new petrol cap leaking

[rocket]

Fitted new cap last week,old one was fine but wanted a locking one..new one leaks when tank is full..im not pleased with fit in general..anyone any ideas on this?

[robcall]

Is a new thread required for the memory impaired

[nebogipfel]

The only thing I can think of which may help is to bend the catch down slightly to make it close a bit tighter. The one I bought for my car (non locking) was fine but the quality of a lot of the replacement parts seems very variable.

If you can send it back to the supplier, it might be worth trying one from Norton spares supplier (60's 70's Commando) Perhaps less likely to leak?

Sorry I know it's not much help

As an aside, and FWIW I would have retained the non locking cap. The problem is, if the b*ggers want your petrol they're gonna take it and if it's a locking cap it's no real deterent and they will probably damage your shell and paintwork in the process.

[oldokie]

A bit of well placed fine screen in the filler neck keeps out the hoses the b*ggers carry!

[Robbie693]

It may not be the cap fit that is causing the leak - my locking cap had a vent hole in the seal carrier which caused the fuel to spew out on right hand bends.

I filled the hole with solder and now it's fine.

Just a suggestion...