Hesitation and difficult start when warm

[RobH]

Van runs and starts fine when started from cold, but if I start it after a short stop, say 5 to 10 minutes it's difficult to start and runs poorly very hesitant and almost dies on pulling out, which is obviously a concern.

Any ideas what could be causing it, oil level fine although it does use a bit, coolant fine, fresh full tank of petrol, 1.9 DG with pierberg 2e3 carb.

[kevtherev]

The information you supplied suggests a weak mixture when the engine is warm
Does it pop and fart on the overrun?

if it does then a check should me made for air leaks.

other than that change the filter, and clean out the carb.

[RobH]

Not entirely sure what you mean, but don't think so, once it gets past the has situation and kicks on smells a bit petrolly like it didn't all burn properly, going for not shortly so I'll get garage to take a look.