Gentlemen,
I've spotted some corrosion in a petrol pipe under a car I'm prepping for its MOT. I believe it's gone right through as I can detect the faint whiff of fuel in that area. Question is, are plastic petrol hoses allowed under a vehicle? I plan on replacing just the corroded section, not the whole length of the line and this would be much easier to do with flexible plastic fuel hose.
It usually will have damp look along the pipe, unless its spotlessly clean.
Plastic pipe were certainly allowed in the past under the car, and haven't heard of any change in rules.
Reinforced rubber high pressure fuel injection hose the whole way from tank pump outlet to the fuel filter. Cable tie it to the old pipe at about 20cm intervals. Most motor factors have a reel on stock and sell by the meter. Usual size is 8mm.
... and be very careful when chopping out the corroded section; don't use a die grinder for instance!
I never considered that anyone would attack the old hard line. There is usually a bit of rubber at each end to join it to tank and filter. Just blow out the remaining fuel into a fuel can.
I believe I've found the safest way to cut through the old metal pipe by using a plumber's tool like this one:
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