Hi all. I've just replaced my walbro 255 pump the previous one failed. Anyways after driving about 6 miles when reversing on the drive the pump was whining very loud. I stopped engine and turned ignition on and off a few times and the pump was still loud. I tried it again after 10 minutes and it sounded normal. Have I bought a duff or copy pump?
Cheers

 

Mine goes through phases of being noticeably loud, too and has been on for two years or so. I plan on replacing the Walbro pump with an alternative at some point.

 

Loads of cheap copies about,where did you buy it from?

 

There is way more fake Walbro pumps on the market than there is genuine ones. Also a lot of them you can barely tell not to be genuine unless you cut them open

 

Look at this on eBay http://www.ebay.co.uk/itm/351601276487

 

That's a link from where I bought it