Technical Breather Hose Split - where does it go to?

[baddevotions]

Hey all,

I serviced the fiat 500 today and when i took the airbox off to do spark plugs and air filter, i noticed that the small hose that goes into the back of the air box is starting to split. Where does this hose connect to? Is it easy to replace? It looked like it was headed to under the throttle body, but not sure.

From looking at eper it looks to be part number 51888291. but in case of doubt it's this bit circled in red.

Many thanks!

 

[steveras57]

Think it goes to the back of the manifold underneath the throttle body on the right side below and behind the thermostat housing!, the throttle body, the throttle body is easy to remove just 4 bolts and an electrical connector to undo! you should be able to trace it back easily by hand!

 

[baddevotions]

Think it goes to the back of the manifold underneath the throttle body on the right side below and behind the thermostat housing!, the throttle body, the throttle body is easy to remove just 4 bolts and an electrical connector to undo! you should be able to trace it back easily by hand!

thanks for that. I was looking at the throttle body thinking it's just four bolts but wanted to check to see if anyone knew where it went first.

Will get a new hose ordered

 

[steveras57]

thanks for that. I was looking at the throttle body thinking it's just four bolts but wanted to check to see if anyone knew where it went first.

Will get a new hose ordered

a quick squirt of wd 40 in the end of the hose will make it slip onto the union easier!

 

[Bodisan]

Hi. I have been looking for that hose for ages (mine is split as well) and I do not know what part number is or how to order it. Any help would be greatly appreciated! Thanks!

 

[John202020]

Hi. I have been looking for that hose for ages (mine is split as well) and I do not know what part number is or how to order it. Any help would be greatly appreciated! Thanks!

Pardon our interruption...

Though if you know the inner and outer dia, just buy 1m of silicone hose from Ebay?

Silicone Vacuum Vac Hose Pipe Tube 3mm 4mm 5mm 6mm 8mm 9mm 10mm 13mm 16mm 19mm | eBay UK

It is a high gloss durable finish that matches the rest of our silicone hose range and is just as corrosion resistant and temperature resistant. Vaccum tubing sizes 3mm to 10mm. This enables our product to be in constant use without fear of warping or deterioration.

www.ebay.co.uk

 

[Bodisan]

Pardon our interruption...

Though if you know the inner and outer dia, just buy 1m of silicone hose from Ebay?

Silicone Vacuum Vac Hose Pipe Tube 3mm 4mm 5mm 6mm 8mm 9mm 10mm 13mm 16mm 19mm | eBay UK

It is a high gloss durable finish that matches the rest of our silicone hose range and is just as corrosion resistant and temperature resistant. Vaccum tubing sizes 3mm to 10mm. This enables our product to be in constant use without fear of warping or deterioration.

www.ebay.co.uk

HI again!
Thank you, John202020.
I manage to find the inner diameter (4.8 mm) and I wanted to order some silicone tubes but I thought that because of the vacuum (I think it is vacuum) it may collapse.
So I ordered some reinforced fuel hose (5 mm, should be fine). It will arrive tomorrow.
Thank you very much and have a good day!

 

[GettinBetter]

Can't you just slice 1/2 inch off the end to remove the spit piece, and put it back on?

 

[The Panda Nut]

thanks for that. I was looking at the throttle body thinking it's just four bolts but wanted to check to see if anyone knew where it went first.

Will get a new hose ordered

Buy a length from eBay. MUCH cheaper and you can extend it a fraction which makes removing the airbox easier. I did a guide ion the Panda section which might be worth a quick look. Its laughingly known as the big breather hose.

 

[John202020]

Can't you just slice 1/2 inch off the end to remove the spit piece, and put it back on?

It tends to split halfway along near the bulkhead rather than at the ends

 

[GettinBetter]

It tends to split halfway along near the bulkhead rather than at the ends

Ah ok, I see.

 

[Cinquecento90]

I'm attempting the very same repair myself, however the spigot attaching the breather hose has been pulled off in its entirety from the air filter box and left a hole where the spigot used to be.

To resolve this I'm going to attempt the method Jernas outlined in the following thread:

1.2 Breather Pipe Fixes | FIAT 500 (2007+)

Dear all, For those with breather pipe problems like splits and broken pipe fixing, the repair is relatively cheap and simple (~£5 for the common split breather pipe!). Firstly, when I replaced my spark plugs I took off the airfilter box and the small diameter breather pipe snapped off...

www.fiatforum.com

Upon inspecting the smaller diameter hose that used to connect here - it appeared to be split/cracking and the snapped off spigot is fused into the end so I think the entire hose needs replacing.

@Bodisan - How did you get on with the 5mm reinforced fuel hose? I've read that the manifold end is closer to 8mm - so did you have any trouble attaching the 5mm to this end?

Can anyone recommend the right diameter / type of hose to replace this and also advise on where this joins at the other (non-airbox) end?

E.g. does the throttle body need removing to access the other end of the hose?

 

[John202020]

E.g. does the throttle body need removing to access the other end of the hose?

No you can do it by feel
If the spigot has snapped off it is possible to glue back on but not easy, a simpler solution is a 5mm pipe joining piece, drill the box and glue in place

https://www.ebay.co.uk/itm/133052308194?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=7i-6aJATQPq&sssrc=4429486&ssuid=US5rzkR6SUW&var=&widget_ver=artemis&media=COPY

 

[Bodisan]

I'm attempting the very same repair myself, however the spigot attaching the breather hose has been pulled off in its entirety from the air filter box and left a hole where the spigot used to be.

To resolve this I'm going to attempt the method Jernas outlined in the following thread:

1.2 Breather Pipe Fixes | FIAT 500 (2007+)

Dear all, For those with breather pipe problems like splits and broken pipe fixing, the repair is relatively cheap and simple (~£5 for the common split breather pipe!). Firstly, when I replaced my spark plugs I took off the airfilter box and the small diameter breather pipe snapped off...

www.fiatforum.com

Upon inspecting the smaller diameter hose that used to connect here - it appeared to be split/cracking and the snapped off spigot is fused into the end so I think the entire hose needs replacing.

@Bodisan - How did you get on with the 5mm reinforced fuel hose? I've read that the manifold end is closer to 8mm - so did you have any trouble attaching the 5mm to this end?

Can anyone recommend the right diameter / type of hose to replace this and also advise on where this joins at the other (non-airbox) end?

E.g. does the throttle body need removing to access the other end of the hose?

Hi and sorry for the late reply.
The hose was a perfect fit, the engine noise changed after replacing it. Bought it from Amazon, it was 7 pounds for 1m. I bought a 5 mm dia, but 6 & 8 are also available. The brand I bought was called Hanibos, fuel hose.
Hope this helps, if there is anything I can do, please let me know.

Have a nice day!

 

[Cinquecento90]

Does anyone know if it's possible to remove the throttle body (via the 4 bolts and electrical connector ) for easier cleaning without having to inititate any kind of re-learn procedure when re-attaching it once cleaned?

 

[Peterm1000]

Does anyone know if it's possible to remove the throttle body (via the 4 bolts and electrical connector ) for easier cleaning without having to inititate any kind of re-learn procedure when re-attaching it once cleaned?

Yes and Yes Done it many times.

 

[Cinquecento90]

Pleased to report I carried out the repair today (including fully cleaning the rather oily throttle body) and the car is now running very smoothly. Let's hope this solves my long-running Engine Management Light issues!