Cutting out for the first 10 minutes...

[Daverob73]

So, the bus is starting first time and running at idle. I wait on the drive for a few minutes.
Then I drive for 5-8 minutes and it cuts out when I stop at junctions.
I stop, wait a bit and carry on and it doesn't cut out anymore.

As it doesn't do it after a while, I guess it rules out a problem with a vacuum leak and the idle cut off valve. The idle jet is clear.

Does it take that long for a carb to warm up? Someone once told me they can ice up inside when you start the bus.

Would a better carb stop this?

Many thanks
Dave

 

[gvee]

Check your fuel filter. Similar issues to what I had with a blocked one.

 

[Daverob73]

Yes that's clear. Flushed the petrol tank too, so very little crap in it now.

 

[Johnny69]

What carb is it
- it sounds like it could be choke issue?

 

[Johnny69]

What carb is it
- it sounds like it could be a choke issue?

 

[Daverob73]

It's a 34 PICT 3.
Funny you say that I was reading about the choke last night.
I haven't adjusted it, maybe the coil inside needs turning to close the butterfly valve. Or it could be not working at all.
I'll have a look and do some checking when I warm it up.

 

[gilbo]

Mine has the reverse problem. Runs fine for 10 minutes or so and then starts to cut-0t. Anyone got any ideas?

 

[Trikky2]

Mine has the reverse problem. Runs fine for 10 minutes or so and then starts to cut-0t. Anyone got any ideas?

Have you checked the idle jet? Its on the outside right of the carb and can be removed and cleaned without any other dismantling. Its a very small drilling and tends to be the first to block if there's any dirt in the carb.

 

[dustrat]

Good advice Trikky2 . Solved my problems on a couple of occasions.
Robert

 

[gilbo]

Thanks guys - will give that a go.

Nick

 

[Daverob73]

Ok so it's sorted out. Turns out the carb wasn't up to the job. Got a new one fitted, bought it from Heritage (made in Brazil). Now it doesn't cut out at all.