Metal shavings in fuel filter housing.

Metal shavings in fuel filter housing.

Author
Discussion

xreyuk

Original Poster:

665 posts

146 months

Monday 8th April 2013
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Hi All,

I've been having recent power problems in my 1.6CR TDI Seat Leon that has been going back over and over again to SEAT to diagnose (that's another story).

Basically the car felt low on power, was slow picking up from low-ish revs and was getting harder to start on coldish mornings (below 5ºc, this is a 2010 car), I was advised to check the fuel filter for blockages. The filter was supposedly changed by a garage on my last service, approx 3k miles ago, however for all I know they might not have replaced it (although the filter looks pretty clean). Upon inspecting it when I took the fuel filter lid off, I could see small metal shavings on top of the filter, a fair amount of them actually, although all of them very small, like specks of dandruff.

Obviously, I don't know that when/if the fuel filter was changed by the garage, if they drained the housing before putting in the new filter or not, so these metal flakes could be build up from 30k miles worth of driving, or just 3k miles.

Googling this brings up a ton of doom and gloom about HPFP failures on VW CR engined cars, however these are all in America, and from what I understand it's not a common problem in Europe. Some other links suggest it is normal to find a few flakes floating around in the filter as 'normal' wear and tear stuff.

Do you guys think I should get this checked immediately, or is it something not to really to worry about? Or should I change the filter and drain the housing myself (car is now out of warranty by a week) and then see if the flakes reappear?

Even though the car is out of warranty, as the fault was reported to SEAT some 4 months ago, I'm still in contact with customer support about getting this fixed, so it's possible this will be their bill, so again, not sure whether to just take it to the garage or not.

Any advice appreciated smile

xreyuk

Original Poster:

665 posts

146 months

Sunday 14th April 2013
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I forgot about this thread, so am bumping it for some advice smile

iangex

46 posts

149 months

Sunday 14th April 2013
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If it were me, I would replace the filter again. Drain the particles from the housing also.

My 306 HDI struggled to start when the fuel filter was getting blocked. For the sake of a few quid, you might as well before doing anything else.

McWigglebum4th

32,414 posts

205 months

Sunday 14th April 2013
quotequote all
Hard to say.

If you are getting metal bits large enough to see in the filter then i would guess the high pressure pump would be very very fooked.

To keep the goodwill i'd get SEAT to service the car and ensure they change the fuel filter and if the tech is half decent he will find the shavings


jeebus

445 posts

185 months

Sunday 14th April 2013
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Is the filter not before the high pressure pump?

DrDeAtH

3,588 posts

233 months

Sunday 14th April 2013
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The shavings enter the filter via the fuel return line from the injection system.....

donaircooleone

428 posts

178 months

Sunday 14th April 2013
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In tank pump ?

xreyuk

Original Poster:

665 posts

146 months

Sunday 14th April 2013
quotequote all
For the above, this image:


Shows where the filter lines go. In the USA the HPFP failure has been very common due to their lower quality fuel. The first sign of that failure is apparently metal shavings in the filter.

Here is a picture of the metal shavings:

Apologies for the sizes of the images.

v64paul

120 posts

222 months

Sunday 14th April 2013
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I'd say change the filter again. cleaning out as much as you can. As a word of general advice avoid supermarket diesel like the plague. I service Fuel tankers and get to see what they deliver. The cheaper brands resemble chip fat, we are led to believe it's imported lower grade fuel which is beefed up here. Bio diesel is causing headaches also. Modern common rail engines are intolerant of low quality fuel as i know from personal experience (Mondeo TDCI) i now run a petrol.

xreyuk

Original Poster:

665 posts

146 months

Sunday 14th April 2013
quotequote all
Cheers, I've only ever run Shell fuel in there anyway.

xreyuk

Original Poster:

665 posts

146 months

Sunday 14th April 2013
quotequote all
I forgot to ask, some people I've spoken to have said it can be normal to see these shavings in there, anyone else agree?

Think I'll try draining the housing, cleaning it, and replacing the fuel filter.

v64paul

120 posts

222 months

Monday 15th April 2013
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I've never seen it , not SEAT specific you understand. My experience is based on engines by the large commercial vehicle manufacturers. Particles/sediment in the filter, sure but metal is a new one . I'd be interested to see the outcome, this is after all just a VAG engine isn't it ?

xreyuk

Original Poster:

665 posts

146 months

Monday 15th April 2013
quotequote all
v64paul said:
I've never seen it , not SEAT specific you understand. My experience is based on engines by the large commercial vehicle manufacturers. Particles/sediment in the filter, sure but metal is a new one . I'd be interested to see the outcome, this is after all just a VAG engine isn't it ?
Yeah it is.

A couple of guys who've worked at VAG specialists have said on the owners club forum that it's common to see some, but it all depends on the amount, so I've posted the image over there to see what they say.

Like I say, some people I've spoken to say it can be normal depending on the amount, others say it's definitely not normal. Think I might take it in just to be on the safe side, as with my other symptoms, it sounds like a HPFP failure.

As I said, it was a very common problem in USA, it was investigated by their governing body because the pumps weren't good enough for their crap fuel. As the fuel is the only lubricant for the pump, they all failed. The first sign was finding metal bits in the filter.

Chedders91

1 posts

52 months

Wednesday 22nd January 2020
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Hi there,

What was the outcome on this? I have a 2011 1.6tdi ecomotive, just had it serviced to find loads of metal shavings in the filter. Do i go ahead and replace pump and clean through fuel system?

BTW car runs absolutely fine

Many thanks!