fuel shutoff valve - Benzworld.org

skitzy.sht · 03-17-2007, 07:33 PM

old posts http://www.benzworld.org/forums/w201...help-help.html

where is it if ther eis one
we are currenly installing the large rear fuel filter, we are taking the old one out, and fuel is comming out
we dont want to procede untill we know if theres a shutoff valve, or weknow tha the fuel dosent comout unless the engine is on?

Samoila Stefan · 03-17-2007, 08:00 PM

Put a finger on the hose till you change the filter.... and don't smoke weed while doing that...

As you can see...

skitzy.sht · 03-17-2007, 08:16 PM

well we just did it anyways, without hte finger, and the fuel stopped
so it must have a automated shutoff valve, if pressure isnt right or something?

Samoila Stefan · 03-17-2007, 08:51 PM

I think that (fuel shut-off valve) works for diesels.

**Kynyption** · 03-17-2007, 10:31 PM

Fuel tank is sealed. Need I say more?

Dare you to try it again with your gas cap off and rely on that "automatic fuel shut off valve"

Samoila Stefan · 03-17-2007, 10:36 PM

Hydraulics basics

Pascal's law

In fluid mechanics, the statement that in a fluid at rest in a closed container, a pressure change in one part is transmitted without loss to every portion of the fluid and to the walls of the container. The principle was first stated by Blaise Pascal, who also discovered that the pressure at a point in a fluid at rest is the same in all directions, and that the pressure would be the same on all planes passing through a specific point.

skitzy.sht · 03-17-2007, 10:51 PM

ahhaha Kyn u charmer
i tried it
yer, quiete a nice mess might i add.

i remeber, yer pascals law, i learnt that in science, its like picking up water with a straw, with a finger on one end,

thanks stefan

**Kynyption** · 03-17-2007, 11:18 PM

I could only imagine the mess :-p

skitzy.sht · 03-18-2007, 02:27 AM

um well weve installed them, and i was hoping it would fix the problem with the random engine stalls, and troubles starting up, but no its progresses the problem, it was fine for 2 minutes, and that was after leaving it idle for 5 minutes, the engine stalled, and didnt want to start up again
i left if there for 2 hours came back and again refused to start up, now we are thinking it is electrical, the annoying this is , its going to cost us a good 200 dollars to get the damn thing towed to a mercedes service place out near us, and then he will charge us $1300 dollars to fix it, my friends car had start up problems like the symptoms mine now is showing, but it didn thave the trouble stalling
any thoughts thanks

tavioman · 03-18-2007, 05:44 AM

Told you so!!! I have changed even the fuel pump. But that din't fixed. And by the way... i din't take any precaution while taking out the fuel pump assembly and me and my friend have made a gasoline bath al over. From head down. That was funny... we ware full of gasoline all over(99 octane).

I have some ideas about our problem. Fuel pressure regulator, fuel accumulator and fuel pump check valve. Other than that only god knows. But I buil up a theory after reading several pages from the service manual. And al clues indicate those three points. The problem is I believe that we lose fuel pressure, and engine starves. Another key point to look at is the EHA. Next week, monday or tuesday I'll change my EHA since I have a spare one. If that does not fix the problem then I'll have to check the other components.

And something else....
After my engine starts for 5-10 minutes it's ok. It's running. After that it's starting to fail and stall. My stalling probleam it's a bit weird:
It stalls every 1 minute and 30 seconds. It's pretty timed the fucking thing.
You should watch this. See if it stalls periodicaly.