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A pipe that leads unspent fuel back to the fuel tank
 

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The fuel rail is under a set pressure... the pump provides more fuel pressure than required to deliver enough fuel.
The excess fuel is sent back to the tank by a pressure relief valve normally.
That way the fuel presure at the injectors is always the same.

If the fuel return is blocked the excess pressure cant be relieved.
So the extra fuel has to go somewhere..... or the pump has to stop ;)

I dont believe there is a fuel return on the honda....think its in the tank at the pump instead.
We talking petrol or diesel ?
 

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Discussion Starter #5
The fuel rail is under a set pressure... the pump provides more fuel pressure than required to deliver enough fuel.
The excess fuel is sent back to the tank by a pressure relief valve normally.
That way the fuel presure at the injectors is always the same.

If the fuel return is blocked the excess pressure cant be relieved.
So the extra fuel has to go somewhere..... or the pump has to stop ;)

I dont believe there is a fuel return on the honda....think its in the tank at the pump instead.
We talking petrol or diesel ?
it is diesel.I was think the same but I bought 5 litres of diesel warm up then put in clean tin then I toke the priming off and put the pipe into to the tin after a few minutes all gone.I have to confuse that the proble been resolved for 2 day.I was drive 15miles per day then happen again the car stopped .
how to I know if is blocked it?
 

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Discussion Starter #7
how many fuel filters has a honda civic 2.2?

how many fuel filters has a 2007 honda civic 2.2? .
I belive there is 2 one in thank and another in front of the car.
I the fuel pipe is blocked where should be?
 

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Cockup Specialist
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Thanks.
do you know how what should I do if I priming and don't come fuel?
What may be the problem?
Pipes fitted wrongly.
valve or pipe blockage.
Air/Fuel leak.
Empty tank.
Crushed pipe

I think you need to pump 300-400 times in the honda pdf.

track the route from the priming bulb back to tank and make sure there is no issue en route.
I beleibe there is a one way valve too to stop the fuel flowing backward.
 

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Discussion Starter #11
Pipes fitted wrongly.
valve or pipe blockage.
Air/Fuel leak.
Empty tank.
Crushed pipe

I think you need to pump 300-400 times in the honda pdf.

track the route from the priming bulb back to tank and make sure there is no issue en route.
I beleibe there is a one way valve too to stop the fuel flowing backward.

I believed is valve or pipe blockage do you know how shall I unblock. It
 

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Cockup Specialist
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12,885 Posts
Strip everything down and check.
disconnect pipes at each end and blow....as long as there is no one way valve in the way.
Its not gonna be a 5 min job.... nor an easy one.
You may have a secondary pump in the tank too.

I would also make sure your fuel cut off switch isnt active before doing any of the above ;)
 

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Discussion Starter #13
thanks I put some redex and I think looks better.I going to halford to see if they have some to clean the fuel system I am change the filter on Monday is about £60 Just the filter is £37
 
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