7mgte sync loss while cranking

[Jdmfreak]

hello all i was attempting to set my timing before first start and the timing light only flashed about once a second during cranking

and i was getting sync loss 11 and 17

ms3x 3.0

7mgte stock cas ne for crank g1 for cam

i grounded the sensor g2 , tryed adjusting the pots one turn cw barely got a reading and at 3/4 cw still noisy as all getout

will not start

[eraezer]

Hello,
have you verified that your battery is in good condition? Mine was down a cell when I first set up my 7mgte so I got those sync losses and so one.
With a battery booster attached those problems were gone.

[jsmcortina]

The composite logger is often more useful for crank/cam ("dual wheel") configurations.

James

[Jdmfreak]

Hello,
have you verified that your battery is in good condition? Mine was down a cell when I first set up my 7mgte so I got those sync losses and so one.
With a battery booster attached those problems were gone.

I have a yellow top optima that is in good condition and the battery charger was hooked up during a few of my tests with no change

The composite logger is often more useful for crank/cam ("dual wheel") configurations.

James

Would it help if I logged that and posted it up?

This is what I am going to try tonight




Maybe that will clear up the signal enough to get it to spark more so I can time it...


Edit : just for clarification... Still won't run coils fire fast during in car test but once actually cranking it's firing almost exactly when the sync loss counts so once every second or 2

[eraezer]

Hello again,
I have you verified that you're spot on with cranking timing?
Use fixed timing and set the cranking timing to 10 deg so it will be easy to check on the harmonic balancer.
Do this so that you know that your #1 tooth angle is correct.

I did not need any cas wiring modifications to get my 7mgte to start.

EDIT: I saw now that you can't even time the engine.

[Jdmfreak]

If this is correct I am using NE for crank and g1 for cam with 18 or 20 tooth angle.... (it looks more like 18 on my crank notches go 15,10,5,0 and it's closer to the 15notch than the 10is)

[3tc power]

i drew this up some months back because i knew other would need it! hope this helps you.

[Jdmfreak]

Thanks that how I'm wired:-)

[nismoautoxr]

have you tried triggering from the falling edge on the second trigger? I cant remember what I was using on my 4AGE but I can remember having to try several different arrangements before I got it to go.

[Jdmfreak]

Composite log uploaded


ok so i tightned my gap on the vr sensors and double checked tooth #1 and as it seems to me its closer to 18 btdc i set it as such

the third time i cranked for a second when i stopped cranking it backfired

how does the composit log look ?????do i need to adjust the pots????

[nismoautoxr]

You are dropping teeth on your NE signal and the tooth time is all over the place. Cam signal seems to be OK but not sure why it missed a couple times ...thinking you stopped cranking and started back? This a 24 tooth nippondenso right?

[Jdmfreak]

Correct

[Jdmfreak]

Yes I stopped cranking a couple times,
I turned the pots all the way ccw and took another
Composite log I'll run it the house and upload it in a sec

[Jdmfreak]

here is with the pots fully ccw is it better now????
and i tried falling edge no change i can see

[slow_hemi6]

That doesn't look too bad. Can you go low tech and watch the not synced/ synced indicator on the TS dash while cranking and see if it goes into synced ok? If it syncs up at least noticeably you should be getting sputters or trying to fire up.

[Jdmfreak]

ok so when i set the tooth #1 angle i followed the directions for my cas and tooth #1 was around 18-20 deg btdc

once i got everything adjusted so that the timing light would fire enough to check timing during cranking my timing was about 60deg btdc so i locked timing at 10deg btdc in tunerstudio and adjusted the tooth#1 angle until my timing light showed it was firing at 10degbtdc my #1 tooth angle ended up at 82deg btdc

did i do this incorrectly????


edit: i belive this is my problem however i cant use the wizard because its not highlighted.....would i need to register tunerstudio for this function????

[nismoautoxr]

that looks a lot better than the first one but the tooth times are still pretty messy . It might run on that .

You did the tooth number one right as long as your crank timing matches the commanded timing . Trigger wizard is not used with toothed wheel decoders like the one you are using .No need to worry. Its supposed to be greyed out

[Jdmfreak]

it matches but i dont know why i was soo far off to start...... what is the chance i am 180 out?????

or 360 or whatever

[nismoautoxr]

if your results vary greatly from other guys who have installed MS on the same application as yours...the CAS is likely not in the factory location but if you are using coil on plug ignition im not sure its earthshattering ...just differant. Will it run ?

[slow_hemi6]

If you think you might be firing on the wrong cycle you can change to Wasted Cop in tuner studio. See if it wants to fire then.