MaxxBeard

MaxxBeard

New Member
Hi everyone I have a series 3 2.25 diesel 1976. I fully rebuilt engine last year. I also fitted new lift pump and had the injectors and distribution pump refurbished. It’s been running great until the last couple of weeks. The problem I have is when I’m driving up steep long hills or on dual carriage ways for more than 3-4 minutes the engine starts to lose power as if it running out of fuel. If I come of the accelerator the engine dies but if I’m quick enough I can bump start it and if I drive slower it seems ok. Has anyone had fuel starvation problems before if so what was the fix. Many thanks.
 
MaxxBeard said:
Hi everyone I have a series 3 2.25 diesel 1976. I fully rebuilt engine last year. I also fitted new lift pump and had the injectors and distribution pump refurbished. It’s been running great until the last couple of weeks. The problem I have is when I’m driving up steep long hills or on dual carriage ways for more than 3-4 minutes the engine starts to lose power as if it running out of fuel. If I come of the accelerator the engine dies but if I’m quick enough I can bump start it and if I drive slower it seems ok. Has anyone had fuel starvation problems before if so what was the fix. Many thanks.
Click to expand...

Have you still got the original vac flap on the intake pipe?
Have you checked/changed the fuel filter?
Taken a look at the fuel itself?
 
Hi yes still has the original flap. Not sure about fuel in tank, I did fill to brim and took it for a drive and still the same problem. I’ve changed fuel filter all was clean there.
 
MaxxBeard said:
Hi yes still has the original flap. Not sure about fuel in tank, I did fill to brim and took it for a drive and still the same problem. I’ve changed fuel filter all was clean there.
Click to expand...


Maybe try and tie the flap open as a test?

Believe it or not the scania tucks have the same flap idea though for different reasons, and when it starts to seize up it does the same as your car is doing, though the new scania part is 1k plus!
 
MaxxBeard said:
Hi everyone I have a series 3 2.25 diesel 1976. I fully rebuilt engine last year. I also fitted new lift pump and had the injectors and distribution pump refurbished. It’s been running great until the last couple of weeks. The problem I have is when I’m driving up steep long hills or on dual carriage ways for more than 3-4 minutes the engine starts to lose power as if it running out of fuel. If I come of the accelerator the engine dies but if I’m quick enough I can bump start it and if I drive slower it seems ok. Has anyone had fuel starvation problems before if so what was the fix. Many thanks.
Click to expand...
Filter change never does any harm, and can do some good.

Also, if it is very cold where you are, don't rule out problems with diesel waxing. It still happens, even though additives are better now.
 
Have a look at the stack pipe in the tank for pin holes as if the tank has been used to running on low fuel then you have filled the tank the pin holes could be in the top half of the stack pipe so when going up hills its sucking in air ;)
 
I’d try it with the fuel cap off first. They typically don’t seal that well but if there isn’t a vent hole working it could be as simple as a vacuum developing in the tank.
 
As somebody else said.....waxing of diesel used to be a prob....ans seeing deisel can now be coming from ropy sources cos of the ukrain war maybe its aint got the winter anti wax additive in it.....were do you buy your derv.....not cheap stuff is it.

A dodge to stop waxing used to be stick a bit of petrol in with the diesel..cannot remember the mix....maybe 10%.

The other thing that springs to mind....there is a fine gauze filter just behind the fuel inlet into the injector pump.....if that part blocked that could do it....

What about your lift pump....how is that....several things can go wrong with that including one of the small one way valves sticking....look at stacxk pipe filter as well....maybe bunged up.

Not sure its been cold enough to wax diesel....unless you up north of the border..but the other old dodge was to go over the fuel lines with a blow lamp....and the filter body to melt the ice crystals.
 
Last edited:
nickjaxe said:
As somebody else said.....waxing of diesel used to be a prob....ans seeing deisel can now be coming from ropy sources cos of the ukrain war maybe its aint got the winter anti wax additive in it.....were do you buy your derv.....not cheap stuff is it.

A dodge to stop waxing used to be stick a bit of petrol in with the diesel..cannot remember the mix....maybe 10%.

The other thing that springs to mind....there is a fine gauze filter just behind the fuel inlet into the injector pump.....if that part blocked that could do it....

What about your lift pump....how is that....several things can go wrong with that including one of the small one way valves sticking....look at stacxk pipe filter as well....maybe bunged up.

Not sure its been cold enough to wax diesel....unless you up north of the border..but the other old dodge was to go over the fuel lines with a blow lamp....and the filter body to melt the ice crystals.
Click to expand...
When I worked in a transport depot in the 80's the lorry drivers used to light fires under their engines early in the morning during very cold spells, we warehouse staff would watch eagerly waiting for one of them to burst into flames but none ever did.

Col
 
Colthebrummie said:
When I worked in a transport depot in the 80's the lorry drivers used to light fires under their engines early in the morning during very cold spells, we warehouse staff would watch eagerly waiting for one of them to burst into flames but none ever did.

Col
Click to expand...
When men were men and woman were grateful.
 
Spare a thought for WW2 "Erks" Airmen and sometimes women who's job it was to get big aero engines going when temperatures were below zero.
With some types like the big radial engines the only way to ensure they would be available in the morning was to run them up every couple of hours all night long. Once you finished with a line of aircraft [ some may have 4 engines] it would be back to the first and start again.
 
An
tottot said:
Spare a thought for WW2 "Erks" Airmen and sometimes women who's job it was to get big aero engines going when temperatures were below zero.
With some types like the big radial engines the only way to ensure they would be available in the morning was to run them up every couple of hours all night long. Once you finished with a line of aircraft [ some may have 4 engines] it would be back to the first and start again.
Click to expand...
ybody watch Ice Pilots when it was on....my word you do indeed have to baby those big old radials....even blasting warm air around them.....brutal weather in that part of Canada.
 
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