Mach

The older log are with piggy back, but now it has been changed to standalone and use internal pull-up. I understood the cause of dwell jump and that some of a hardware is causing the trigger error. The belt tension is as per the manual, but I will try more tension or other solutions. Ignition timing near the jump point is also almost correct, so for the time being, I'll deal with this by setting a smaller dwell time. @Adamw @Vaughan I appreciate your support.

One of a change is cylinder head skimming (0.2mm), so the length of timing belt (from crank to cam) may be a little shorten. But the amount of change is very small, and trigger sensor is only at the cam, so I think it less effect to trigger. I've checked cam gear and sensor position. Other changes are cam, valve spring, low-comp piston... Flywheel is same as previous one.

I followed your advice and did the test. The dwell table was set to 2.5 ms for the entire engine speed. As a result, a regularity appeares. Change the ignition timing, the dwell jump RPM also moves. PC Datalog - 2022-05-16 8;32;53 pm_dwelltest.llgx (ignition angle / dwell jump point) 10deg : 2750rpm 15deg : 2400rpm 20deg : 2150rpm 25deg : 1850rpm 30deg : 1650rpm

E07Z trigger mode.(https://forums.linkecu.com/topic/13923-trigger-setup-honda-3-cylinder-engine/) Especially, it has most error (over 30%) between 1800~2500 rpm, and +10~20% dwell time at higher rpm. At idling there is little error. Attach trigger scope. (Dwell time / Table) - 2300rpm ; +30% (4.3ms / 3.3ms)Trigger_2300rpm_4.3s-3.3s_TPS6.llgx - 4000rpm ; +13% (3.5ms / 3.1ms)Trigger_4000rpm_3.5s-3.1s.llgx - 1100rpm(idle) ; little(3.4ms / 3.4ms)Trigger_idle_3.4s-3.4s.llgx At least they are fine when I check 2weeks ago, but I'll check them again.

Dwell Time would be longer than the table, as if it were referring to a different table. At low rpm (1500 rpm), there seems to be fine. There are no triggering errors during the engine running. Attaching the base map and an ECU log (battery voltage and dwell time at 500 Hz). The point at which the voltage temporarily dropped was when the headlights were turned on. https://drive.google.com/drive/folders/1toBwNBD62UktU0rE0SGxvHmGBRLTxYdm?usp=sharing And I've done - Replaced battery and ignition coils ; nothing change. - Checked ignition timing with timing light ; no probrem This was not in the previous log. What has changed since then is that the engine was replaced. I've confirmed this in both Ver 6.21 and 6.22.

Check the voltage between A7/A8 and GND when power is on. If there are voltage, the wiring would be correct.

Is the driver type of AUX4 set to Low Side? Are the other AUX outputs (e.g. warning light) working properly?

1.現在表示している「燃料テーブル1」左上の「Unlock Settings View」を押し、ロック解除します。 2.ロック解除したビューを任意のセッティングビュー(Fuel Mainでも何でもよいです)に切り替え、再度ロックボタンを押します。 3.ECUセッティングタブから「燃料テーブル1」をクリックすると、新しく「燃料テーブル1」が表示されます。 　ビュー左上の「Switch to graphic view」を押して3D表示に切り替えます。 4.元々表示していた燃料テーブル1のロックを再度解除し、「Alt + ←」を押します。 これで、グリッドビューとグラフィックビューを並列して表示できるはずです。

Adamw, Vaughan, Thanks for your reply, I got it. I'll contact tech support.

EVO3X, but I use it for Honda.

4 terminal ISC stepper doesn't work. How can I check the operation by sending test pulses or any else? The stepper resistors (between AUX5-6, AUX7-8) are about 40 ohms. ECU hold power is not wired so Stepper Reset is set to Key-On. I have tried Bipolar Reverse, or swapping AUX7 and 8, but they never work.

Yes, this firmware works very fine I have tried over 10 times but the fault had never happened. As you said the first ignition is still delayed but nothing wrong, the engine starts up at 2 or 3rd sync. I did a test driving too, and it's also good. TriggerScopeLog_e07z-v62060.llgx

I attach the triggerscope and same time oscilloscope. (expand : around the first ignition) Thank you, 0521_trigger_e07z.llgx

Note : The first ignition pulse are delayed even when fuel is off. However it will be correct from the second ignition pulse. I suspect this much delayed ignition may be causing the timeout or fail.

Thanks for your quick responce. I tried the new firmware. It is improved a little but still doesn't work well. But there is a finding. The ignition works correctly when fuel is turned off. However, when fuel is turned on, the missfire has occured as before. And also ignition timing seems to be delayed significantly (nearly 60deg) at cranking so the starter sometimes makes a dull sound. After the engine starts, the ignition timing is almost correct. Settings are Trigger Offset : 0deg, Lock Ignition Timing : 10deg BTDC Is this may not the trigger pattern issue? (Ignition timing?) I thought advancing the ignition table during cranking might be effective, but I was afraid so didn't test it. I tested about 8 times, the engine started twice. When startup success :