jameslxdt wrote:when the gasket goes it usually takes the piston rings with it, but more often than not, the con rods
Are the Pistons *very* close to the HG on the XUD engines?
Is this problem above not the Water Pump?
no, the heads usually go on the motorway without th driver being aware, if your unlucky it will die and as the cylinders fill with coolant and you get hydraulicking, the piston rings blow and the conrods bend, you loose power as you crawl to the hard shoulder as the pistons flap arround munching there way through the block
if your lucky it will just go down the bores and be forced in the swirl chamber then back into the piston and forced past the piston rings on the ignition stroke, but it doesnt usually chuck out blue smoke as the white smoke covers it up
Peugeot wrote:what are you worried about? we made car that lasted 10 years"..."Zat is very goode non?
Mechanic still hasn't checked the cra and i'm back at uni now without the car so am unable to do the checks for a week or so. Out of interest, how would a failed water pump cause the cooling system to overpressurise?
I would have thought it would just not move the water around like it should and would probably cause the engine to overheat? How would the water still circulate in the system? It is definately still circulating in the system you see. Also with the cap off and the engine running, the coolent looks like it is smoking kind of. Even when the coolent hasn't warmed up.
Kind regards,
Rob
P.S: does anyone know of a company that sells reconditioned heads as in ready to bolt on?
In simplest terms.... because it is late of course!
There is no flow... the heat from the water is transferred throughout the cooling system, thus building a sustained heat past boiling point... this causes pressurisation.... as there is no flow, there is no way for the coolant to cool through the rad or by the fans..... because the coolant in the rad is the only bit cooling, thermo dynamics would show that the heat disserpation occurs only in the rad yet the cooling affect is not great enough to alter the temp of the engine / connected perhiperals... does this make sense?
Anyone else got a better answer.... beer, vodka and few too many blows to the head aren't good for a thursday night!
Niz406
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"Some Say he can fart fire, whilst others say he can urinate rocket fuel.... all we know is he's called... The Niz"
Well the headgasket is gone! As well as possible piston slap( mechanic says it sounds like it) so I'm after a new engine. Anybody know soemone breaking a 406 1.9td?
One question...If I get a new engine and fit it and put everything back ok, will it work ok? I think I read somewhere that the fuel pumps are coded to the ECU so will I need to put the original fuel pump on this new engine?
Anyone know if the fuel pumps are coded to the ECU/Engine/immobiliser? If I fit a new engine next week will I have to swap them or is it just a case of sorting it all and starting it up?
have you got a keypad?
there's a module in the pump that is coded to the keypad or the transponder in the key, its simply a case of removing the pump drilling out the stop solenoid shield and getting a wire with an ignition feed straight to the solenoid
Peugeot wrote:what are you worried about? we made car that lasted 10 years"..."Zat is very goode non?
Yeh I do have a keypad as does the new engine. If I fit the new engine, couldn't I just swap fuel pumps? Or is this a big job? Any one on here managed to change the fuel pump ok?
