Back to recurring carb problem I've traced the problem to one carb and a very specific problem:
Background: 1.8 L in my 70'
Swapped my 36 dell's for 40's, rebuilt , rejetted, clean solid carbs.
Dizz: 050, pointless ign, timing ON, valves ON, compresion 160 on all 4.
PROBLeMO: <_<
EVERY TIME I hit 5400 RPM or a little above while car is running smooth great power no glitches,
when RPM's come back down and I'm driving just normally AFTER hitting mentioned engine speed (5400) I lose 1 cylinder and another runs badly.
Previously thought it could be dist and timing/dwell, switched distributors, same problem.
Traced it to #1/2 carb.
Pulled out the plugs that cover the air correction screws and adjusted- FIXED! BUT! it still does it, every time I hit 5400 I have to slow back down pull over and turn the air correction screw out 1-1/2 turns and drive for a while, then I can turn them back in and its fine.
Also, seems like a BUNCH more fuel being delivered from the 1/2 carb than 3/4. Plugs read the same but I can see a spray of fuel (not from injector nozzle!) out of the auxilliary venturi on 1/2 but not 3/4.
Anyone.. ..? J-Raby? Speek up or send me a 4900 rev limiter for an 050!!
TIA
Robert O