All,

 

Interesting one on the 175k miler Octy today. went for local drive at 16:15 and had the windows open nice warm day. kept smelling diesel. assumed it was an external issue on the roads, first hot day in a while on the local roads.

 

Got back home through some local slowish traffic thought I would park up and check the engine bay.

 

Low and behold the airbox was caked in diesel fuel and most of that side of the car.

 

Started it up and fuel was squirting from the small length of rubber hose that is fed from the fuel filter across the top of the engine in metal and converts into a small rubber hose into what might be the Tandem Pump on the right side of the engine.

 

I knew it would be a simple fix just replace the bit of hose and 2 of those weird hose clamps VW group use on everything.

 

I chickened out and called the AA and they came out observed the same issue and struggled to remove the pipe as one side of the clamp/clip could not be squeezed open, so needed to be taken off with some force.

 

New slightly lesser diameter generic pipe put in place cut to size and new clamp went on one end as a jubilee clip gave up as soon as it was tightened up.

 

Car was started without issue except a slight gurgling I heard when it primed when I put the ignition on.

 

Taking a look at the faulty part the hose gave way right next to the hose clip on one end, I even think it was the end with the broken clip, perhaps that was the cause

 

I asked the AA Patrol to clean up the diesel that had fallen down onto the gearbox, he said there was not much and just used some tissue to dry some of it saying the rest would evaporate etc.

 

I was told it was the inlet side of the fuel system and the other side is operated at much higher pressures.

 

I could not find another post on the subject on the forum

 

Worth keeping an eye out on older cars maybe its an age thing these parts perishing?

 

 

 

I had a weeping fuel line at the tandem pump, 06 1.9PD.

Bought 2nd hand like that and it seems to have managed to foul the clutch resulting in jerky biting point.

Small section of rubber hose replaced and clip substituted for 2 small jubilee clips and leak fixed, a few hundred miles later and clutch works smoothly.

If you ever smell diesel under the bonnet of a modern car you need to investigate.

Hi MicMac. Sounds like it's not just me. How many miles on your car at the time?

Why did you replace the tandem pump btw?

I had mentioned the fuel on the gearbox to the AA. Like I said he wasn't too concerned.

Any advice from anyone on how to clean up down there, don't fancy hosing it due to water ingress damage?

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I've got the same issue on my wife's 103k 2010 Fabia 2. Sounds like the same short length of rubber hose connecting the pump on the rhs to the metal fuel line coming from the fuel filter. It's spraying a very fine mist of diesel, seemingly from right next to the hose clamp. I need to do the job today so I think a quick trip to the local dealer will be necessary. Haven't noticed any issues with the clutch, thankfully.

There's a similar post in the Fabia 2 section btw.

@gav_is_con

 

I don't know how I missed your question nearly 4 years ago!

 

Mileage probably around 120K.

 

I didn't replace the tandem pump just the small length of rubber hose.

 

As far as cleaning the bell housing/gearbox, I just used a bucket of boiling hot water with plenty of laundry detergent and poured it down and over the affected area. Followed it up with several hot rinses and took it for a drive to dry out.

Edited 27 November, 20187 yr by MicMac

Hi guys,

A longshot that any of you still have these vehicles, but does anyone have a pic of the hosing that was causing the issue? I think I'm battling the same issue on my Octy and I want to know where I should be looking!