Hi all
Does anybody know what causes the rev to not drop as quick as they should? When I blip the throttle it’s sometimes slow to come back down to idle !
Any help would be much appreciated.(1979z1000st)

This is the reply from the guy doing the carbs That is for the top part of the float bowls Their are 4 one on each float bowl You have these that is not a problem The forum is not understanding you It’s the part that is built Ito the float bowl where the fuel is sucked up by the diaphragm Not where ...

Hi Steve No that’s not the part You have al them It’s the check valve in the lower section of no 2 float bowl It’s a blank off to stop the fuel from the pump running back to the float bowl It’s not available as a separate item it comes complete with the float bowl This is the reply from the guy sort...

I think that may be the part , where in the world is that ?

Hi all So Oz At Z parts has had a look at the carbs and has noticed on the no2 carb with the pumper on there is a bit missing inside the float bowl ! This is the no two float bowl Where you can see the hole This should have a black off to stop fuel blow back from the pump diaphragm , il post a pic b...

Checked all connections , nothing amiss, I can’t have shorted something out could I ? I was getting spark before I swapped them over ! I’m at a loss mate !

Hi warren
I swapped the two wires on the same coil not coil to coil does that make a difference ? Now that I have swapped them back there is no spark from that coil ?

Well just swapped the wires on the coil that does 2and 3 because it looked that it was wrong according to a wiring diagram and now I have no spark on these cylinders at all ! Tried a new coil on that side and still nothing ! Would I have blown a fuse? It’s firing on 1&4 still

Another thought !
If the low tension connections to the coils were the wrong way round would this cause the back firing etc ??

:sad :oops: Hi all , brief update I have taken the carbs off and cleaned the idle jets and main jets and blown them through ! I have pet sealed the tank , but can’t put any fuel in for seven days , so I have started the bike with a funnel connected to the fuel line , it started but was coughing and ...

Does anybody know what the accelerator pump does on carb no2 ? Apparently on US models z1000st , when I look at carb rebuild kits it says not suitable for these carbs ??

Thanks guys for all your feed back , I have ordered some pet seal for the tank , then I’m going to look at removing the carbs and see what I find!!!

Hi everyone , just joined and need advice please? I have recently bought a79 z1000st American import. Although somebody has spent a lot of money restoring the bike it just won’t run right ! It won’t fire on all of the cylinders all of the time ,and it’s not always the same cylinder that has a colder...