35 replies to this topic

[Smiley]

Hello again.

I'm still at it. Trying to get this yoke to fire up!!

I have spark at all 4 spark plugs. (Just installed a new cap, rotor, leads and plugs to rule them out)

10.9v across the battery while cranking.

The issue seems to be a fuelling issue.

I have taken the carb apart, its all immaculately clean inside fitted at the parts from the newly acquired rebuild kit.

Set the float height in the bowl to 1mm below the height of the body when upside down. Set the jet height two turns below flush. (as per AC Dodd/DS3Shooter youtube tutorials.

If i take the dashpot off and blow through the overflow pipe the fuel squirts up out of the jet with ease.

My needle seems straight and piston moves freely.

If I blow through the overflow pipe while cranking it doesnt help it fire.

Where do people see my problem here? Is my needle getting jammed when i refit it?! Any other suggestions welcome.

Thank you again.

Smiley.

[Quinlan minor]

Will it start on Ether?

If so, points to fuelling problem.

[Smiley]

I haven't tried. Have been using carb cleaner in the past which had worked, but not anymore...

Edited by Smiley, 27 June 2025 - 12:05 PM.

[Smiley]

It's alive!!!!

I went and got some easy start as suggested. I hooked on the jump leads from another vehicle (engine running) and went at it. A few squirts of easy start and a whole heap of cranking, but she fired up!

The thing is: it cranked and cranked and cranked and gradually, rather reluctantly, it could be heard beginning to fire. After about 2 minutes of non stop cranking it got to the point where it sounded like it was running. I let off the key - it was running, well,let's say whimpering.....i gave it some throttle, played with the choke.....then when it warmed up a bit i adjusted the idle screw, took off the choke and had it idling quite nicely around 900RPM.

My question is this - why the really reallylong drawn out start up? Does that indicate anything? Do i have an underlying problem?

I knocked it off for 3 minutes. Tried it again and with a bit of hesitation at first, it started up again and idled.

Oil pressure is reading 60psi. (Thoughts on that?)

I have no temperature reading at the minute so for fear of boiling it, I have knocked it off for now.

Any tboughts these points?! Im not out of woods for sure but it is nice to hear it run again!

[cal844]

Sounds lean to me

[68+86auto]

Post some photos of the engine bay and carb on the engine.