Originally Posted by sdanville
That is excellent news.
Congratulations on the best buy on an ECU in the History of Triumph Motorcycles.
Not so much.
I didn't like the 4 setting, so I stopped and changed it to 7 (the correct setting for my bike) after a couple of blocks. Ran okay, just didn't seem right somehow. I trust my feelings, so I changed it.
She ran beautifully! Idle was rock-steady at 1400, the engine was quieter (I kid you not) noticeably smoother and more responsive from idle to 8000. I didn't rev her past 8K because there wasn't room. It even seemed to correct what I thought was a float problem- no idling down to a stall at red lights.
10 miles into the ride, she lost power and died on the highway.
Pulled over, noticed I had lost the neutral light.
Swapped the old ECU back in, she fired right up. Hurray, headed home.
2 miles from home, she died again. I suspect a blown motor, I'll know more in the morning.
Symptoms- Lost power, when I hit the clutch the motor stopped dead. Wouldn't turn over on the starter. Sounded hydro-locked but smelled strongly of oil. No smoke. WOT and hit the starter and she grudgingly turned over.
Let her sit for 45 minutes until my boss got there with his truck. Managed to get her started, and she ran okay for about half a mile, and then I lost power again and things started ticking in the top end. I held the tach at 4K and she kept running - so I ran redlights and stopsigns the mile and a half home, got into my apartment complex, and as soon as I hit the clutch the motor stopped dead. 4000 RPM to 0 instantly. Coasted to my parking spot and told my boss that I was calling in a pedestrian so I could either diagnose the bike, buy a cheap car (today was payday, thank God) or both.
I have NO idea what's wrong. I didn't run her any harder with the new ECU than I do every day. Not as hard, probably.
I'm going to pull the valve cover tonight or tomorrow morning and see if the timing chain is okay, pull an oil sample to check for metal in the oil, and see if I can borrow a bore-scope from someone to check the pistons/sleeves.
She sounds sick unto death. I am not all that hopeful.
On the bright side, if the motor is hosed, I have a perfect excuse to put in those 955i internals and cams I have been wanting to do anyway. We can rebuild her, make her faster- stronger. Better.
If you have one of those ECUs and haven't fitted it yet... DON'T!