Engine bogs down

[bingo808]

Hi
Well, I think I balanced the carbies. Not 100% confident.

Today I fired up the beast and it idled a bit low after about a minute. Tried to up the idle. All this does is push on the throttle plate, right?

New problem. After I adjusted the idle, the motor would bog down on opening the throttle. Like really bog down. Then I let the throttle go and it idles for a bit then conks out.

Is there a idle mixture screw for these motors? This "bogging down" happens after 1-2 minutes of running. Motor gets barely warm.

[tony.mon]

Got the petrol tap vac line on the sideways pointing spigot or straight down?
The straight down one is a drain, nothing should be connected there.

[sirch345]

Got the petrol tap vac line on the sideways pointing spigot or straight down?
The straight down one is a drain, nothing should be connected there.

Funny you should mention that, I was thinking exactly the same thing,

Chris.

[MacV2]

Got the petrol tap vac line on the sideways pointing spigot or straight down?
The straight down one is a drain, nothing should be connected there.

Funny you should mention that, I was thinking exactly the same thing,

Chris.

It wouldn't cause bogging down as it just wouldnt run after any fule in the carbs run out...

Probably after about one & a half Thumps...

[bingo808]

Got the petrol tap vac line on the sideways pointing spigot or straight down?
The straight down one is a drain, nothing should be connected there.

Yes, I'm sure I have the vacuum line connected to the sideways spigot. All good there.

[8541Hawk]

Have you tried opening the fuel cap to see if the issue goes away as it sounds like the tank vent is blocked.

[bingo808]

Have you tried opening the fuel cap to see if the issue goes away as it sounds like the tank vent is blocked.

No, I haven't tried that. Thanks will do.