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Old 03-19-2014, 05:34 AM   #16
stimmer6253472 OP
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Quote:
Originally Posted by bikyto View Post
That doesn't sound like the pump. It sounds like your butterflies that are sticking. Check them and the ISC as well.

The pump noise in the background sounds normal.
Thanks for the reply but a couple questions.... What is ISC? and would my butterflys sticking cause my bike not to fire?
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Old 03-19-2014, 05:37 AM   #17
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Quote:
Originally Posted by stimmer6253472 View Post
Thanks for the reply but a couple questions.... What is ISC? and would my butterflys sticking cause my bike not to fire?
If the butterflies don't open, very little air gets in. Additionally, it's hard to speculate on how the ECU reads the fault.
ISC, idle speed sensor. It could also mess with the bike not firing up/not properly.

But the clicking sounds seem to be a gearing click and not related to the fuel pump IMO. Your butterflies should open fully when you turn the ignition on.
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Old 03-19-2014, 05:58 AM   #18
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Quote:
Originally Posted by bikyto View Post
That doesn't sound like the pump. It sounds like your butterflies that are sticking. Check them and the ISC as well.

The pump noise in the background sounds normal.
One other thing is I do see my butterflies open occasionally. Not sure exactly when but they have opened while turning over. So at least I know they can open by themselves. I will start reading up on the ISC.
Thanks,
Jim
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Old 03-24-2014, 05:26 PM   #19
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I got my fuel pump rebuild kit today. Not sure if that is my problem at this point but I guess it probably needs it anyways. So I am going to rebuild that and if I have the same problem I will point my attention to the ISC I guess.

Unless someone else has a better idea???

I would still like to know for sure how to tell if fuel is pumping out of the injectors. Now is when I miss carbs.
Thanks,
Jim
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Old 03-26-2014, 12:31 AM   #20
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Hook up a computer and say injector test.. like to see you do that to a carb!!

Just open up the pump if you think that it sounds funny, who knows a fuel seal could have burst in the tank leaving no pressure.

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Old 04-13-2014, 10:38 AM   #21
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I finally got around to rebuilding the pump (replacing gaskets, filters, etc...) and of course no difference. I wasn't holding out much hope that it would work but I figured with over 30k miles the filters probably needed replacing anyways.
Oh well... on to the next thing. Good thing I have a back up bike.
I am still all ears.
Thanks,
Jim
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Old 04-30-2014, 06:19 PM   #22
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TuneECU

I hooked up TuneECU to it today and ran through all of the tests. Here are the results. No error codes... Anyone ever used TuneECU to try and troubleshoot a problem? I seem to hear all of the noises I should during the tests. The butterfly's open and shut properly during that test.

I have already missed out on several good riding weekends dicking with this and ordering stuff to troubleshoot. Maybe I need to quit being cheap and take it somewhere.

Any info would be appreciated.
Thx,
Jim

Initialization.... ECU connected.
Authentification... Access allowed.
ECU Type : 610.41.031.100
Serial 939465
Software Checksum : 7802
Map : KM601AK0704501 (07045)
Test Tachometer... done
Test Fuel Pump... done
Test Idle Speed Control... done
Test SAI... done
Test 2nd Throttle... done
Test Ignition Coil... (1)Test Ignition Coil... (2) done
Test Injector... (1)Test Injector... (2) done
Unsupported Test/Adjust

http://www.tuneecu.com/TuneECU_En/tests.html
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Old 04-30-2014, 06:40 PM   #23
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Simple things---gas in tank good? No water? Are you sure fuel is getting to the throttle bodies? Try starting/running with air filter off. What can you see as engine is cranked? Butterflies open? Signs of fuel reaching throttle bodies? Does it start spraying starting fluid in? Check whatever work you have done--crimped fuel line? Problems with pump/filter assembly? Wiring to pump?

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Old 04-30-2014, 07:12 PM   #24
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Thanks for the reply.

Tanks have been drained and new fuel filters with fresh gas. However, the bike sat from mid Nov to mid Jan with gas in it. When I tried to start in Jan my problem started. So maybe something is gummed up or clogged outside of the tank??

No idea if fuel is getting to the throttle bodies but the butterflies appear to open normally and it will run for a few seconds if I spray starter fluid in the throttle bodies. I just went down and took off the air filter and turned it over. I didn't see anything in the throttle bodies shooting fuel. Should I have? Went to get a flashlight and by then the bikes battery was dead so I will need to leave it on the charger overnight and then check again if I see anything happening in the throttle bodies. I did run the tuneecu injector test and I heard it sound like they were working.

I haven't done any work to it in years (emission stuff removed) Nothing should be crimped. In fact I have the right tank removed along with the covers up top where the vents run. The wiring to the pump looks good and it appears to pass all of the tuneecu tests.

Jim
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Old 04-30-2014, 07:33 PM   #25
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It does start to sound like it is a problem from the pump to the injectors. Having rebuilt my pump and changed filters, I know that it is possible to be off on the assembly of the pump.

Additionally, the fuel line disconnect can be a problem--not passing fuel.

I understand, but have never disected an injector, that there is a small "micro filter" in the injector. I have had problems with a leaking injector on a higher mileage 990. In that instance injector cleaner seemed to clear the problem. But for a bike that doesn't run, getting cleaner to the injector is a problem. You can do a DIY injector cleaning, removing the injectors and putting voltage to the injector to open it for cleaning. For my $ I will send the injectors to a professional for a real, pressurized cleaning.

Good luck
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Old 05-01-2014, 02:06 AM   #26
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Could it be petcocks are off?

Sounds like no fuel is passing. You could try the quick release connector pressing the white inner tube with your finger while priming and get some fuel spraying out.
Cheers

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Old 05-01-2014, 02:21 PM   #27
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did you try to back flush the pump? it may surprise you what you may find in it

take it out of the tank, prepare a small canister or basin full of clean fuel added with injector cleaning product, wynns is my favourite, let it soak for some time

now, this is dagerous but esy to do

without making anything produce any spark, connect the pump to a battery inverting the poles, and make it work submerged in the petrol, this will dislodge any sticking stuf tham may hav prevented the pump to work properly
if the pump is submerged there will be no sparks, and just make sure the battery is far away from the basin :)

other trhick is to connect a hoose to the out-end and make it suck up from a canister into another canister... make sure it will work for only some moments, no more tan one minute or it may overheat!!

while you are letting the pump soak, check the pressure regulator, fungus-shaped thing sticking at the top of the pum it self, it's a spring loaded valve, nosthin more, but it must be closed not clogged or blocked

if you can blow air with your mouth trhough it ,it is blocked-open.. no good, it will allow petrol to flow back to the tank instead or going to injectors and so no pressure

btw.... that's a robbery the price they made you pay for the blody original ktm filterset.....



keep us posted

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Old 05-01-2014, 06:41 PM   #28
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Whenever pump and filter cost comes up, I mention Gefr in the Vendors section. I have been running his pump and filters for 7-8000 miles now with no issue. A fraction of the cost from KTM

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