Sync loss? 1500rpm

[kurtw85]

Hi guys, after a few year absence I've decided to return to the fun!

I am having an issue with sync loss I believe, car starts and runs at idle alright, but slowly raise the throttle and it gets to 15-1800rpm and starts missing. As you can see in the log. very rich as well.

mikevisit.msl

MS3 3.57 ms3x(ms3 1.3.4 20150123) (tunerstudio v2.6.19)

Car:
'80 Corolla
Engine:
3.0l I6 12v single turbo toyota(6m)
Ignition:
36-1 crank wheel, ford vr sensor, gm ws coils & Quadspark
Fuel: 440cc low imp toyota injectors

2015-11-01_11.23.30forums.msq

Any input on what to tackle next? I have played with r56(3 turns cw) and r52(2turns cw) a little now, with no luck.

compositeforums.csv

Any direction here would be greatly appreciated!

[kurtw85]

another run log if that helps any

mikehelping.msl

[grom_e30]

can you take a tooth log?

[kurtw85]

Hope this helps, going nuts over here

[grom_e30]

how does the signal look with both pots full ccw?

[kurtw85]

I will tooth log when i get home this evening and post back up. THANK YOU for your help and responces, really appreciate it.

[kurtw85]

Two tooth logs, one under crank and one running.

crankingafterwork2015-11-02_19.25.58.csv

afterworkIII2015-11-02_19.17.14.csv

[grom_e30]

the tooth pattern around the gap looks funny, not sure if it will help but worth a quick try, change the ignition input capture see if it clears it up.

[kurtw85]

Falling edge

fallingedge2015-11-03_17.09.11.csv

Rising Edge

risingedge2015-11-03_17.12.13.csv

looks like rising edge is correct?

from full ccw I should adjust r56 and r52 how much at a time? half turns? Trying this again this evening.

Thanks a lot for your time and input!

[grom_e30]

yeah rising looks like it, you can adjust on a running engine if you are careful and watch the log at the same time

[kurtw85]

so here is a tooth log of the engine cranking running and slowly reving to its sync loss at 15-1800 or so.

note this is with r56 turned approx 2 turns cw and r52 1 turn cw

[grom_e30]

try a 10k resistor inline with the vr +

[kurtw85]

Will Report Back tonight!

[kurtw85]

10k resistor seeems to have got me reving now!

wooooot! THANK YOU VERY MUCH SIR! Will post a few logs momentarily

first_log_postresistor_2015-11-04_19.06.49.msl

[kurtw85]

after the resistor install I went ahead and ran her to verify it worked, then I turned the r56 and r52 back to see if it still worked, and I does, to me my signal looks nice now, can someone please verify?

let me know what ya'll think!

zerod_2015-11-04_19.41.53.csv

zerod2015-11-04_19.41.29.msl

[grom_e30]

id say the zerod logs look good