Ford C-Max Forum banner

1 - 12 of 12 Posts

·
Registered
Joined
·
7 Posts
Discussion Starter #1
Hi C-Max friends.
I'm searchin a wiring diagramm for the fuel pump cirquit.
I have a strange problem. The engine pumps foam througt the transaparent hose to the high pressure pump.
It's miracle that the car running (below 1500 rpm)
I cannot hear any noise from the fuel pump (build into the tank). [I have reassabled the rear seat and the carpet]
So I look to the manual to identify the fuse.
I found that the discribed position for the fuse and the relais was NOT there.
(F51 R15)
Is that woodo?

Jo23
 

·
Registered
Joined
·
7 Posts
Discussion Starter #3
Hi Wolfy. And where ist it? A pipe(inlet) goes from the diesel filter under the car and than (not to see from
the bottom) to the upper side from the tank. Under the rear seat is a hole (sealed with a rubber pice) and
4 cables are going trought that.
 

·
Registered
Joined
·
130 Posts
Hi Wolfy. And where ist it? A pipe(inlet) goes from the diesel filter under the car and than (not to see from
the bottom) to the upper side from the tank. Under the rear seat is a hole (sealed with a rubber pice) and
4 cables are going trought that.
the wires go to the fuel level sender for the dash reading of fuel level

the fuel pump is on the right hand side of the engine behind the vacuum pump
 

·
Registered
Joined
·
7 Posts
Discussion Starter #6
Hi wolfy and Oldman.
Thanks for your help.
So it seems it's not a mirracle that F51 and R15 is not fitted.
Question now: What is the reason for the foam into the transparet hose behind the filter?
Obviously ther comes air into the system on the way from the tankt to the fuel pump.
Any idea?

Jo23
 

·
Registered
Joined
·
381 Posts
There was a special notice from Ford about the fuel filter housing on older cars starting to not seal correctly allowing air to enter the pipework.
 

·
Registered
Joined
·
7 Posts
Discussion Starter #8
Hi Oldman.
Thanks for hint. I think i'll try to replace the filter with the sealing.
Little fear induced by the comments that it is not easy to make the fuel flow air free, but if
the engine runs with foam at moment, it cannot be impossible.

Jo23
 

·
Registered
Joined
·
381 Posts
It was the filter housing that was failing allowing air in, but yes try a filter and seal first, just remember to fill the filter with diesel and rev it up once you try to start it to keep it running. Unless you have a priming bulb connected. Good luck.
 

·
Registered
Joined
·
7 Posts
Discussion Starter #10
Thanks again Oldman.
Filter is ordered , arrival announced for Saturday.
I'll report if it's done.
Jo23
 

·
Registered
Joined
·
7 Posts
Discussion Starter #11
Hi Oldman , wolfy and the rest of the CMax Gang.
I'ts done. Change the filter and make it airfree like discribed on U-Tube video. (
)
Now no more bubble or foam into the pipes. Car is running with fill power.
10671

Old-new

Jo23
 
1 - 12 of 12 Posts
Top