Hesitancy when first driving away from hot start

[uzbek]

Have noticed that when the car starts from hot (within perhaps 30 mins of stopping or less) although it starts just fine and revs nicely at rest the first 100yds or so it pulls hesitantly as if there is a fuelling problem. After that it just pulls cleanly again until the next time. No problems when starting from cold.

The car has standard Strombergs and electronic ignition.

Any ideas?

Bruce

[davidf]

Does it do it at any other time? I have been having similar problems, except that mine also 'misses' when accelerating lightly after running on a light throttle.

See this thread http://socforum.com/forum/showthread...ire-under-load

[milothedog]

Have noticed that when the car starts from hot (within perhaps 30 mins of stopping or less) although it starts just fine and revs nicely at rest the first 100yds or so it pulls hesitantly as if there is a fuelling problem. After that it just pulls cleanly again until the next time. No problems when starting from cold.

The car has standard Strombergs and electronic ignition.

Any ideas?

Bruce

Maybe down to the habit the Stag has of dumping loads of fuel in the inlet manifold. that initial start up and drive just burns it off

Ian.

[nigele]

Mine used to do this until I cleaned and reset the temperature compensators on the Strombergs, and refitted with new seals as per the Buckeye Triumphs instructions. Since then I haven't had the problem.

Nigel

[uzbek]

It runs totally smoothly at all other times.

I think there is a bit of a petrol smell when it misses so it may well be as Ian says.

Bruce

[Staggard]

I tend to agree with Ian, running rich on hot start up. I had a similar problem until I fitted a relief valve in the fuel line.

[Ian F]

Bruce

I had same issue after hot restart after 30-45 minutes and following different views ( either coil overheating for fuel issue as referred to by Ian) I pursued the fuel route.

I fitted new needle jets and carefully re-set the float heights, fitted stainless braided fuel lines under the bonnet and it cured it. Go for the carbs every time.

Ian F

[uzbek]

I tend to agree with Ian, running rich on hot start up. I had a similar problem until I fitted a relief valve in the fuel line.

Can you explain a bit more what you used and how this is done?
Not a job I would know how to begin

Bruce

[Staggard]

Can you explain a bit more what you used and how this is done?
Not a job I would know how to begin

Bruce

My set up is a bit complicated, first you should follow Nigel's/Ian's advice and make sure your carbs are set up correctly, float hights , temp compensator, ect if you find you still have a problem fit a T piece in the fuel line after the pump and connect it to the return in to the top of the tank with a very small restrictor built into the return fuel line. This way when you turn off your engine/fuel pump the fuel line pressure is realised back into the tank thus relieving fuel pressure against the needle valves. Other members have been successful with this method . Graham

[Klaus Schlueter]

...... if you find you still have a problem fit a T piece in the fuel line after the pump and connect it to the return in to the top of the tank with a very small restrictor built into the return fuel line. This way when you turn off your engine/fuel pump the fuel line pressure is realised back into the tank thus relieving fuel pressure against the needle valves. Other members have been successful with this method . Graham[/QUOTE]

Some pictures from my installation which is running now successfully since 4 years and solved the problem you described in post #1. Restrictor diameter is appr. o,5 mm with a little fuel filter in the hose to the restrictor.

Klaus

Pic 1 Ball valve.jpgPic 2 Drossel am Tank.JPG Pic 3 Drossel 0,5 mm.JPG