Nissan micra 1.3 auto fuel tank drain

[lala101]

Hi, I have a lot of dirt in my tank which is causing the car to misfire, how can drain the fuel tank or what is the best way to drain the fuel tank please?
thanks

 

[1275]

How do you know you have dirt in your tank?

edit, just seen the other thread http://www.micra.org.uk/threads/nissan-micra-1998-1-3l-auto-misfiring.57901/ surely it is better to stick to that thread, rather than starting a new one.

 

[r-reg-sr]

could be another broken throttler body. you could try a known good one from a running auto

 

[lala101]

throttle body is good, it come of a good running car, when I removed the fuel line from the fuel filter and turn the ignition, only a small amount of fuel comes out, which means there is a problem with the pump or dirt in tank

 

[Enuo]

throttle body is good, it come of a good running car, when I removed the fuel line from the fuel filter and turn the ignition, only a small amount of fuel comes out, which means there is a problem with the pump or dirt in tank

Fuel fikter sits above the fuel level in tank mind, would have to sit the fuel hose below floor of car to check correctly, assuming the fuel pump allows free flow through it in the direction of flow.

 

[lala101]

the fuel filter is in the engine bay

 

[Enuo]

the fuel filter is in the engine bay

Your point is?

 

[lala101]

what I meant is that I have done the same test to two micra's the micra that runs well has loads of fuel coming out of the fuel filter once the ignition is turned, the one with the problem only a few droplets come out when the ignition is turned

 

[Enuo]

My bad, didn't read the turn ignition bit. Try earth to the fuel pump, earths cause a lot of electrical gremlins. That and twist and taped connections

 

[lala101]

sorry can you explain a bit more about the earth please, also can it be a problem that when the fuel runs low that the pump is sucking in dirt, as the problem only happens when the fuel gauge drops to the beginning of the red of the fuel amount? the fuel in the tank is dirty, the original pump from the car was also dirty, the mesh on the fuel pump was full of dirt

 

[Enuo]

sorry can you explain a bit more about the earth please, also can it be a problem that when the fuel runs low that the pump is sucking in dirt, as the problem only happens when the fuel gauge drops to the beginning of the red of the fuel amount? the fuel in the tank is dirty, the original pump from the car was also dirty, the mesh on the fuel pump was full of dirt

If the earth point of ypur pump has corroded your pump may not be runnig at full voltage due to the resistance at the earth point caused by rust. It could also be the problem you suggested, or a crimped pipe or simply there isn't any fuel in the tank and your fuel gauge/sender is faulty.

 

[lala101]

thanks for your response, I will check everything out tomorrow, is it possible it can be a ECU fault and how can I clean the tank?
thanks

 

[Enuo]

thanks for your response, I will check everything out tomorrow, is it possible it can be a ECU fault and how can I clean the tank?
thanks

Tank should be steam cleaned ideally, be VERY wary of leftover petrol fumes. No smoking etc. Avoid chemical cleaners that can perish seals on injectors when they get washed down the system with the petrol later on. If you find it has holes in it after you clean it, you can't weld it until it has been aired out for at least 3 days

 

[lala101]

Tank should be steam cleaned ideally, be VERY wary of leftover petrol fumes. No smoking etc. Avoid chemical cleaners that can perish seals on injectors when they get washed down the system with the petrol later on. If you find it has holes in it after you clean it, you can't weld it until it has been aired out for at least 3 days

Thanks,

 

[1275]

I imagine you'd have to take the plastic fuel tank off the car to clean it out properly. But I don't think that is the issue.

 

[lala101]

what do you think the issue is please?

 

[1275]

what do you think the issue is please?

I'm not sure sorry, but the dirt in the bottom of the tank shouldn't get sucked up. Did the new pump work and is it fitted correctly? although having said that the issue was already there wasn't it? bad electrical connection? blocked or crushed fuel pipe?

edit, blocked breather on tank, try with the cap off.

 

[frank]

sounds like the notorious rusted filler neck problem ?
removing the tank is a bit of a mission