4k motor won’t run!!

[Callumm]

Hi all, just been having problems with my ke70, not long ago the motor was rebuilt bottom to top and has done about 1000kms since and all has been well and i’ve put a side-draft weber 45dcoe on it.

recently got defected and i let the car sit for a few weeks and it’s still started fine, then one day just wouldn’t turn back on and since then i’ve taken the carby off cleaned it out new jets in it, checked all the valve clearances, replaced the fuel pump, new points, new ignition coil, new spark plugs and it’s just does not want to run it’s getting spark and fuel and is cranking over and trying to fire but just won’t kick over, any ideas much appreciated.

[altezzaclub]

Is the choke hooked up?? If not, have someone hold it shut while you try to start it. If it starts, put a cable on it.

How is the float level in the Weber? With the top off the fuel should be blah blah....  something mm below the top edge, but its decades since I had to do it.

While it is off, hold the top of the carb vertical and when the float just touches the needle the clearance should be...  blah blah blah.. use a drill bit to measure it.

One is 11mm, I can't remember which.

Anyway, its that fuel level that determines how much fuel goes through the jets.

So long as you have seen a spark at a spark plug sitting on the head and checked the timing with a timing light, it has to be in the carb.