Thread: New Toy - 1957 107" ute

OK, back to the drawing board, I found this video of it running in the 88", It may not be burnt valves after all.




Regards,
Tote

I'm a bit silly, rotor goes counterclockwise...... makes a difference to the plug lead wiring.

Regards,
Tote

I'm amazed it started!

Originally Posted by JDNSW

I'm amazed it started!

Got it running this afternoon, now to delve into the mysteries of Solex knock off carbies. It wont run at idle or much under 1500RPM unless the cold start is on. I've pulled the carby to bits , cleaned it and blown it out. Any ideas on which circuit isn't working?




Regards,
Tote

The issue is probably a vacuum leak, but could be incorrect idling mixture adjustment, or a blocked passage in the carburettor related to this. Barely possible is too low a float level.
Any leak in the manifold to head or manifold to carburettor, or the vacuum advance system will have a much greater effect at idling compared to running because there is a high vacuum, so more air is sucked in, and because there is only a small amount of mixture going to the engine, it doesn't take much extra air to really upset the mixture.
I hope this helps.

Some more troubleshooting this afternoon, dismantled and blew out the carb again, tightened the inlet manifold bolts and checked the timing. The engine now starts every time with no throttle and the cold start on. As soon as the cold start is closed it won't run at low revs and backfires through the carb. Aside from the high idle on the cold start you could drive it. There is scant information on these repro carbies anywhere unfortunately and they are a little bit different in that they don't have the speed jet assembly associated with the accelerator pump. I'm not sure if I have a dodgy carby or there is still an issue that I haven't addressed.


Regards,
Tote

Is there a vacuum tube between the carby and the dizzy? A bit hard to see with my failing eye sight.
.W.

Originally Posted by B.S.F.

Is there a vacuum tube between the carby and the dizzy? A bit hard to see with my failing eye sight.
.W.

Nope, the fitting is missing from the carb(which hardly inspires me with confidence) but I do have a bolt in the carb blocking the vacuum port.

Regards,
Tote