Fuel filter - Honda Motorcycles - FireBlades.org
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post #1 of 12 Old 01-05-2015, 8:22 PM Thread Starter
 
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Fuel filter

Hi,I've just bought a cbr900 1999 model and I've been looking it over and I see the fuel is gravity fed with no fuel filter.can I put an inline filter between the tank and carbs or will this affect the flow off fuel? Why wouldn't Honda fit a filter to these bikes anyway.
Also my fan doesn't turn on untill 107/108 oC is this not a little high?

Thanks
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post #2 of 12 Old 01-05-2015, 8:40 PM
 
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Re: Fuel filter

We install fuel filters every day. Use the paper element type, it does a finer job of filtering. A clogged filter is the only risk of restriction that would effect how your bike runs, not a clean new one.

Your temp sensor might need replacement. It's a little late coming on. I wire my fans to run on a manual switch.
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post #3 of 12 Old 01-05-2015, 8:56 PM Thread Starter
 
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Re: Fuel filter

Ok cheers any size etc?After I bought the bike I spoke to the guy and he said since he hasn't driven it for a couple off months he would go out a couple times per week and just let it idle untill the fan came on at 108! I don't know why tho ha. Just hope it's not damaged it in anyway as that is hot.
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post #4 of 12 Old 01-05-2015, 9:08 PM
 
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Re: Fuel filter

Your CBR runs as close to hot as possible, but if it's cycling, maybe this is in the upper range but acceptable? Maybe a CBR owner has close temps to yours by 2 degrees?

Test and decide if you should flush your coolant.
You can find a sensor that turns on the fan earlier.
Carb bikes don't do well sitting, I have four bikes with carbs now that I routinely run each weekend (ride them to full temp for a few minutes, change oil every 3 months until my knee mends ) to keep the carbs from reacting to ethanol used in our fuels here. About once a month I replace the fuel and pour the old stuff into my truck and inspect my fuel tanks inside. It's a very hostile salt and humid air quality in FL along the coast, and I've seen plenty of havoc a lack of maintenance does to bikes everyday.
I'd also confirm the temperature with another gauge.
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post #5 of 12 Old 01-05-2015, 9:42 PM Thread Starter
 
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Re: Fuel filter

I was thinking about draining and putting new stuff in plus adding the filter with some pro fst carb cleaner so that will hopefully keep the carbs

I was looking up how to add the switch and it doesn't look to hard but ill just have to find the correct wire,

Would this be a decent filter
http://pages.ebay.com/link/?nav=item...d=301462969429
Or would 6-8mm be to narrow.
Sorry about the question but this is my first bike in years

Last edited by Cbr1998; 01-05-2015 at 9:58 PM.
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post #6 of 12 Old 01-06-2015, 1:20 PM Thread Starter
 
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Re: Fuel filter

I got a filter from a mate but the fuel line comes out the valve straight across to the carbs and theses no room to get the filter in there so can I re route the fuel line from the valve so it goes down into the filter then back upto the carbs or will the gravity fed need the filter to stay horizontal.or does it not matter what way the filter is facing? Up down flat etc

Last edited by Cbr1998; 01-06-2015 at 1:28 PM.
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post #7 of 12 Old 01-06-2015, 3:12 PM Thread Starter
 
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Re: Fuel filter

One last thing..I pulled fuel line off to go empty fuel into a tank,turned the fuel on but no fuel comes out :/
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post #8 of 12 Old 01-18-2015, 5:41 PM
 
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Re: Fuel filter

Quote:
Originally Posted by Cbr1998 View Post
One last thing..I pulled fuel line off to go empty fuel into a tank,turned the fuel on but no fuel comes out :/
I would suggest that there is only enough fuel to be in the reserve range try turning the tap to reserve.
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post #9 of 12 Old 01-18-2015, 6:01 PM
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Re: Fuel filter

Quote:
Originally Posted by Cbr1998 View Post
One last thing..I pulled fuel line off to go empty fuel into a tank,turned the fuel on but no fuel comes out :/
I'm a little late to this show, but the 99 model uses a vacuum shut off for the fuel valve. So with the engine not running and you disconnect the fuel hose from the tap, it won't leak fluid even with the tap in the on position. The tap needs engine vacuum to open the diaphragm to allow fuel to flow. Also, in regards to having the line run down, then up, I would suspect at some point the pressure of what's left in the tank and what needs to get in for the carbs will equalize, thus not using everything that's left in the tank. I put an in line valve from my tank to the cabs. You should be able to fit a filter in there as well. You just need to cut up the stock fuel line and use the filter to act like the fuel line. For example: fuel line out of tap- filter - fuel line to carbs. Cut out a length of line equal to the size of the filter, then reattach to carbs. It's do-able.

My 99 900RR Track Build Link:Track Build 900RRX

My Red Rocker 93 Build Link: Café 900RRP
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post #10 of 12 Old 01-18-2015, 10:10 PM
 
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Re: Fuel filter

Although Ian stated that he was on drugs and in pain in other recent posts. This is what I did with an old Kawi that I had.
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post #11 of 12 Old 01-19-2015, 4:43 PM Thread Starter
 
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Re: Fuel filter

Ok that's petfect thanks
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post #12 of 12 Old 06-27-2017, 7:31 AM
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Re: Fuel filter

Quote:
Originally Posted by Cbr1998 View Post
Hi,I've just bought a cbr900 1999 model and I've been looking it over and I see the fuel is gravity fed with no fuel filter.can I put an inline filter between the tank and carbs or will this affect the flow off fuel? Why wouldn't Honda fit a filter to these bikes anyway.
Also my fan doesn't turn on untill 107/108 oC is this not a little high?

Thanks
I have a 1996 Fireblade. The fuel filter is attached to the on off switch inside to petrol tank
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