R51/3 - engine won't start after carbs cleaning
Posted: Tue Dec 21, 2021 5:48 am
While I wait for the new fuel tank to arrive in mid-January (there's a post here regarding this issue), I have once again finished patching the old one with tin solder, and there seems to be no leakage in so far.
So I went and assembled it and tried to get the engine run.
What I get is right side run after lots and lots of kicking and then it dies (exhaust gets extremally hot there, while only warm on the left). Seems that left is not working, though exhaust gets a bit warm there.
Further start attempts as part of the morning gymnastics are answered with a heavy backfire on the right. Can no longer start the engine. Took the spark plugs out: they where wet. Dried and ventilated the cylinders. Still no success.
When the engine was working, opening the throttle beyond the low-medium rpm responded with choking engine.
Carbs where cleaned.
They get fuel.
Stop screws on carbs where rotated in 2 turns after touching the sliders.
Pilot screws where tightened slightly and turned back 2 turns.
There are sparks from the new PowerDynamo system and valve clearance was checked 3 times.
Any ideas? My leg hurts.
EDIT:
After further thought, could it be that the needle is not at the right height?
I attach pictures. How can I know the required height? The carbs were purchased as new at Mark Huggett, and are 24mm type (the originals were shot).
So I went and assembled it and tried to get the engine run.
What I get is right side run after lots and lots of kicking and then it dies (exhaust gets extremally hot there, while only warm on the left). Seems that left is not working, though exhaust gets a bit warm there.
Further start attempts as part of the morning gymnastics are answered with a heavy backfire on the right. Can no longer start the engine. Took the spark plugs out: they where wet. Dried and ventilated the cylinders. Still no success.
When the engine was working, opening the throttle beyond the low-medium rpm responded with choking engine.
Carbs where cleaned.
They get fuel.
Stop screws on carbs where rotated in 2 turns after touching the sliders.
Pilot screws where tightened slightly and turned back 2 turns.
There are sparks from the new PowerDynamo system and valve clearance was checked 3 times.
Any ideas? My leg hurts.
EDIT:
After further thought, could it be that the needle is not at the right height?
I attach pictures. How can I know the required height? The carbs were purchased as new at Mark Huggett, and are 24mm type (the originals were shot).