Tb42 duel fuel carby issues

[dom14]

Hi Dom,

I suspect the IMPCO 300a has a power valve built in see item 3

http://www.teecoproducts.com/Catalog...A%20Series.pdf

If you are using a ring mixer - then you need a power valve

Hi mate,
Yes, it has both WOT and idle mixture valve adjustments. But, apparently not a good idea to try tuning it without an air/fuel mixture analyzer or O2 sensor gauge. I thought about trying it the old school carby tuning method of by ear. I haven't touched it yet. I need open up the mixer first and look for any diaphragm damage. After that, I'll get to the tuning it and see whether it needs tuning at all. Perhaps, it's better not to fix it if it ain't broken.