Leaking fuel cap
Posted: Fri Jun 17, 2005 3:32 pm
When my Plus 2 returned to the road a few weeks back it quickly became apparent that all was not well with the fuel cap. Every time I went round a corner it was dumping fuel all over the new paintwork that I'd laboriously applied last summer. At Castle Combe the other weekend it seemed that I wasn't the only one with the problem, with a number of other plus 2's having dirty brown stains around to fuel filler. I worked out that the fuel was getting out through the breather holes in the cap.
Anyway, after trying a couple of unsuccessful temporary fixes including a bung in the filler neck(!) I think that I've finally cracked it. I've fitted a non- return breather valve into the filler neck and sealed up the breather holes in the cap with a couple of blobs of solder.
First impressions are good with not a drop having been spilt so far!
If anyone else is interested in doing the same the part you need is tank breather valve part number TBV45 from these people:
http://www.thinkauto.com/acatalog/intro.html
You just need to remove the filler neck, drill an 8mm hole to fit the valve and then solder up the breather holes in the cap. Make sure all of the rubber parts in the cap are in good condition while you're there. As a belt and braces fix I'm going to fit a pipe to the breather valve, loop it high up in the boot before exiting it though a hole in the boot floor.
Worked for me!
Anyway, after trying a couple of unsuccessful temporary fixes including a bung in the filler neck(!) I think that I've finally cracked it. I've fitted a non- return breather valve into the filler neck and sealed up the breather holes in the cap with a couple of blobs of solder.
First impressions are good with not a drop having been spilt so far!
If anyone else is interested in doing the same the part you need is tank breather valve part number TBV45 from these people:
http://www.thinkauto.com/acatalog/intro.html
You just need to remove the filler neck, drill an 8mm hole to fit the valve and then solder up the breather holes in the cap. Make sure all of the rubber parts in the cap are in good condition while you're there. As a belt and braces fix I'm going to fit a pipe to the breather valve, loop it high up in the boot before exiting it though a hole in the boot floor.
Worked for me!