- Jan 4, 2011
- Reaction score
Has anyone had experience with a Lunkenheimer mixer? I have two Breisch Olds engines with this mixer/carburetor. One my dad built in 1981 and one I built in 2005. The one my dad built has always started easily but I just got out the one that I built and I am having trouble with keeping it running. It starts but only runs for about 10-15 seconds and then runs out of fuel and quits. I am sure that it is related to the mixer. Compression and spark is good. I have tried lapping the valve seat, tried different springs and even made new fittings but nothing changes. I am not sure what I should be looking for. The needle valve adjustment is extremely fussy. 1/32 of a turn makes a difference between starting or not starting. Any experience?