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  1. flx

    Carb issue. Fuel bypassing or leaking

    So the issue is only while decelerating you feel pulled by the engine / no engine braking ? It's hard to estimate what you feel compared to a regular situation on this. That could sound as the TP activating (should activate only over 10mph) but if engine off you unscrewed the TP screw so it does...
  2. flx

    Carb issue. Fuel bypassing or leaking

    I'm not sure to understand the issue? So with the idle speed screw you were able to set the idle at 700rpm and the engine runes fine at this speed? But after driving when you are decelerating you don't feel engine braking and to the opposite you feel pulled by the engine while you try to brake...
  3. flx

    Carb issue. Fuel bypassing or leaking

    Now if your valve is bypassed and the TP is pulled not in front of the little plate. Or you have unscrewed the TP screw so much that it can't touch the plate it should not do anything to your idle speed. If I understood correctly your issue you have a high idle all the time so th engine is...
  4. flx

    Carb issue. Fuel bypassing or leaking

    Throttle Positioner = TP Choke Breaker = CB Both the TP and CB are connected to the same diaphragm. In countries with only the CB this diaphragm is directly connected to the base of the carb. In countries with the TP you have a valve on the vacuum line that the emission computer can control...
  5. flx

    Carb issue. Fuel bypassing or leaking

    If no high-iso is engaged, what is happening if you try to turn the idle speed screw? Can you lower your idle speed like that? Does it stall or run rough when lowering it? If your carb was only dumping fuel in the intake with no extra air I think it would flood the engine. While desmogging did...
  6. flx

    Carb issue. Fuel bypassing or leaking

    This diaphragm itself is not related to smog. A valve inline of the hose between the base of the carb and the diaphragm is for emissions but you can still connect the vacuum hose directly bypassing the valve. This diaphragm also control the Choke Breaker that reopen slightly your choke after...
  7. flx

    Carb issue. Fuel bypassing or leaking

    Throttle Positionner that stays engaged? Check that just after you start the engine the diaphragm on the back side of the carb pulls the 2 metal rods connected to it.
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