Author Topic: 701 Fuel Pump? (Read 1258 times)

BiG DoM · « **on:** October 28, 2018, 11:56:03 am »

Is there any consensus on this issue? Should one replace as a precaution or just fit the Guglatech kit. If the latter should one do all three filters (filler, pump bag, and remove pump screen and fit external filter?

Amsterdam · « **Reply #1 on:** October 28, 2018, 12:05:08 pm »

Let me go first. Personally I have not replaced the pump. I have removed the small in tank filter after the pump but left the screen in place. Installed a large external filter.

There is merit in the Guglatech (if it truly works as advertised).

SparkMark · « **Reply #2 on:** October 28, 2018, 09:27:45 pm »

I change the in tank filter every 5000 km's. I run guglatech filters, and a aerospace (10 micron) filter before the injector.

BiG DoM · « **Reply #3 on:** October 29, 2018, 03:51:40 am »

Quote from: SparkMark on October 28, 2018, 09:27:45 pm

I change the in tank filter every 5000 km's. I run guglatech filters, and a aerospace (10 micron) filter before the injector.

Did you consider the Guglatech Tea Bag pump filter? Anyone here fitted one? What aerospace filter did you fit, from where? I know the Golan filters are good but costly.

SparkMark · « **Reply #4 on:** October 29, 2018, 10:43:47 am »

Hey Dom,

Didn't actually know there was a filter for the pump (bar the STD one).

Yes, its the Golan. Imported from Rally Raid. Like you say, expensive, but better than being stuck.

BiG DoM · « **Reply #5 on:** October 29, 2018, 11:23:44 am »

Quote from: SparkMark on October 29, 2018, 10:43:47 am

Hey Dom,

Didn't actually know there was a filter for the pump (bar the STD one).

Yes, its the Golan. Imported from Rally Raid. Like you say, expensive, but better than being stuck.

Ok got a quick reply from Riaan at Guglatech SA after enquiring this morning about a full kit fix:

"The 701 doesn't have a Teabag it has a mesh strainer and an in-line stupid mini filter, we have all the parts to do the modification.

MRT093
MRT099
M27106

Remember, without the neck filtering any kind of modification will be useless.

701 and KTM 690 after 2010 share the same fuel system platform.

I have received the 701 stock on Friday I will send you a quote shortly.

Regards

w@nted · « **Reply #6 on:** October 29, 2018, 12:37:19 pm »

Glad to hear that stock has arrived...

BuRP · « **Reply #7 on:** October 29, 2018, 01:46:04 pm »

My hunch (reinforced by having seen quite a few RR's in remote places) is that water in the tank mainly stuffs up our pumps.
Jerrycan-filling, or worse, coke-bottle fuelstops we all know, and we'd not think twice when we had carburettors... but with EFI these days things ain't that simple anymore.
The std filtering is probably good enough when you live in Europe, strictly controlled enviro-tankstations galore, but here it's a tad different.
Zero personal experience yet but the Guglatech socks seem to be the ticket: they stop water getting into the tank plus they filter out very small fines.
I presume you'll have to take them out to clean from time to time but that's a minor hassle, anyone obviously will prefer doing this than swapping a fuelpump somewhere out in the field.
With the 701 (and I reckon the 690 also) one has to hold the filler nozzle oneself to prevent jamming it in until it rests on the tank's bottom, in doing so possibly damaging the sock - but I'll do that with a smile.

BiG DoM · « **Reply #8 on:** October 29, 2018, 02:53:38 pm »

Yes and I always do it myself anyway as otherwise you have petrol everywhere - learned this long ago. Also with BMW's you can drill a small hole in the filler neck as an extra higher breather which allows you to squeeze as much as a half litre more petrol in a tank ... gas jockeys do not understand this.

w@nted · « **Reply #9 on:** October 29, 2018, 03:45:33 pm »

Quote from: SparkMark on October 28, 2018, 09:27:45 pm

I change the in tank filter every 5000 km's. I run guglatech filters, and a aerospace (10 micron) filter before the injector.

Where is the best place to buy the in tank filter on the discharge of the pump?

SparkMark · « **Reply #10 on:** October 29, 2018, 05:44:19 pm »

KTM or E2R ... its a little service kit.

BiG DoM · « **Reply #11 on:** November 20, 2018, 06:31:04 pm »

Quote from: w@nted on October 29, 2018, 03:45:33 pm

Quote from: SparkMark on October 28, 2018, 09:27:45 pm
I change the in tank filter every 5000 km's. I run guglatech filters, and a aerospace (10 micron) filter before the injector.

Where is the best place to buy the in tank filter on the discharge of the pump?

One should eliminate this - Guglatech actually makes an elimination kit for something like R750 which is daylight robbery as all it is, is a small brass barbed straight connector and two worm clips. Source one locally or use a small piece of pipe. If one runs an external filter this is unnecessary and what blocks and causes the pump to overheat and fail.

Mayhem · « **Reply #12 on:** May 25, 2019, 06:59:57 pm »

Did a sleep over ride to Oasis a few weeks ago and on the way home and bike died (bottom of Bainskloof pass). Had to trailer it home. Was sure it was blocked fuel filter. Pulled the filter and it was about 50%blocked after 2500km. Fitted new filter and still no go. Checked power to the pump and it was live but pump wasn't working. Took the pump to Eddie2race and they confirmed pump u/s. New pump is R 6100.00. They said I still fell under warrenty so pump will be replaced. I have in the meantime bought a aftermarket pump form fuelpeformance for R3k (complete unit just like oem) and it was at my door in 2 days from Jhb. Fitted and bike is back up and running. The nice thing about fuelpeformance pump is that it has a slightly bigger filter. I'll keep the oem pump as a back-up.
Just want to mention that contamination was NOT the cause of pump failure.

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BiG DoM · « **Reply #13 on:** May 25, 2019, 07:29:54 pm »

Quote from: Mayhem on May 25, 2019, 06:59:57 pm

Just want to mention that contamination was NOT the cause of pump failure.

But the pump being forced to work 50% harder could have been ...

Mayhem · « **Reply #14 on:** May 25, 2019, 09:12:50 pm »

Quote from: BiG DoM on May 25, 2019, 07:29:54 pm

Quote from: Mayhem on May 25, 2019, 06:59:57 pm

Just want to mention that contamination was NOT the cause of pump failure.

But the pump being forced to work 50% harder could have been ..

[/quote

Yeh, but it was not fuel contamination but the pump failing causing filter to block...

BiG DoM · « **Reply #15 on:** May 25, 2019, 09:26:44 pm »

Quote from: Mayhem on May 25, 2019, 09:12:50 pm

Quote from: BiG DoM on May 25, 2019, 07:29:54 pm
Quote from: Mayhem on May 25, 2019, 06:59:57 pm

Just want to mention that contamination was NOT the cause of pump failure.

But the pump being forced to work 50% harder could have been ..

[/quote

Yeh, but it was not fuel contamination but the pump failing causing filter to block...

The pump has to pump harder to push the fuel through the 50% blocked filter between the pump and the pressure regulator. I believe this is what makes the pumps fail. The filter gets blocked by the carbon graphite particles deposited off the brushes on the fuel pump motor into the fuel.

Mayhem · « **Reply #16 on:** May 26, 2019, 05:58:17 pm »

That's seems to be correct, so fitting a bigger filter will probably allow the pump to last longer but how long will the brushes hold out if they are wearing excessively?

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BiG DoM · « **Reply #17 on:** May 26, 2019, 08:09:33 pm »

Quote from: Mayhem on May 26, 2019, 05:58:17 pm

That's seems to be correct, so fitting a bigger filter will probably allow the pump to last longer but how long will the brushes hold out if they are wearing excessively?

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I am not sure that the brushes are wearing excessively - it would be really interesting to disassemble your failed one to verify. I have also heard some speculate that the black is pigment leaching from the tank. All I know is that it is blocking the in-tank filter. I have removed mine from the tank, fitted a hose connector and a serviceable aircraft grade Gulan filter externally. Easy to service and check. I also have Guglatech filler filter so believe I am covered.

BiG DoM · « **Reply #18 on:** May 26, 2019, 08:22:55 pm »

This is what my filter looked like at about 3200km when I removed it.

Mayhem · « **Reply #19 on:** May 27, 2019, 08:41:54 am »

Where did you get that filter?
Is it serviceable or do you replace complete filter?

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