Danny,
There is also the possibility of an obstruction in the fuel line from the tank to the lift pump. This could be as result of delamination of one of the rubber hoses, or a kink in the metal fuel line.

If there is a leak in one of the rubber fuel lines, you could be sucking air into the fuel delivery line. This will give a similar symptom to a clogged fuel filter, but would occur in most cases of high load, unless triggered by a tank vent issue..

If your tank vent is blocked, you could be having fuel starvation issues after a certain distance travelled. If you have this problem again, stop and loosen the fuel tank cap. Any sound of rushing air indicates that the tank vent is clogged. Check under the drivers side rear wheel well for a metal fuel line terminating in a rubber device. This is the tank vent. Clean the rubber device and run an old speedo cable thru the metal fuel line to check for and clear any obstructions.

__________________
Tony from West Oz.
Fatmobile 3 84 300D 295kkm Silver grey/Blue int. 2 tank WVO - Recipient of TurboDesel engine.
Josephine '82 300D 390kkm White/Palamino int.
Elizabeth '81 280E, sporting a '79 300D engine.
Lucille '87 W124 300D non-turbo 6 cylinder OM603, Pearl Grey with light grey interior


Various parts cars including 280E, 230C & 300D in various states of disassembly.