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Slight whiff of petrol in the cabin
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Author:  Smiffy [ February 8th, 2011, 11:00 am ]
Post subject:  Slight whiff of petrol in the cabin

Took a day off and went to see a mate in Hay on Wye yesterday and had loads of fun chucking the snail round the country roads, particularly on the way back in the dark.

One thing, though: I got a distinct whiff of petrol and oil in the cabin. I've checked the exhaust clamps and they're all tight and snug... What would be causing the smell to enter the cabin?

Author:  Sean [ February 8th, 2011, 11:05 am ]
Post subject:  Re: Slight whiff of petrol in the cabin

leaking petrol? :?


check rubbery bits, float level and carb gasket
if you pressed the accelerator pedal once you had stopped and the engine was still hot it smells

Author:  2CViking [ February 8th, 2011, 11:12 am ]
Post subject:  Re: Slight whiff of petrol in the cabin

Fumes psuhed out between the barrel and head.

Author:  Smiffy [ February 8th, 2011, 12:06 pm ]
Post subject:  Re: Slight whiff of petrol in the cabin

Sean wrote:
leaking petrol? :?
check rubbery bits, float level and carb gasket
if you pressed the accelerator pedal once you had stopped and the engine was still hot it smells

Checked for leaks, and I'm pretty sure all is OK.

2CViking wrote:
Fumes psuhed out between the barrel and head.

How can I check for this, and what is the remedy?

Author:  Old-Nail [ February 8th, 2011, 12:10 pm ]
Post subject:  Re: Slight whiff of petrol in the cabin

Tighten your head bolts?

Author:  twofifty AZU [ February 8th, 2011, 12:45 pm ]
Post subject:  Re: Slight whiff of petrol in the cabin

Smiffy wrote:
Sean wrote:
leaking petrol? :?
check rubbery bits, float level and carb gasket
if you pressed the accelerator pedal once you had stopped and the engine was still hot it smells

Checked for leaks, and I'm pretty sure all is OK.

2CViking wrote:
Fumes psuhed out between the barrel and head.

How can I check for this, and what is the remedy?


The real remedy is to lap the joint between the head and the barrel. However a leaking head joint shouldn't smell of raw petrol, it has a sickly sweet exhaust smell.

There is a rubber pipe on top of the tank that is prone to failing (but normally causes bad starting). Also have a look at the fuel pipe joints themselves, look if the float bowl is trying to fall off. Petrol leaks will leave tell tale stains.

Author:  Smiffy [ February 8th, 2011, 3:31 pm ]
Post subject:  Re: Slight whiff of petrol in the cabin

twofifty AZU wrote:
...it has a sickly sweet exhaust smell.


That's a better description of the smell than my unimaginative "petrol in the cabin". In which case gents, I'm pretty sure we have our diagnosis!

Now, how would I "lap" the joint between the head and the barrel?

Author:  Sean [ February 8th, 2011, 3:46 pm ]
Post subject:  Re: Slight whiff of petrol in the cabin

Smiffy wrote:
In which case gents, I'm pretty sure we have our diagnosis!


Hold on a minute there bro!

James hasn't paid a visit yet ;)

Sean
(we loves ya really JW :lol: )

Author:  Smiffy [ February 8th, 2011, 4:02 pm ]
Post subject:  Re: Slight whiff of petrol in the cabin

Fair point!

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