[V1tara]

Hi guys i have a carby swb vit (auto) Starts and goes fine untill i reach 2k in revs, then starts to die. it seems like its choking and wont go faster When i take my foot of the accelerator it will die.

Can rev past 2k when not in gear

[Gwagensteve]

Sounds like faulty vacuum advance to me.

[V1tara]

Gwagensteve wrote:

Sounds like faulty vacuum advance to me.

Just done a google check, as im not sure what a "Vacuum Advance" is. So im guessing its on the carb? and is it service able (carby kit) or A part im able to buy?.

Also where is the vacuum advance on the vit?

[Gwagensteve]

No, vacuum advance is on your distributor and advances ignition timing as load increases on the motor. It will give the symptoms you're complaining of if ts not operating.

Its possible your also have a problem with your secondaries on the carb, but under light throttle the car should still rev out under light load.

In truth it could be a number of things or a number of things combined. I just suggested the most probable cause from what was described.

Steve b

[V1tara]

Gwagensteve wrote:

No, vacuum advance is on your distributor and advances ignition timing as load increases on the motor. It will give the symptoms you're complaining of if ts not operating.

Its possible your also have a problem with your secondaries on the carb, but under light throttle the car should still rev out under light load.

In truth it could be a number of things or a number of things combined. I just suggested the most probable cause from what was described.

Steve b

Hi Steve iv just taken the vacuum advance off, is there a way to check it its not working properly? iv pushed the shaft up and held the hose connection bit to see if it holds the shaft up...and it doesn't, also when blowing down where the hose connects i suspect an air leak as i can hear one when blowing.

[MrRocky]

I reckon timing belt slipped a tooth on the cam

[cairns27]

Can ya just suck on the hose and the vacuum thingy will move..simple things first.

bye

[V1tara]

hi guys fixed the problem....i think the carby was leaking water into the engine causing issues when revs increase. when the engine was off and the airbox off of the carby i could hear a tis tis like water hiting a hot surface. Wont really know untill i take the carby apart.

anyway replace the advance vac which done nothen i then got a 2nd hand carby and that worked perfect.

from the drive around town seems like everything is solved.

thanks again for the help guys.

[V1tara]

Also replace thermostat and everything is super cool!