Fuel tank problems

[clio fan89]

Just wondering if I could have some advice on my partner's mk4 diesel tank, she's noticed that the fuel tank underneath the car is two different colours almost like part of the tank is dusty. If someone could shed some light on this or help me solve it it would be greatly appreciated

 

[Márquez6]

I'm in the process of cleaning/protecting under the car my tank is the same..mine looks like Renault were trying to save money and only coated half the tank,wish they never bothered cause it a nightmare to get off..

 

[clio fan89]

So its pretty much a cost saving exercise by Renault then

 

[Márquez6]

Maybe they didn't coat the tank and mine is 16 years of road dirt,.i found farmer's field under the front wheel arch linings...

 

[Márquez6]

So its pretty much a cost saving exercise by Renault then

Looking at the picture again it looks wet,you better make sure it's not leaking.

 

[MRBILLYUK]

Looking at the picture again it looks wet,you better make sure it's not leaking.

Definitely looks wet to me too in the pics. The op needs to get his hand under and touch it and see.

 

[Márquez6]

Definitely looks wet to me too in the pics. The op needs to get his hand under and touch it and see.

If it's a leak I know how to clean my tank now it's come up like new.

 

[clio fan89]

Surely if there was a leak it would have a drip and a puddle on the ground which there is none of

 

[MRBILLYUK]

Surely if there was a leak it would have a drip and a puddle on the ground which there is none of

You'd think there would be a small puddle. It does look wet though. The only way you'll know is to stick your had on the patch and have a sniff.

 

[clio fan89]

She is keeping an eye on it and has done that few times, she has said it does smell like diesel but surely some smell could from residual fuel

 

[Louis]

Did you try cleaning it?

 

[Márquez6]

Maybe wipe it and check the next day...

 

[MRBILLYUK]

She is keeping an eye on it and has done that few times, she has said it does smell like diesel but surely some smell could from residual fuel

So you haven't tried to stick your hand under and touch it to see if it is leaking diesel? It'll take you 1 minute to check.
It'll fail its mot if its spotted when they test it.
I'd be looking to fix it sooner rather later.

 

[DomP182]

Theres a short length of flexible rubber pipe connecting the filler neck to the tank, on my 172 thr jubilee type clips had rusted and become loose to the point of petrol running tho that exact area.

 

[clio tyres]

Just wondering if I could have some advice on my partner's mk4 diesel tank, she's noticed that the fuel tank underneath the car is two different colours almost like part of the tank is dusty. If someone could shed some light on this or help me solve it it would be greatly appreciatedView attachment 1522169

Has it had a fuel filter change and thats just the residue thats been wiped off the tank.