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86129squids
| | Posted on Thursday, July 17, 2008 - 12:50 pm: | 
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Hey folks- I just spoke with Vern (Etennuly) and he's about to abort a good trip on his Uly. Below is the situation as described:
Between 55-85 mph, the bike goes into run/skip mode, with "a red light" flashing in the dash. (He didn't say exactly which red light, come to think of it.) If he abruptly rolls off the throttle for about 10 seconds, the bike will resume running normally. Then after a few more miles the run skip returns. Vern sez that the bike is far from overheating, so the run/skip doesn't make sense.
What would be a quick fix? Seems the head temperature sensor wouldn't revert to normal from fault after just 10 seconds of off- throttle, and I can't think of anything in the intake path that would cause this. His exhaust servo is working right- Vern was wondering if the oil pump might be causing trouble, triggering the oil pressure switch intermittently.
If anyone has some input, speak up- hopefully the proper tweak would get the bike to act right. Vern will be back at his house about an hour from this post- maybe by then we can help a brother out.
Thanks in advance, y'ouns!!!
UPDATE: Vern made it back to the house, and called to tell me this:
Vern changed his oil: Used a top shelf Fram oil filter and changed to Mobil V-Twin oil. (He had been running 60 weight oil with a stock Buell filter.) Interstate 75 thru Lake City North is uphill, where he was having the trouble- after he headed back home (downhill) he had no trouble at all.
Could the Fram filter be that restrictive? Could the Buell motor just be more happy with the old recipe oil and filter change? He's in the process of changing back to stock filter and 60 weight as I write this. Let's hope this does the trick...
(Message edited by 86129squids on July 17, 2008)
Yet Another Update:
Vern's back on the road with 60 weight and a new stock filter. Said he's ran the pizz out of it to the point of the first episode last time, and it's running fine. Heading to a park just below Indianapolis to fix his wife's Denali which shat a wheel bearing.
Could a change in oiling or a more restrictive filter have caused it?
Good that he's rolling again anyway...
(Message edited by 86129squids on July 17, 2008) |
Jsimpkins
| | Posted on Friday, July 18, 2008 - 02:18 pm: |
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Check the cylinder head temp sensor. I used to have the same issue, it would indicate from 32F to 500F back and forth. Turned out to be a chaffed wire and bad sensor.
j- |
Bombardier
| | Posted on Tuesday, July 22, 2008 - 02:02 am: |
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Why did you go to the 60 weight oil?
It will make the engine work harder with the thicker oil. |
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Troubleshooting (Poor Starting/Running/Handling/Ride Issues) »
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7/17/08 Hollerout to help Vern!!! Run/skip at speed...