Petrol fumes in cabin under hard acceleration

[ZBX]

Hi all, why would I be getting petrol fumes in my cabin under hard acceleration?

It seems to be coming through the air con vents.

I've found my exhaust has a leak, but this is after the manifold, so can't see how fumes are getting into the cabin.

There isn't a manifold leak so wondering if it could be coming from somewhere around the engine bay.

Thanks

[s1962a]

Which car is this?

We had a diesel Cayenne that did this. Turned out to be bad DPF Injector seals.

[ZBX]

Sorry it's a 306 GTI-6.

[Silverbullet767]

Could be any number of things, anything that handles fuel, make sure they're tight. Fuel filter, fuel lines, spark plugs etc.

[ZBX]

Silverbullet767 said:

Could be any number of things, anything that handles fuel, make sure they're tight. Fuel filter, fuel lines, spark plugs etc.

Ok thanks, I need to find a specialist who can diagnose this sort of problem.

[E-bmw]

ZBX said:

Hi all, why would I be getting petrol fumes in my cabin under hard acceleration?

It seems to be coming through the air con vents.

I've found my exhaust has a leak, but this is after the manifold, so can't see how fumes are getting into the cabin.

There isn't a manifold leak so wondering if it could be coming from somewhere around the engine bay.

Thanks

OK, lets try again.

Are you getting petrol fumes or exhaust fumes, you mention both?

[ZBX]

E-bmw said:

OK, lets try again.

Are you getting petrol fumes or exhaust fumes, you mention both?

Exhaust fumes are petrol fumes aren't they?

I've taken it to a mechanic, and they found it's the centre section, has a massive hole in it, blowing directly upwards!

[Vsix and Vtec]

Exhaust fumes suggests its burnt fuel. Petrol fumes suggests its unburnt fuel. The distinction can make a fairly big difference in advice. There's not much point telling you to look for a petrol leak or check the injectors if your problem is actually a cracked exhaust manifold.

[cuprabob]

ZBX said:

E-bmw said:

OK, lets try again.

Are you getting petrol fumes or exhaust fumes, you mention both?

Exhaust fumes are petrol fumes aren't they?

I've taken it to a mechanic, and they found it's the centre section, has a massive hole in it, blowing directly upwards!

So, it's exhaust fumes then

[E-bmw]

ZBX said:

E-bmw said:

OK, lets try again.

Are you getting petrol fumes or exhaust fumes, you mention both?

Exhaust fumes are petrol fumes aren't they?

Er..... No.

Petrol fumes are the vapours that are given off by petrol and are EXTREMELY FLAMMABLE.

Exhaust fumes are the products of combustion in gaseous form that are then sent down the exhaust pipe, they are not flammable but are EXTREMELY TOXIC.

[paintman]

The 307s have a large plastic canister inside the top of the front offside wing that deals with petrol fume emissions.
It should recirculate the fumes into the intake but if it is defective they exit it via a short stub pipe on the canister causing a strong smell of petrol to enter the car via the vents.
Peugeot part number 4228AK154
Need to remove the o/s/f wheel & arch liner to access it.

A very quick google brings this up which speak of a 'charcoal canister' so perhaps the 306 GTi has something similar?
https://www.306gti6.com/forum/showthread.php?id=15...
https://www.306gti6.com/forum/showthread.php?id=15...

Probably worth you asking for advice on that forum.

[ZBX]

E-bmw said:

Er..... No.

Petrol fumes are the vapours that are given off by petrol and are EXTREMELY FLAMMABLE.

Exhaust fumes are the products of combustion in gaseous form that are then sent down the exhaust pipe, they are not flammable but are EXTREMELY TOXIC.

Ok understood, thanks.