1300 cc crossflow with twin dellorto 40s.
went out for a drive last night on some hilly roads, and on 2 occassions, slowing down before a T junction on a steep hill with very bumpy road
surface the engine stalled. 
Not had that happen before - tank over 1/2 full - started immediatley afterwards.
Very strange - anyone want to hazard a guess as to why this should have happened?
The very bumpy road and slope affecting the carbs in some way?
Keeping a open mind, could it be something like a coil wire dancing about on its terminal? Or a fuse that has a bad connection.
Steve.
Have you used thackeray washers on the dellortos?
quote:
Originally posted by iank
Have you used thackeray washers on the dellortos?
I had the same thing a couple of times on my 2.0 Pinto with standard weber 32/36 carb when braking really hard for a junction. Haven't been able
to work out what caused it, but it hasn't happened for a while now.
I thought it might be momentary fuel starvation due to inertia? not sure how where though
I had this exact same problem with my last carburetted tintop - turned out to be a split in the petrol pump diaphragm.
Check the fuel pump is still able to lift fuel when driving up a hill - mine wasn't
My buggy and the bluebirds do this when subjected to very bumpy ground. I think its the poor float being beaten to death and the carbs over filling
and pouring fuel down the carb bore and flooding the engine. The way I get round it is to keep it in a low gear so the engine processes more air and
keeps drier inside. That or not drive so fast! 
quote:
Originally posted by Mr Whippy
My buggy and the bluebirds do this when subjected to very bumpy ground. I think its the poor float being beaten to death and the carbs over filling and pouring fuel down the carb bore and flooding the engine. The way I get round it is to keep it in a low gear so the engine processes more air and keeps drier inside. That or not drive so fast!
Aha! Carbs..... Don't you just love them...
Fragile things which need adjusting with the subtlety of a Swiss watch maker, effected by vibrations, temperature, g-forces and just about any other
force exerted on them when attached to a car engine....
I'm still getting mine Dynojetted this Monday- but the end solution is to put them in the bin and go EFi!!!!!
quote:
Originally posted by BenB
Aha! Carbs..... Don't you just love them...
Fragile things which need adjusting with the subtlety of a Swiss watch maker, effected by vibrations, temperature, g-forces and just about any other force exerted on them when attached to a car engine....
/quote]
you forgot the spec of dirt that brings the car to a stop in the middle of the motorway
mcerd1 - 17/4/07 at 02:51 PMquote:
Originally posted by Mr Whippy
or fill the float bowls with fuel tank foam as per the mod in Vizards pinto book
Anyone ever heard of anyone using this mod ?
Re: Vizard mod,
Float is removed, and a scavenge pipe is mounted vertically in the float chamber, coming out of the bottom via a gland. Height of pipe within float
chamber determines fuel level. Main fuel pump pumps all the time, a second high flow fuel pump on the scavenge side keeps level from going over the
top of the pipe.
The float chamber is foamed to keep the level as stable as possible and reduce fuel foaming.
