G650GS Sertao Fuel Pump Failed

At 8.5 years old and some 75,000km, the fuel pump on my G650GS Sertao failed. The engine died from fuel starvation and left me stranded some 500m from home. As I was a short distance away, I decided to push the bike home.

The GS-911 confirmed my suspicion of a fuel pump failure.

While at home, I whipped out my trusty GS-911 diagnostic tool an read the ECU for fault codes. And as suspected, the Sertao suffered from the infamous fuel pump failure. It is one of these times where I thought a carburated bike may actually not be that bad an idea after all!

A quick check with my local BMW dealer also confirmed my fears – BMW charges an arm and a leg for a fuel pump replacement. I was quoted S$611 +GST for the entire assembly. And that hasn’t included the cost of labour. Gosh!

BMW does not sell the fuel pump motor. It comes in a complete assembly (item #4).

Being the cheapo as I was, I wasn’t willing to pay the BMW tax on the fuel pump. Also, I recall seeing pump motors for the 650GS being sold on eBay, AliExpress and many other websites – for cheap too!

Less than S$30 from Shopee – delivered to my doorstep too!

And so with a little bit of research, I found a Shopee seller who carried the pump motor for the Sertao – all for less than $30 bucks! That’s like less than 5% of the cost of an original BMW pump!

The pump motor arrived within about a week of placing my order! Surprise!
Gotta drain the fuel first.
The removed fuel pump assembly. The pump motor in housed inside the white plastic assembly.
Stripping down the old pump. The white plastic assembly is suspended by 3 rubber blocks.
Old pump out.

And after installing the new pump motor and putting it all back together, I started the bike and it roared to life again in a familiar purr! Success!

Total spent – $30 (including 2 pcs of stainless steel hose clamps.)

What the dealership would have cost – $700 including labour.

I’m a happy camper!

2 thoughts on “G650GS Sertao Fuel Pump Failed”

  1. Well done indeed. From the look of it your 650 is the Rotax version.

    I had endless issues with my new one while still under warranty.
    The final killer was when they had to replace the entire wiring loom.
    I traded it in for the *real* BMW 650 – which I think was actually a downrated 750.

    I now have a brand new R1250GS Adventure TE Triple Black.
    I had my previous 18month old 1250 stolen. I got such a good insurance payment, I only had to pay about £3,000 for the new bike. All new BMWs now come with a Datatool Stealth 5 tracker.

    1. Yeah – mine’s the single cylinder version based on the Rotax engine. Some sources seem to suggest that the later versions (likely including mine) are assembled by Loncin in China. Nonetheless, the engine has been rock solid reliable so far.

      Have fun with your new R1250GSA! Admittedly, I do miss the boxer engine. Haven’t decided if I should go back to the 1200/1250GS(A)’s again… decisions, decisions, decisions…

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