sr running poopy. all details inside.

[2fast4y0u]

ok, sorry in advance for the long story but this has been an on going battle of craziness.
long story as short as i can make it...
car hasnt ran in 2 years to to funding issues. i bought a complete new setup and built the engine like crazy.
short list of new parts: gt2871rs, 850cc injectors, taka turbo lines, new cometic head gasket, RS enthaply tuned ecu for above upgrades.

anyhoo, go everything installed and triple checked everything from top to bottom, left and right. torqued everything to spec and told. set timing to FSM specs as well.

recently went to fire this bitch up for the first time in 2 years. primed everything for oil pressure and drained 2 year old gas and replaced with fresh 93 octane. It starts with out having to push on the throttle, it idles by itself, but has a weird miss fire. i had a boost leak which is now fixed 100%. my cylinder temps at idle and normal operating temps where as follows: Cylinders 1-3 200-250 degrees, cylinder 4 was 150 degrees :(
so i switched the coil pack, injector and spark plug to cylinder #3 and visa-versa. the issue did not transfer so i knew it was something with #4. i did a compression test today with the following results. #1 157 #2 158 #3 155 #4 155

i let the car idle for about 5 min with out touching anything and the #4 issue seem to go away.

as stated before, i checked, rechecked, and checked again on the timing. If something is wrong in these pics let me know...as far as i know its perfect.

http://img154.imageshack.us/img154/2131/dsc0017qf.jpg
http://img215.imageshack.us/img215/1812/dsc0020p.jpg
http://img188.imageshack.us/img188/4245/dsc0022kn.jpg
http://img32.imageshack.us/img32/4835/dsc0019ro.jpg
http://img98.imageshack.us/img98/4859/dsc0024ej.jpg
http://img181.imageshack.us/img181/753/dsc0023g.jpg

so i got a timing light and started to check it. i let the car warm up and checked the timing at 850-910 rpms and it is on the second notch from the RIGHT. i shut the car off and unplugged the TPS. started the car back up and check timing again. Same spot.
if i mess with the CAS i can get the timing to move over the second notch from the LEFT, but the car dies instantly.

So, when the timing is to "spec", the car dies. but when its running at the second notch from the RIGHT, it misses up to a higher rpm that im not sure what the number is off the top of my head.

WHAT GIVES???:cool: im so stumped!

[jspaeth]

Stock cams, right?

And you're sure that the Enthalpy tune is correct?....definitely something weird timing related.....

[2fast4y0u]

cams are hks 264 step 2 intake and exhaust

i verified with enthalpy that the tune was good and correct. They assured me everything was correct.

i will be putting a wideband on it hopefully tomorrow or monday. need to check the mixture
i zeroed out my Safc on all fuel corrections because the tune is for the 850cc's. so i would imagine there needs to be some adjustments made.

[steve shadows]

what about your crank though?

Is the link on the right slot on your crank sprocket?

There is way to double check if your chain is timed right without using the links as well...

If you could swap in another CAS that you know works I would try this too to help diagnose the issue.

However if the ECU has a timing of say 40 at idle and you set your CAS at 15 instead of say 0 then the car is way too advanced and RICH and would die, so it could be the tune or ecu as well.

Try swapping your ECU onto another SR this could help too

[jspaeth]

what about your crank though?

Is the link on the right slot on your crank sprocket?

There is way to double check if your chain is timed right without using the links as well...

If you could swap in another CAS that you know works I would try this too to help diagnose the issue.

However if the ECU has a timing of say 40 at idle and you set your CAS at 15 instead of say 0 then the car is way too advanced and RICH and would die, so it could be the tune or ecu as well.

Try swapping your ECU onto another SR this could help too

...but then he would have to find another SR with the same cams/turbo/injectors to test out the Enthalpy ECU, right?

[KoukiMonsta]

...but then he would have to find another SR with the same cams/turbo/injectors to test out the Enthalpy ECU, right?

yes, but i would imagine it would be safe to "idle" the car just to test if ecu is good/bad

[2fast4y0u]

i dont know anyone else with my same setup.
i cant run the stock sr ecu on this setup because if gigantor the injectors.

i have an email into RS enthalpy, we will see what they say about the timing.
thanks for the help so far. i will be working on it tomorrow if i can come up with a solution.

Jay

[steve shadows]

I am banking on BAD ECU/TUNE or BAD CAS

[2fast4y0u]

i verified with enthalpy that the tune was good for my setup. they assured me everything is fine. i have an email to them about timing.
Even on a holiday weekend, they emailed me back. its 11:45pm where im at, and the dude has the time to help me out.

i can look for another CAS for sale, but im willing to say mine isnt bad. when i turn it, it does make changes. unless, something is messed up with it to the point of no return.

[KoukiMonsta]

any other 240's (well sr for that matter) in your area to test ur CAS?

[2fast4y0u]

no one close.
theres a few good things about owning a 240 in my area...no one with in 25 miles+ has one...but thats also the issue in this case.

[PinkPanther]

I used to live in your area and I'm having a similar issue with timing on my SR. did you figure out the problem? I know stock base time is 15 degrees before top dead center, which is the mark second from the right. When I went to check my base timing it was a solid inch and a half to the right of the 20 degree btdc mark which means that it was set at about 35 degrees advanced. I was like oh shit and moved it right away to the 15 degree btdc mark which for some reason made the engine stumble then die and it wont idle at all or rev at that setting even with the TPS plugged back in. I moved it back to 35 degrees btdc and it went back to idling smoothly. I'm stumped

[2fast4y0u]

well, turns out that there were issues with the Enthalpy tune i had. one chip was burned up. i sent it in for a re-flash and when it came back, i started the car and it has never idled better.

now i have to work out some other issues that are not timing or tune related. some one sold me the wrong size injectors :|