I've got a 2.5 15j N/A in a 1972 lightweight. Recently it has started stalling when decelerating. I've increased the tick over but it hasn't stopped the stalling. Any ideas?? This subject has probably been covered before but as a newbie to this I wanted to ask the question myself.

How much have you wound the idle screw in by? Might be worth trying to wind it in some more and see if that helps the problem?

Thanks for the tip ... first off I went round all the fuel connectors, tightening them just in case there was an air leak. Also wound the idler screw in a bit, but it didn't solve it. Have now adjusted the idler further in and haven't stalled for quite some time.

Thanks for you help, keeping my fingers crossed!!

No problem, I had exactly the same thing with mine, took a fair bit of winding in to stop it stalling. Let us know how you get on

might sound daft but have you checked the eletric current to the stop solinoid i had a problem with noth enought current to keep it open. could try that

There should be no reason suddenly the idle speed needs adjusted that much, even with the idle speed very low the engine will still run albeit a bit rough.

Sounds like there is air getting into the system since it coincides with deceleration; when the fuel rate slows it gets a big slug of air and dies, the Lucas pump must have 100% air free fuel.

On top of the fuel filter housing there is a banjo, undo it, take the bolt out and look for the tiny hole, clean it out with a strand of wire and make sure you can blow through it.

Then make sure that the pipe it leads to is not damaged or blocked, this is where any air goes that the lift pump brings up, up to the top of the filter housing then back along the return pipe.

Once this has been checked you can check the OUT pipe to the injection pump (the IP is fed from the back where the injection lines come out), so make sure the connection at the filter head is good and tight, and make sure the connection at the back of the pump is good and tight.

There is also a possibility that the governor is sticking; when you take your foot off the throttle particularly in gear as rolling vehicle will keep the engine speed up, the governor will see that the engine is going faster than the throttle is calling for and ALL fuel is shut down to the injectors, it only then throws in more diesel once the speed drops below the idle speed, this system as you can imagine is very sensitive. If the pump is dirty inside or gummed up it can cause sticking and after deceleration it sticks in no fuel position. You could try a heavy duty dose of injector cleaner into an almost empty tank of fuel, or a pint of white spirit (similar stuff and cheaper) to try and clean the pump out.