[Black Soot and Back Fires]

Hi I have a problem with my series.

Landy starts pretty easily and when warmed up idles very nicely. It can drive downhill ok and can accelerate a little. Going up any kind of a slight incline there is no power whatsoever, and if I keep trying to go uphill it just dies. Sometimes it also backfires. When I check the spark plugs they are black with soot.

I have tried the following:

Compression test – all 125-140 psi, a little higher when oil is added

Adjusted tappets

Entirely new ignition system.

New genuine Lucas 45D distributor to replace the old 25D

Replaced condenser in this new distributor 3 times

Thoroughly filed, cleaned and gapped points

New plugs (2 sets), new wires

New coil, and then replaced that one with a known good coil from my Jaguar

Replaced old wiring from fuse box to coil and from coil to distributor

Adjusted ignition timing

Right on 6 deg BTDC at idle, advances (mark moves counter clockwise) when idle speed is increased

New vacuum line from carb to distributor

Entirely new fuel system

I rebuilt the Zenith 36IV with a genuine rebuild kit. Flattened all of the housings.

Replaced Zenith with brand new Weber

New fuel line from pump to carb and new filter (the filter does not fill up all the way, only a little less than half)

New fuel pump, inspected the old one which looked fine.

Removed fuel pickup line to check for clogs, all clear

Added 5 gallons of gas to tank to make sure I was not low

Fuel in glass sediment bowl is full and clean

New exhaust manifold (the old one was cracked by the down-pipe attachment)

New intake manifold gaskets and all new attachment hardware

Engine runs 50 psi oil pressure

Dynamo output seems fine, lights are bright and the battery does not run down.

Tightened fan belt.

Please can any one help?

Ali

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