rover 3.5 with webber sudden loss of power

[foxyjam]

Hi all

I've just got a land rover series II fitted with a 3.5V8 with a single Webber Carb.

Spoke to a garage that use to look after the car and they say it's never had any probs like this before so I think it's old components reaching end of life.....

Engine runs great when cold but when warms up it suddenly dies, loses power as if it's either over fuelled or total lack of fuel.

If left to idle at this stage it sounds ok, but when gentle increasing throttle, sounds like it's down a cylinder.

When driving like this I can't give much more than idle speed on the throttle without it just dying. So can only do about 35mph in 4th.

When left to cool, it's back to being perfect.

There is a strong smell of fuel when all this happens, although i'm suspecting a problem with the ignition system but no idea what's on it!

It's running with a Kenlow on thermostatic switch and this works fine so never gets over hot.

Please can anyone give me any ideas??

[sidecar]

I presume that by 'single Weber' you mean the Edelbrock/Carter/Weber 500 AFB carb, if so so you know what jets and rods are fitted to the carb?

The standard setup is 86 primaries, 65-52 rods 95 secondaries.

The above setup has always been way too rich on every 3.5 lump that I've worked on.

Do you know what the fuel pressure is?

[Darkspeed]

Sounds electrical - not running an "Opeless" is it

Andrew

[shaunod]

Certainly sounds like the dissy to me. If it is a dlm8 the I would say the amplifier pack has had enough .. they usually have display failure at temperature, or could even be the coil breaking down as it gets hot.
As Darkspeed said .. if its an 'Opeless' dissy then ask no more .. 90% chance it is that not working. There are issues with the Weber 500 carbs getting too hot and the float valves sticking closed .. but generally that is when the engine is really hot .. I would not have expected that at this time of year.