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Old 11-24-2009, 12:32 AM   #1
306 That Could
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Pretty Sure my low Gas indicator is broken??

Ive had a feeling the gas light wasnt coming on like it should be and today I found out for sure. I have an 04 GSXR 750 with 9k on the odo. When I turn the key all the lights come on for its test and everything works including the gas light. Currently everything seems normal, and no fuses are blown.

When I left the house this morning I did all my pre ride checks which includes a gas check. Im usually pretty good at judging when I need gas and i had a little more than a quarter of a tank. So i figured the gas light would come on about halfway through my errands I was running...... Nope..... I went all day with out getting gas and as I was starting to get worried I might just run out of gas, I had to stop faster than normal for a light and the fvcker died. I was like holy !! Luckily there was a gas station real close and I putted to it. I filled it up and it took over 4 gallons!!!! Ive never run it that empty without seeing the gas light. The most ive ever seen it take is about 3.6 gallons.

So my question is do the mechanisms in the gas tank fail sometimes and how can I fix it. Im not 100% sure its not just an unplugged wire, im going to check under the tank tomorrow just to be sure, I have been practicing my wheelies alot lately tho and have come down pretty hard a few times..... Thanks guys.
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Old 11-24-2009, 02:13 AM   #2
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For now, reset your trip odo at your next refuel.
Ride 100 miles and fill up again.
This will give you a good indication of how many miles you can run without hitting empty. Your tank is prob 4.1 gals. My 06 gixxer 600 is 4.1 gals and I can run about 150-160 miles no prob till I refuel.

Just do the math and you wont get stranded until you can properly fix the problem. Good luck.
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Old 11-24-2009, 02:18 AM   #3
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Quote:
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can run about 150-160 miles no prob till I refuel.
I only get liike 100 till my gas gauge comes on
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I’m really happy for you and I’m going to let you finish but AJFlo is one of the baddest mother fockers of all time!!!
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Old 11-24-2009, 04:50 AM   #4
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Quote:
Originally Posted by AJFLo View Post
I only get liike 100 till my gas gauge comes on
Cause you live on the edge fool!
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Old 11-24-2009, 05:19 AM   #5
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Quote:
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I only get liike 100 till my gas gauge comes on
Yeah I get about the same, but if you refuel when the light comes on, you're only got fill up about 3 gals.
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Old 11-24-2009, 05:54 AM   #6
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normally when the light comes on It takes about 3.4 gallons to fill it to the brim. Never as much as I had to put in yesterday. I checked my gas reciept and it took 4.2 gallons. Still not sure what the problem is but i hope its not too expensive.......

AJ 100 miles till the gas light, im impressed!!! Its too bad you dont live on the south side or vise versa.....I have that need for speed all the time....unless im doin important stuff then I usually putt around.
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Old 11-30-2009, 06:56 AM   #7
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Find your problem bro? Update if you can for the benefit of the next guy. Thanks!
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Old 11-30-2009, 08:59 AM   #8
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when you first turn the key on, does the cluster do a light check?


check the resistance of the signal wire and see if the switch it open when you lift or lower the sensor in the tank. Should change when lowered.
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Old 12-01-2009, 06:33 AM   #9
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when you first turn the key on, does the cluster do a light check?


check the resistance of the signal wire and see if the switch it open when you lift or lower the sensor in the tank. Should change when lowered.
Sorry guys I havent jacked with it yet, but I will be either today or tomorrow.

Cali, It sure does so I know the light works..... so I need to stick something in the tank and lower the sensor??
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Old 12-01-2009, 08:12 AM   #10
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ya'll make me feel bad i only get like 90~ before my light comes on.... 4.5 gallon tank according to specs.... then again that big azz dent dont help either huh?

i've seen what those sensors looks like i have a 2 stage (2 sensors) first flashing then second it just stays on...

basically if the sensor isnt covered in gas it will trip

i dont like to wait til the light comes on though because when its that low the pump will suck up all the and clogg your strainer/filter even faster. i've had this happen to me, it was so starved of fuel that the bike would violently lurge back and forth with power and no power when i went WOT. especially when it was less than 1/2 tank.
you shoulda seen my filter and strainer...
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Old 01-29-2010, 03:07 AM   #11
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..
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Old 01-29-2010, 04:29 AM   #12
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Well I just checked the manual and what looks like a mini fuel pressure regulator is actually the regulator, not the fuel switch. The switch is the mini cylinder on the right in the first pic. It must be bad......
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Old 01-29-2010, 11:57 AM   #13
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looks like you need to replace the pump assy.
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Old 01-30-2010, 01:29 AM   #14
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talked to sunny today and he told me where to buy the sensor… sounds like an easy fix but the sensor costs 126 bucks!! i did however find some fuel pump assemblys on ebay and a couple people parting out bikes for like 40 to 50 bucks…
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Old 01-30-2010, 02:00 AM   #15
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talked to sunny today and he told me where to buy the sensor… sounds like an easy fix but the sensor costs 126 bucks!! i did however find some fuel pump assemblys on ebay and a couple people parting out bikes for like 40 to 50 bucks…
holy !! umm...sounds like a hard decision...lol
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Old 02-01-2010, 04:33 PM   #16
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Also, Id check continuity on the wires for the sender to the ecu/guages(wherever they run to) before dropping money for a new unit. You'd feel pretty silly spending a bunch of cash only to find out it was just a broken wire.
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