Author Topic: Fuel fliters  (Read 8750 times)

Offline magicGoose

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Re: Fuel fliters
« Reply #15 on: May 13, 2008, 11:58:29 AM »
Jay, thanks for the reply, that's what I needed to know. :thanks:
Gary, thanks for the info, interesting to know, but since I'm a street rider, not a racer like you, I don't want to lose reserve functionality. :beers:

where do you get these from?

I got the filter from my local independent bike shop, they were in the Motovan catalog, I do't know if that's just a Canadian supplier, maybe it doesn't help you.

Jay, you mention how your bike acts funny when the fuel is low. Before I installed the filter, with a bog stock bike, when my fuel level started getting low, but way before reserve should have been needed, the bike would lose power and start acting like it needed reserve, when I switched to reserve, the problem went away. I assumed the petcock was getting tired, and I'm planning on replacing it, but I believe you have said you run a Pingle petcock, so are you saying you still have this problem with a pingel, or have I misunderstood you?

Steve


Motovan is a Canadian only supplier. What makes you think that you should not have been close to going on reserve?? Does is not make logical sense that if switching the bike to reserve and the problem goes away YOUR LOW ON FUEL !!!!!!! Obviously you don't know the inner workings of a fuel pick up, Petcocks DON'T get tired!!  Not in that way anyways. They are simply 2 pipes of different heights in the bottom of the fuel tank and a valve that switches between the 2. When the bike start to run out of gas on the higher of the 2 pipe you switch it over the the lower of the 2 pipes and proceed on your way. With a 400 I would find a gas station soon as you have about 3.8 l of fuel left. On a stock Bandit you can run anywhere between 160 to 240km before hitting reserve and this all depends on the kind of riding your doing


First of all, THANK YOU for pointing out what I obviously don't know. Your attitude is extremely helpful.
Since the petcock is simply 2 pipes of different heights in the bottom of the fuel tank and a valve that switches between the 2, the vacuum line that goes to the petcock is obviously a figment of my imagination, and it is impossible that the amount of fuel pressure above the petcock influences how fully the aging, possibly stiffening diaphragm opens as the head pressure of the fuel decreases.
I need to switch to reserve when I have about a half tank of fuel left. This is what makes me think I'm not "LOW ON FUEL !!!!!!!"
1991 B4

Offline gsxr400 racer

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Re: Fuel fliters
« Reply #16 on: May 13, 2008, 12:06:22 PM »
Just cut the plastic tubes off and get a good fuel filter solves a lot of problems :stickpoke:
1988 gsxr 400 sp (sprint bike)
*  SELLER OF THE 442CC BIG BORE PISTON KIT FOR THE BANDIT 400,GSXR400, GK73 and 76.* And carb kits(orings)too. Email me from here.
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Offline Thief400

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Re: Fuel fliters
« Reply #17 on: May 13, 2008, 01:44:32 PM »
Jay, thanks for the reply, that's what I needed to know. :thanks:
Gary, thanks for the info, interesting to know, but since I'm a street rider, not a racer like you, I don't want to lose reserve functionality. :beers:

where do you get these from?

I got the filter from my local independent bike shop, they were in the Motovan catalog, I do't know if that's just a Canadian supplier, maybe it doesn't help you.

Jay, you mention how your bike acts funny when the fuel is low. Before I installed the filter, with a bog stock bike, when my fuel level started getting low, but way before reserve should have been needed, the bike would lose power and start acting like it needed reserve, when I switched to reserve, the problem went away. I assumed the petcock was getting tired, and I'm planning on replacing it, but I believe you have said you run a Pingle petcock, so are you saying you still have this problem with a pingel, or have I misunderstood you?

Steve


Motovan is a Canadian only supplier. What makes you think that you should not have been close to going on reserve?? Does is not make logical sense that if switching the bike to reserve and the problem goes away YOUR LOW ON FUEL !!!!!!! Obviously you don't know the inner workings of a fuel pick up, Petcocks DON'T get tired!!  Not in that way anyways. They are simply 2 pipes of different heights in the bottom of the fuel tank and a valve that switches between the 2. When the bike start to run out of gas on the higher of the 2 pipe you switch it over the the lower of the 2 pipes and proceed on your way. With a 400 I would find a gas station soon as you have about 3.8 l of fuel left. On a stock Bandit you can run anywhere between 160 to 240km before hitting reserve and this all depends on the kind of riding your doing


First of all, THANK YOU for pointing out what I obviously don't know. Your attitude is extremely helpful.
Since the petcock is simply 2 pipes of different heights in the bottom of the fuel tank and a valve that switches between the 2, the vacuum line that goes to the petcock is obviously a figment of my imagination, and it is impossible that the amount of fuel pressure above the petcock influences how fully the aging, possibly stiffening diaphragm opens as the head pressure of the fuel decreases.
I need to switch to reserve when I have about a half tank of fuel left. This is what makes me think I'm not "LOW ON FUEL !!!!!!!"


If the diaphram was too stiff to open the on/off valve fully it would also be cracked. Then you would be flooding cyl 1 !!!! But you already knew that cause your soooo smart

Offline gsxr400 racer

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Re: Fuel fliters
« Reply #18 on: May 13, 2008, 02:52:20 PM »
I know where to get a diaphragm kit for the fuel valve.
1988 gsxr 400 sp (sprint bike)
*  SELLER OF THE 442CC BIG BORE PISTON KIT FOR THE BANDIT 400,GSXR400, GK73 and 76.* And carb kits(orings)too. Email me from here.
has been a wera expert #610 lol

Offline Banditmax

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Re: Fuel fliters
« Reply #19 on: May 13, 2008, 02:54:40 PM »
You know where to get a fuelcock rebuild kit?

Offline gsxr400 racer

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Re: Fuel fliters
« Reply #20 on: May 13, 2008, 02:57:32 PM »
I dont know everything but yes i do know where to find one
1988 gsxr 400 sp (sprint bike)
*  SELLER OF THE 442CC BIG BORE PISTON KIT FOR THE BANDIT 400,GSXR400, GK73 and 76.* And carb kits(orings)too. Email me from here.
has been a wera expert #610 lol

Offline gsxr400 racer

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Re: Fuel fliters
« Reply #21 on: May 13, 2008, 02:58:08 PM »
Actually posted it on here once
1988 gsxr 400 sp (sprint bike)
*  SELLER OF THE 442CC BIG BORE PISTON KIT FOR THE BANDIT 400,GSXR400, GK73 and 76.* And carb kits(orings)too. Email me from here.
has been a wera expert #610 lol

Offline Banditmax

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Re: Fuel fliters
« Reply #22 on: May 13, 2008, 03:05:01 PM »
Lol and where may this be?

Offline gsxr400 racer

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Re: Fuel fliters
« Reply #23 on: May 13, 2008, 05:55:50 PM »
Some where in here have to look and see what bike had the vacume and same gasket

http://www.carbkitscapital.com/carb_kit_list_part.php?make=Suzuki&cat=Petcock_Repair
1988 gsxr 400 sp (sprint bike)
*  SELLER OF THE 442CC BIG BORE PISTON KIT FOR THE BANDIT 400,GSXR400, GK73 and 76.* And carb kits(orings)too. Email me from here.
has been a wera expert #610 lol

Offline gsxr400 racer

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1988 gsxr 400 sp (sprint bike)
*  SELLER OF THE 442CC BIG BORE PISTON KIT FOR THE BANDIT 400,GSXR400, GK73 and 76.* And carb kits(orings)too. Email me from here.
has been a wera expert #610 lol

Offline VW_NUT

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Re: Fuel fliters
« Reply #25 on: June 02, 2008, 09:16:00 AM »
Is this what you were using?  Our fuel line is 3/8", right"?
http://www.jegs.com/p/Russell/763885/10002/-1/10293

I want to run a fuel filter.  I had an "issue" this weekend.  The cyl 2 float stuck and filled the cylinder with gas.  I think its cause there was some left over junk in it.   I cleaned it out and it it was fine after.  Good thing I checked the cylinder though as it was completely full of gas.  What a pain to get it all out..
« Last Edit: June 02, 2008, 09:20:47 AM by VW_NUT »

Offline tomacGTi

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Re: Fuel fliters
« Reply #26 on: June 02, 2008, 10:45:09 AM »
5/16th.

I've gone to a paper auto-sized disposable filter instead of the replaceable kind because I think the media works a bit better. That and the larger size acts as a surge tank for additional fuel, the theory works well with the Pingel petcock. I still see a little silt here and there but nowhere near as much as when I was using one of those clear replaceable element ones from "da boys". 

Ironically, I got a float stuck in #2 not too long ago and it did the same: flooded out a cylinder. Worst was that I had just changed the oil not 20 min prior. I think it was some debris that had slipped past the hose because I had the supply line off earlier.

I think this winter I'm going to strip the failed Kreem and redo the tank entirely. A total PIA but has to be done.

-Randy

Offline VW_NUT

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Re: Fuel fliters
« Reply #27 on: June 02, 2008, 10:57:41 AM »
How bad does it dilute the oil?  I should probably change the oil again now.  Damn...

Offline tomacGTi

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Re: Fuel fliters
« Reply #28 on: June 02, 2008, 11:14:05 AM »
Look at the oil level, if it's higher than what it was before, change the oil. It depends on how long it sat for after it filled the cylinder.

What will happen is that the fuel will wash the cylinder walls clean and slip past the rings and dilute the oil in the crankcase. You risk spinning bearings etc since the oil has been broken down.

I just went and changed it again because it's cheaper to buy oil versus cracking open the cases and replacing bearings. Didn't do the filter, just the oil.

Offline interfuse

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Re: Fuel fliters
« Reply #29 on: June 03, 2008, 01:03:43 PM »
I thought the fuel hose was 5/8's. But I've been wrong before.





Mike

'91 GSF400
It's more fun to ride a slow bike fast than a fast bike slow.