Proton Wira/Persona Fuse Box Diagram?

[gunnerzz]

have you tried removing the fuel hose at the fuel pump and crank the engine when its cold?

another long shot item is the fuel filler cap.try borrow from one from similar model.

 

[Izso]

That's a good point to check. Fueling

 

[vr2turbo]

But he has changed the fuel pump and rectify the tank bent tube.....

 

[parakey]

have you tried removing the fuel hose at the fuel pump and crank the engine when its cold?

I had the fuel pump replaced and while the car was up on the jack, I manually checked the steel lines leading to the front making sure there are no crimps or irregular bends. Wasn't expecting anymore fuel issues

another long shot item is the fuel filler cap.try borrow from one from similar model.

Interesting, I never thought of the fuel filler cap. It's a long shot but interesting idea of how cooling temperatures may produce a slight vacuum air pressure preventing fuel from being pumped out.

Will definitely look into this. Thanks

 

[parakey]

I wonder if the breather assembly will cause any issues

 

[vr2turbo]

Interesting, I never thought of the fuel filler cap. It's a long shot but interesting idea of how cooling temperatures may produce a slight vacuum air pressure preventing fuel from being pumped out.

Will definitely look into this. Thanks

On my Chery SUV I am getting a reverse effect. Normal crank start every time, but if I open the fuel cap to refuel then close back I have to crank longer to start, or at least 3 times. Once started, it becomes normal again unless I open the fuel cap.....lol

 

[Izso]

that is seriously so weird. (The fuel cap)

 

[^pomen_GTR^]

I wonder if the breather assembly will cause any issues

have u check if your car sending enough fuel pressure for priming?

do you heard any fuel pump sound during first key turned-on?

 

[vr2turbo]

have u check if your car sending enough fuel pressure for priming?

do you heard any fuel pump sound during first key turned-on?

Even if fuel pump, first already changed and second why only morning......lol

 

[vr2turbo]

that is seriously so weird. (The fuel cap)

I don't know also. because after the car start it is normal again.....

 

[^pomen_GTR^]

Even if fuel pump, first already changed and second why only morning......lol

Not suspecting the fuelpump... But more towards fuelpump controller...

 

[parakey]

Interesting, I never thought of the fuel filler cap. It's a long shot but interesting idea of how cooling temperatures may produce a slight vacuum air pressure preventing fuel from being pumped out.

Will definitely look into this. Thanks

Update - The past few mornings, I had difficulty starting the car. So I opened the fuel filler cap. I read if there's a vacuum, there will be a whoosh sound when the cap is opened. Didn't hear any such sound. I just open and immediately closely back. Strangely, the car was able to start after that. Each time it won't start, I just release/normalise the pressure in the tank and it will start.

Thanks to all who helped. Specially gunnerzz

Now I have to wait till I finish that full tank of petrol before I ask the workshop to lower the tank
Still want to find out why it's not breathing properly

 

[sweelt]

if u googled, there's a pressure relieve valve for fuel tank.

 

[vr2turbo]

Update - The past few mornings, I had difficulty starting the car. So I opened the fuel filler cap. I read if there's a vacuum, there will be a whoosh sound when the cap is opened. Didn't hear any such sound. I just open and immediately closely back. Strangely, the car was able to start after that. Each time it won't start, I just release/normalise the pressure in the tank and it will start.

Thanks to all who helped. Specially gunnerzz

Now I have to wait till I finish that full tank of petrol before I ask the workshop to lower the tank
Still want to find out why it's not breathing properly

So the reverse of my Chery SUV effect. Maybe you need to use a loose fuel cap......lol

 

[gunnerzz]

The fuel filler cap has a function but i forgot what it is.
my brother and i was doing trial and error to find fault in his fuel system not to long ago and he did teach me but i forgot already.

Anyway,glad to hear it solve the problem.
might as well change the fuel filler cap.
if its raining then difficult for u to open the fuel cap rite..hahahha.