From:Carl Henrik Stormer
Subject:RE: RE: Zenith T4X carburettor for DeLuxe 1927/28 Date:Mon Jul 14 10:32:23 2014
Response to:5254


My Henderson is now fully overhauled, and the engine and gearbox is for
all practical purposes totally new, rebuilt by Jörgen Sundberg in Sweden
(Grevbo Engineering). O still have problems with the carburettor though -
hesitation when it comes off the idle (pilot) jet - a hole in the middle. I have
tried all sorts of solutions without success - new main jet (size 20) and new
compensator jet. The carb has been modified somewhat by an earlier
owner, and I suspect that perhaps the idle jet mechanism is not functioning
properly, or the choke tube (new) is too large.
I am now looking for a spare carburettor in good condition, or somebody
qualified and willing to overhaul mine to original specifications.
Is there help to be found somewhere?

Did you find a solution to your hesitation problem?

Hi Dan,

No solution yet. The symptoms are classical for a too wide choke tube (venturi), but there are several parameters involved which may influence the result. Dave Molnar has offered to try to find a solution, and will test the carb on his '28 DeLuxe. I am still optimistic!