Onder
VIP MEMBER
- Joined
- May 11, 2010
- Messages
- 4,120
Bolted up my T150v after overhaul. All stock but for the 850 cylinders. I've assembled several over the years so no surprises.
Well not this time: When I attempted to torch it off, I got instand pooping like you would hear with a car with a blown exhaust
gasket. All three cylinders get hot exhaust pipe. Never ran it for more than 10 seconds. It seems to be blowing back through
the carbs. One plug is clean one is mildly rich and one is black. Ten seconds! Have carefully checked static timing (TriSpark
remote black box type) on each cylinder. Carbs stripped and cleaned free passage in all the tiny ports. Valves lashed a thou
loose. Valve timing per marks. Did a bypass compression test all cylinders are 77/80 with only the faintest his in the intakes with
the carbs removed.
The bike ran flawlessly before I pulled it down, it just leaked at the cases. Of course I found the centre mains unhappy so
they were replaced.
But I am puzzled. What on earth is going on?
Well not this time: When I attempted to torch it off, I got instand pooping like you would hear with a car with a blown exhaust
gasket. All three cylinders get hot exhaust pipe. Never ran it for more than 10 seconds. It seems to be blowing back through
the carbs. One plug is clean one is mildly rich and one is black. Ten seconds! Have carefully checked static timing (TriSpark
remote black box type) on each cylinder. Carbs stripped and cleaned free passage in all the tiny ports. Valves lashed a thou
loose. Valve timing per marks. Did a bypass compression test all cylinders are 77/80 with only the faintest his in the intakes with
the carbs removed.
The bike ran flawlessly before I pulled it down, it just leaked at the cases. Of course I found the centre mains unhappy so
they were replaced.
But I am puzzled. What on earth is going on?