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Found Cause of:Y09 CRF450R sputtering 1x/lap under hard acceleration

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Posted by: Spokes574---------------------

I posted several weeks ago an issue with my new crf sputtering after hard acceleration; felt like was running out of gass. I researched and found that this is a common problem with the new crf fuel pump filter getting clogged. Honda even has a service bulliten on it for the machanics. Instead of buying a fuel pump, honda now has the fuel pump filter rebuild kit for $35 it includes filter, and the 3 orings you will need. Note the filter is the size of a tea bag in the shape of a heart.

But what was interesting was the cause of my filter clogging. It turns out that my Gas Tank Foam that I use to prevent gas sloshing is breaking down. The filter was deep black(the color of my foam) and there was black particals all over the fuel pump. I put the new filter in and took out my Gas Tank Foam. So be ware if you use the gas tank foam take it out.
I emailed the vendor and they never emailed me back.

A typically dirty fuel pump filter should be a dark brown color.
I took over 2 wks to get the rebuild kit.

Bike runs great again. I did not notice any power increase or easier starting; but atleast it runs reliably again.

Spokes572
California


Posted by: IndyMX---------------------

Huh.. I was wondering how long it would take to hear of a case of that tank foam breaking down in the gas..

I wonder how much longer that company will be around. Not long I suspect.


Posted by: Matt90GT---------------------

Here is the OEM part number for the filter: 06160-MEN-A30

You also should strain the gas with a product like this:

http://www.crfstuff.com/prfufi.html


Posted by: Spokes574---------------------

I did purchase the Gas Tank Stain filter screen ~$34 from the CRFstuff website
And I got the part number off of another Forum for the entire kit (3 gaskets and 1 tea bag heart shape fuel filter). It was quite easy process.
I will assume now that I have the gas filter screen and the slosh foam removed from my tank I should not have an issue anymore!

Spokes572
Pleasanton, CA


Posted by: Tdoorn199---------------------

i was thinking about buying gas tank foam and was wondering what brand you bought and how long it took to break down.


Posted by: DEANSFASTWAY---------------------

alot of injectors have tiny screens on them as well ive seen them clog on suzuki street bikes


Posted by: Solid State---------------------

Quote:
Originally Posted by Spokes574
I did purchase the Gas Tank Stain filter screen ~$34 from the CRFstuff website...


CRFSTUFF is a fine organization. I ordered the same part from the manufacturer at PROFILL-AUSTRALIA. Cost was $27 including shiping anywhere in the world. Ordered one last week for the FI Honda.



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