The quest for a nice diesel has ended, with me gettng a lovely 406 1.9 GLX DT for 630 notes...


On the downside tho, i seem to have noticed that it doesnt like starting when its hot, and needs a lot of turns of the engine and pumping of the accelerator to get it going.

Any ideas?

Could be taking air in somewhere, or fuel is running back from the injector pump - non return valve, or fuel filter housing shagged. Worst case scenario - injector pump.

To be honest, an XUD that has hot starting problems is not worth wasting your time on...There are a lot more out there for the same class of money that work properly (Look at the Xantia over the 406, it has better suspension and brakes, and is built a lot better, and youll get one cheaper)

Check the valve clearances

Quote from: filbertCheck the valve clearances

on hydraulic tappets?  (iirc they are on the later models).  

Just asked a dude i know, he suggested the similar to Mark, but also mentioned that the Turbo gate sometimes gets starts to stick on them if the car has been used for lots of short runs in the past, as opposed to letting it get up to temperature.

Valve clearance checking went out with the likes of Austin Allegros!

If the turbo wastegate is stuck (Quite unlikely) closed then boost will not stop at the correct level, but this is extremely unlikely.

Does it start striaght away once stopped but not after being left for like 30 minutes?

I hope it isnt your pump, but if it is, you can get them reconditioned. You might also be lucky and get a second hand one - is it the bosch or lucas? Remember that all citroens and peugeots with the 1.9TD use the same engine (Albeit with slight differences for the BX and Xantia for the hydraulic pump) so youre sorted for plenty of spares.

Quote from: MarkIf the turbo wastegate is stuck (Quite unlikely) closed then boost will not stop at the correct level, but this is extremely unlikely.

Aparrently while its not common its not unusual.  The dude i asked said its down to the engine never getting hot enough due to short runs and crap in the fuel.  

The wastegate opening hasnt anything to do with temperature - its opened as soon as boost reaches a predetermined level. A popular modification (Depending on whether you have the garett or kkk - is increasing the pressure at which the wastegate opens - as simple as turning a screw. A small adjustment is then required at the pump.

The fuel filter is there to get all the sh*te out of the fuel, one thing that quickly blocks it is the use of poor quality biodiesel.

as described to me : when the engine doesnt get hot enough it doesnt burn properly it thrown unburnt fuel out of the engine, that usually end up being left on any surface that is available.  When the engine gets hot it normally then burns off again.  But if the engine isn;t given the chance to warm up then the crap just builds up and never gets cleaned off.

Im not the person who spends his days with his head under the bonnot of cars, and turbos arent something I personally would mess around with anyway.  Gearboxes, Turbos and Crank Bearings are things for other people to do

ok then dont, sorry for such a stupid suggestion :bowdown:

The advice in my Ford handbook for diesel hot start is to keep the accelerator pressed down continually until it catches (not pump it).

i must admit i was secretely hoping youd just say

"change the glow plugs and it will be fine"



Oh well, looks like i will ave to live with it, as i picked it up for cheap and cant afford any better for a while

what does it idle like?

Sounds like a bag of sh*te, but idles at about 850 RPM and drives lovely, pulls nice and doesnt miss or anything.

do the heater plugs stay on for the same amount of time if the engine is hot or cold ?

noticed on my bm, if the engine is hot they dont run / run for a shorter time.... ?  (clutching at straws here tbh)

The glow plugs have nothing to do with it when its warm tbh - its more likely fuel starvation caused by either air ingress or fuel running back from the pump.

Check the non return valve out - thats most likely and cheapest to fix.

Then check for air ingress, and lift pump operation.

Lastly if she is a very high miler, its likely just to be plain wear on the injector pump letting the fuel leak back.

A good test is to prime it when hot before you start it - if it starts first turn when you prime it, the fuel is running back, or theres an air leak.