Petrol fuel smell in cabin whilst stationary w202 c180

1993-Present: C200 CDI, C220 CDI, C270 CDI, C180, C200 Kompressor, C230 Kompressor, C220, C230, C280, C300 C350, CGI & CDI BlueEfficiency variants
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Dlawrence103
Dernburg Wagon
Posts: 7
Joined: Sat 11 Feb, 2017 12:54 am
Model you own: w202

Petrol fuel smell in cabin whilst stationary w202 c180

Post by Dlawrence103 » Thu 15 Jun, 2017 8:14 pm

Hi guys,

I'm having dramas with my w202 1997 c180.

I get a strong fuel smell in the cabin through the air vents when I come to a stop, it's not there whilst driving.
I've tried it with air conditioning on, air con off, hot air, cold air, recirculating on/off and it still produces the same fuel smell

I have had it on the ramp at my local mechanics and all the fuel lines, fuel tank, fuel pump/filter, injectors look ok.

We pressurised the fuel system with the smoke machine and it only produced smoke from the vent in the left hand rear wheel well, which seemed correct.

I notice the fuel line goes into/through the air conditioning in the engine bay, I was wondering if this could be leaking internally?

I have recently had the cabin heating water pipes unblanked/reconnected and was wondering if this could somehow add fuel smells into the cabin?

Anyone have any ideas?

Thanks guys
Dave Lawrence
Current drives
2004 Landcruiser V8
1997 C180

Past Drives
3 x Landrover Defenders
BMW 735i
Golf GTI MK1
VW Corrado
306 GTI
106 GTI
300zx TT
Celica GT4
Leon Curpra R

User avatar
70499
M-100
Posts: 742
Joined: Wed 08 Nov, 2006 7:40 pm
Model you own: L319
Location: Perth - Neskaupstaður

Re: Petrol fuel smell in cabin whilst stationary w202 c180

Post by 70499 » Thu 15 Jun, 2017 9:45 pm

Just a thought, although this hose gets overlooked. Check your breather, over-flow hose from your fuel fill inlet. They do like to weep as they are tucked away out of sight and are now heading towards being a 20 year old piece of rubber.
Brad.

1958 L319.

User avatar
Ivanerrol
Mercedes Demigod
Posts: 5557
Joined: Sat 12 May, 2007 3:21 pm
Model you own: w204
Location: Melbourne

Re: Petrol fuel smell in cabin whilst stationary w202 c180

Post by Ivanerrol » Fri 16 Jun, 2017 7:48 pm

You will need to remove the plastic cover in the wheel arch to see the return pipes.
Quite common for them to crack, leak and smell in overseas countries where cold weather is an issue.

The fresh air circulation outlet for the interior is located in the rear of the wheel well. Flows past the filler pipe.
You need to remove the boot plastic liner so see this and the relevant piping.

This area is often the source of fuel and exhaust smell issues
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Dlawrence103
Dernburg Wagon
Posts: 7
Joined: Sat 11 Feb, 2017 12:54 am
Model you own: w202

Re: Petrol fuel smell in cabin whilst stationary w202 c180

Post by Dlawrence103 » Sat 17 Jun, 2017 3:22 pm

Thanks Guys, I will take it apart and have a look on my next days off.
Dave Lawrence
Current drives
2004 Landcruiser V8
1997 C180

Past Drives
3 x Landrover Defenders
BMW 735i
Golf GTI MK1
VW Corrado
306 GTI
106 GTI
300zx TT
Celica GT4
Leon Curpra R

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