Water in my 1996 406 pls help!

[406owner2]

Thanks for that illustration, so... as i see it, possibly i can disconnect it in the the engine, not having to go underneath like this ?: (i think i have the EW7 motor. looks the same to me.)

[406owner2]

Perhaps i should just go take a picture of the engine and post it, perhaps you could show me which pipes they are or where to look...?... i'll go do that....

[406owner2]

... encircled in red ?... i'll go see if i can see the pipes there thanks.

[406owner2]

aaa think i found it :

(need to clean off everything, and i guess i will then need to try to siphon on those pipes, hope there's not some sort of a one way valve between this pipe and the fuel tank ? Or something else blocking the fuel ?

[406owner2]

If i run the fuel pump, should it be strong enough to circulate to the front, without suction from the engine when cranked ?

Of course the pump would have to have fuel in it i know.. Just trying to find the best way to siphon fuel from the front rail as in picture. Any idea what is incoming fuel and what would be returning ?

[406owner2]

seems to be going directly into the fuel pressure sensor/valve/regulator :

[406owner2]

Perhaps take it off at points nr 1, 2 or 3 as shown in picture and crank the engine ? What are your thoughts ?

[steve_earwig]

I suspect you'll end up with fuel everywhere...

[406owner2]

What if i instead put an outlet pipe leading towards a bucket ?

This seems like my best shot at it, if there is a better way, i'm all ears.

My guess is the best way to get the fuel out is to take of the pipes, then yes fuel all over, i can clean that i guess, but before that i guess we are all concerned about sparks and fuel getting hot on the engine..... how about covering the starter motor and battery compartment ? i just don't know how else to go about it ?

external pipe to bucket ?

[steve_earwig]

Well yes, pipe to a bucket, if you can figure out which pipe it is http://peugeot406coupe.nl/catalogus/D8F/1/15E15A.HTM

Mind you, if you can power the pump up without turning the engine on (stick?) maybe you can take the outlet pipe off of the fuel rail (ramp?) and run it all the way through. I'm not sure if there are any valves to stop you doing this though...

[406owner2]

Well yes, pipe to a bucket, if you can figure out which pipe it is http://peugeot406coupe.nl/catalogus/D8F/1/15E15A.HTM

Mind you, if you can power the pump up without turning the engine on (stick?) maybe you can take the outlet pipe off of the fuel rail (ramp?) and run it all the way through. I'm not sure if there are any valves to stop you doing this though...

Thanks for the picture Steve it helps a lot !


Ok that should get rid of any water in the lines, good idea thanks, but then what about water in the engine ?

This is a tough one for me, these are just my thoughts:

If i use the pump, first i would have to fill the car tank with fuel for the pump to work, then there's risk of the fuel getting contaminated with the water again ? Perhaps just not connect the returning pipe that goes back to the tank. Ok i guess what i just said should work, however like you mentioned, will there be something stopping the flow ? and how to get the water out of the engine itself ?

I'm thinking, cover the whole engine with rubbish bin bags, only leaving open the part where the fuel will spray out, crank the engine, or if possible put a pipe on the area where the fuel will be coming out from the engine itself, wherever that may be ?

diagram attached ( does it seem right)

[406owner2]

Last post edited with picture. (perhaps i need to take off the regulator or attach a pipe there somewhere ?)

[406owner2]

ok on the engine side, so where will the fuel be spraying out from ?
the part returning to the fuel tank, or the part where the fuel comes in from the tank, see attached.

Perhaps i should just cover the engine like mentioned with plastic rubbish bin bags and take off those pipes and let it crank for a while ? then try suck out the water at the pipe coming from the rail that leads toward the fuel filter ? (if indeed we still have water in the system.)

[steve_earwig]

Umm... I can't imagine the injectors could inject enough water into the cylinders to hydrolock the engine, I'm just concerned that there's water in the injectors (or could get to them) and I don't know if it'll damage them. Hey, I'm playing it safe because I can't see what you're doing and I'm not sure of the consequences (give me a carburettor any day). I 'think' the best you can do is clear any water out of the lines and the injection rail/ramp and hope for the best.

What I 'think' you could do is disconnect the return line under the car somewhere, maybe above the tank, and run a pipe from it to your bucket Then, without turning on the ignition, run the pump so it pushes fuel from the tank, around the system and out of the pipe you disconnected so you can check for any water in it. Presumably if there is no water (you should be able to decant this off) or any other contamination (dust, dirt, blood etc.) you can reuse this fuel.

[406owner2]

ok thanks so if i run the pump without cranking the engine, would it allow fuel to flow through the whole system and back to the return line. (or perhaps i should crank the engine while i do this ?)

then if it would, after i've done that, how about disconnected the fuel inlet a t the pump like mentioned and crank ? and or/ removing the spark plugs and crank ?