Hi Kevin,
> Frans, My engine symptoms were not constant. Only at high power.
Mine are not even constant at high power. Only temporary. After a few
seconds the engine runs fine at full power, even at altitude.
> Your
> symptoms sound similar. Momentary drop in fuel differential pressure.
Ok, this momentary drop in fuel pressure is interesting and sounds
similar indeed.
> I only changed the float bowl gaskets and that fixed it.
All right. I'm about to take the carbs out for examination anyway, so I
will replace the float bowl gaskets and see what that does for me.
> Could be when the turbo pressure goes up, the fuel pressure leaks out
> of a carb bowl gasket.
Yes, but why only temporary? This is what nags me. You may be right
about the gaskets, I will try it, but I also like to understand what is
happening and why it is happening the way it is.
> In the Rotax classes I took (Rotech in Canada who also run
> Rotax-owner.com) they emphasized always suspecting and ruling out
> carburetor problems first. They also told us that the cork gaskets
> are better than the paper ones. Bob Borger sent an eBay link a while
> back for nitrile gaskets. I bought a pair but have not installed
> them.
If I remember correctly I have the cork gaskets. I will replace them
with nitrile gaskets if I can get them.
Thanks,
Frans
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