Dodgy bocar 34pict3 carb!

[lard]

sounds to me like youve got an air leak it doesnt always show when you go up the rev range i would get a can of wd 40 [ive always used easy start,but not everyone is comfortable with spraying it around the engine bay] and spray around the usual suspects inlet manifold gaskets, rubber manifold connection pipes ,carb manifold gasket,if the revs go up or it starts spluttering/dying then bingo youve found it this is best done on tickover if youve swapped carbs for one you knows is working then it cant really be jet sizes... :mrgreen:

Just to note the test carb came jetted as is from JK - was working on mine (but then my bus might have a tolerance for incorrectly setup parts )

 

[geenjay]

sounds to me like youve got an air leak it doesnt always show when you go up the rev range i would get a can of wd 40 [ive always used easy start,but not everyone is comfortable with spraying it around the engine bay] and spray around the usual suspects inlet manifold gaskets, rubber manifold connection pipes ,carb manifold gasket,if the revs go up or it starts spluttering/dying then bingo youve found it this is best done on tickover if youve swapped carbs for one you knows is working then it cant really be jet sizes... :mrgreen:

Just to note the test carb came jetted as is from JK - was working on mine (but then my bus might have a tolerance for incorrectly setup parts )

:mrgreen: my van was built from incorectly setup parts :lol: :lol:

 

[strutt]

Think we may have actually sorted it.......for now :lol:
I upped the idle jet to 60 which seemed to work wonders!

I did have a good search around for any air leaks, theres a lovely film of wd40 everywhere now, and tbh i cant find one anywhere!!!!
Another problem i noticed which i havent quite bottomed out is my throttle lever is sticking open when i attach the accelerator cable. (this could be something todo with butterfly valve shaft, although seemed to close well without cable),

So i now have a van that drives smoothly and idles, (although a bit too high if it sticks open!) confidnece is building again.....

Lard - Would i be able to keep the carb just for a couple more weeks until i am satisfied mine is all ok? :roll:

 

[lard]

Think we may have actually sorted it.......for now :lol:
I upped the idle jet to 60 which seemed to work wonders!

I did have a good search around for any air leaks, theres a lovely film of wd40 everywhere now, and tbh i cant find one anywhere!!!!
Another problem i noticed which i havent quite bottomed out is my throttle lever is sticking open when i attach the accelerator cable. (this could be something todo with butterfly valve shaft, although seemed to close well without cable),

So i now have a van that drives smoothly and idles, (although a bit too high if it sticks open!) confidnece is building again.....

Lard - Would i be able to keep the carb just for a couple more weeks until i am satisfied mine is all ok? :roll:

Hi - that's great to hear! - no problem keeping hold of it for a while, was my spare before I went twin carbs so no worries