so wasted spark would be easier to set up.

if its sequential and if it still wont run after setting it up the way i said in the last post then take the cas off, spin it through 180 degress and put it back on. if it is around the wrong way that will change the ignition timing from the intake stroke to the combustion stroke.

Edited November 20, 2007 by QWK32

[blind_elk]

Engine is at TDC compression #1 when the timing mark on the crank pulley aligns with the mark on the timing case, AND the marks on the cam wheels align with the marks on the cam cover backing plate.

Make sure it is set up correctly. The engine will only start with the CAS in one particular position, it will not start if the CAS is even 1 tooth out. You need to rotate the CAS shaft probably 30 degrees to get the teeth to align 1 tooth from the previous position.

[calais25t]

Okay I just got number 1 piston to tdc on the compression stroke and set the cas so it was letting a spark at that point, still no go and big backfiring in both directions.....

My set up is running a wasted spark so setting that is hard BUT, it seems for every rotation of the CAS it fires all 6 injectors??? Is this normal.

I had the car running a week ago but it was very rough and idled at about 1400rpm due to a leaking plenum gasket, so I pulled the plenum off and sealed it up.

Now Ive tried every concievable way to put the CAS in and Im scared to even turn the ignition on for fear of massive backfires.

There has to be an explanation for this is there anyone running a stinger 4424 that can give me a snap shot of their ecu setup screen even though I havent changed any settings its might be worth a shot.

Thanks very much for all the help so far.

[QWK32]

yes one complete rotation (360deg) of the cas should fire all injectors.

how are you running your wasted spark setup? banked standard coils or another way, eg, 3 coils 2 cyl per coil (falcon/commo way)?

here is a screenshot of a base map i got from EMS a while ago when helping a mate out with his. we didn't end up using it (we got it going before they sent it to me) but they said its just a base map to get it going.

Edited November 20, 2007 by QWK32

[calais25t]

Okay I have no idea how the coil packs are set up. They are splitfire series 2, so Im under the impression the ignitors are built in.

The map u have posted is a different version of the software than I have....

Hmmm, I have also read in the EMS help that with ems the CAS needs to be set 60 degrees BTDC which requires snapping the locating tang which might explain why mine is missing.

When i say injectors all fire in 1 rotation of the CAS I mean they all fire at the same time?? Is that normal??

[courier33]

#1 how do you know your on compression stroke on no.1 cylinder. did you remove the plug to check this?

#2 if you are running wasted spark, you will get a spark on both the exhaust and compression stroke of no.1 you need to rotate the cas so the spark your timing the cas with is the first one you get after the no.1 injector pulses. This is assuming your running sequential injection.

[courier33]

So that means your not running sequential injectors. Squential injection means that each injector fires in sequence as per the ignition sequence. You can run it as group fire injection which is what your explaning but its not as good.

[calais25t]

#1 how do you know your on compression stroke on no.1 cylinder. did you remove the plug to check this?

#2 if you are running wasted spark, you will get a spark on both the exhaust and compression stroke of no.1 you need to rotate the cas so the spark your timing the cas with is the first one you get after the no.1 injector pulses. This is assuming your running sequential injection.

I pulled the intake cam rocker cover off and watched the no1 cyl valve, and aligned the timing mark on the crank, with plug out to get TDC on compression.

Now obviously I cant tell when the No 1 injector pulses as they all fire at ounce so how am I ment to set it up.

[QWK32]

Okay I have no idea how the coil packs are set up. They are splitfire series 2, so Im under the impression the ignitors are built in.

The map u have posted is a different version of the software than I have....

Hmmm, I have also read in the EMS help that with ems the CAS needs to be set 60 degrees BTDC which requires snapping the locating tang which might explain why mine is missing.

When i say injectors all fire in 1 rotation of the CAS I mean they all fire at the same time?? Is that normal??

no thats not normal for them to all fire at once. in your ecu settings, under sensor setup, what is your injection arrangment? i think if its set wrong it will cause them all the fire at once.

btw what version software are you running?

shouldn't be to hard to set it up at 60 deg BTDC hey.

Edited November 20, 2007 by QWK32

[QWK32]

you need to rotate the cas so the spark your timing the cas with is the first one you get after the no.1 injector pulses. This is assuming your running sequential injection.

there is no real way to tell this because 1 and 6 will always fire together. nor does it matter with wasted spark.

[calais25t]

The software is 2.6.1.7 which may be to new for my ecu as mine is 4-5 years old.

I have looked in the help and it states they all fire together its called group firing.

Does anyone know an ECU (namely ems) wizz that may be able to come and have a look? I will pay of course..

Im in SW Brissy.

[QWK32]

you could try to set the cas up to 60 deg btdc and see if that gets it running before calling in reinforcements. you said it was running like a week ago but crap because of a manifold leak. so in theory it should still run. and the cas position it the only real thing thats moved.

i don't think the ecu would have changed itself, and even though from what you've said about the injector being set up as group fire, this set up will still work. could be set up better though. i.e batch injection

did you do the ecu install yourself?