[JRWalker]

injector cleaner probably work ok. as far as the whine is concerned, my strom been doing that for the past 70k. still works ok for me. if it aint broke, dont fix it. g-luck with your bike and ride safe.

 

[greywolf]

The usual cause of noise is the high pressure filter causing a valve noise. There hasn't been a lot of success reported in cleaning but an external bypass filter is popular. A check of the pump is at Fuel flow check and the bypass is at External Fuel Filter modification

The filter is inside part #2.

 

[Black Lab]

It may be helpful to read the below links. However, the work is being done on a 2007 DL-650 fuel pump.

http://www.stromtrooper.com/669203-post191.html

http://www.stromtrooper.com/669204-post192.html

 

[greywolf]

The '05 pump is an entirely different beast from the '07 and later pump though.

 

[kamloopsal]

The usual cause of noise is the high pressure filter causing a valve noise. There hasn't been a lot of success reported in cleaning but an external bypass filter is popular. A check of the pump is at Fuel flow check and the bypass is at External Fuel Filter modification

Thanks Pat! I knew I'd seen that bypass mod somewhere, I'm going to give it a go.

Thanks also to the others who replied.

Al

 

[Black Lab]

The '05 pump is an entirely different beast from the '07 and later pump though.

I added my caveat to my post in hopes that you would confirm whether there was a difference or not.

You truly are an incredible person, Pat. Thank you again for all that you do for us here on the forum, (and in our garages!).


Barry

 

[Scott E. Bonds]

I backflushed my filter in a solvent wash tank. Got a fair mount of reddish crap out and put it back together. Runs great again.

Next time it plays this trick on me, I will put a new one in or bypass it. But cleaning did work for me....I hope to never know for how long. So far 8,000 miles.

The pitch of the "whine" changed a little on mine when the filter was cleaned.

The main symptom with mine was it fell on its face like it was starving for fuel above 7,000 or so rpm. Ran wonderful below that rpm, just could not suck enough juice in.

 

[kamloopsal]

Well, I did it! Total cost 34CAD (that's about 80USD today :thumbup.

Only re-filled the tank to about 1/4 before starting - zero whine from the tank!
Filled the tank and went for a ride. Low speed jerking, that I was blaming on the throttle bodies being out of sync, has gone. Popping in my aftermarket exhaust when backing off the throttle, has gone. Engine still revs freely to red-line in lower gears.
I'm a happy camper!!

Decided to go for the easy access, longer hose, option after talking to a local fuel injection guy who assured me it wouldn't be a problem.

 

[Black Lab]

Well, I did it! Total cost 34CAD (that's about 80USD today :thumbup.

Nicely done with good photographs. Could you be talked into creating a "How To" for the forum that includes photos?

B.L.

 

[greywolf]

It's good to see proper fuel injection rated hose clamps being used.

 

[kamloopsal]

Could you be talked into creating a "How To" for the forum that includes photos?

Thanks, but it has already been done at the link Greywolf provided.
External Fuel Filter modification lots of good info.

I don't think linking to this breaks any Stromtrooper rules?