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1Back to top Go down   Water in gas? Empty Water in gas? on Thu Jul 11, 2019 3:21 pm

Heresy23

Heresy23
Silver member
Silver member
Ok, so we had the worst storms last night and my bike was not covered....started it today and really almost didn’t get it started....sounded like cylinders are firing crazy.l.lwell I managed to take it out on a run to get it warmed.and in higher gears it’s fine now but when I come to idle or give it gas in first gear it chugs and hesitates and vibrates real terrible but once it’s in higher rpm it’s fine...you think this sounds like water in the gas or water getting into the engine and messing things up? To note when I open my gas cap water was getting in...thanks....

    

2Back to top Go down   Water in gas? Empty Re: Water in gas? on Thu Jul 11, 2019 3:27 pm

Heresy23

Heresy23
Silver member
Silver member
Better to put dry gas and then fill the tank or just drain what’s in there and fill it up ?


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85’k100 RT 73k
    

3Back to top Go down   Water in gas? Empty Re: Water in gas? on Thu Jul 11, 2019 5:28 pm

Laitch

Laitch
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@Heresy23 wrote:To note when I open my gas cap water was getting in...thanks....
What is meant by this statement—you opened the fuel cap in the middle of the downpour, or condensation runs into the tank when you open the cap? The rim of the cap opening has a drain port design to limit water infiltration into the tank. If a large amount of water has been dumped into the tank, replace the fuel.

I think it is more likely that electrical connections have been affected and the moto needs more drying time; however, a machine with good wiring and protected connectors should be able to run in rain without electrical problems. Problems with rain affecting performance indicate to me a need to inspect the condition of wiring and connectors.

Did you replace the z-hose from which oil was being emitted onto the engine block?


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1995 K75 73,000 miles
Water in gas? Usa-lo10
    

4Back to top Go down   Water in gas? Empty Re: Water in gas? on Thu Jul 11, 2019 6:28 pm

Heresy23

Heresy23
Silver member
Silver member
Ok, after I rode it , got home and let it sit for 40 min it was fine.....we had record breaking rainfall last night and storms which must have gotten to the wiring.....it never has issues in the rain , this is the first time it ever was effected my moisture....yes I replaced the breather hose......oh and when I open my gas cap , water drains into the tank. I’m pretty sure I could use a new one...i usually keep a rag handy and hurry and soak it up as I open the cap .....im defiantly gonna have to inspect the wiring , it’s wierd cuase it’s never had issues....I ride in rain all the time...also I forget to cover it a lot in the rain......I suppose I should start at the control unit and start checking wiring from there?....

    

5Back to top Go down   Water in gas? Empty Re: Water in gas? on Thu Jul 11, 2019 6:36 pm

MartinW

MartinW
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#1 If you have the cap orientated around the wrong way the drain port will be blocked. #2 The drain tube or hose could possibly be blocked. #3 The seal around the tank cap or base may be compromised. Where I live torrential downpours are a given and I've never had a problem with water in the tank.
Regards Martin.


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K75s Hybrid
    

6Back to top Go down   Water in gas? Empty Re: Water in gas? on Thu Jul 11, 2019 7:04 pm

Heresy23

Heresy23
Silver member
Silver member
There’s a tube? So I took off the whole thing 2 months ago to change fuel filter and never seen a tube or anything....I did notice a little hole ...well it’s hard to describe , I’ll take a picture tommorow when the rain stops but if there is supposed to be a tube or hose then I definitely don’t have that ! Lol


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85’k100 RT 73k
    

7Back to top Go down   Water in gas? Empty Re: Water in gas? on Thu Jul 11, 2019 7:10 pm

Matthew-Brisbane

Matthew-Brisbane
Life time member
Life time member
Put a match into the tank this will separate the petrol and water


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1986 K100 RS Motorsport
#### K100 RS Project 
2011 R1200 GS
    

8Back to top Go down   Water in gas? Empty Re: Water in gas? on Thu Jul 11, 2019 9:08 pm

caveman

caveman
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@Matthew-Brisbane wrote:Put a match into the tank this will separate the petrol and water
I think I can feel your pain?

    

9Back to top Go down   Water in gas? Empty Re: Water in gas? on Thu Jul 11, 2019 9:42 pm

duck

duck
Life time member
Life time member
Water can get in the gas cap if there's enough of it around.  Back when I used water to wash my bikes (now I just use cleaner wax) I'd often find a little water above the flap if I opened the cap.

There's a kit to replace all of the gas cap seals. 16119062461


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Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

10Back to top Go down   Water in gas? Empty Re: Water in gas? on Thu Jul 11, 2019 10:36 pm

MartinW

MartinW
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Life time member
Under the fuel tank there is a small square plastic box (accumulator) attached to the frame rail. The fuel overflow pipe and the water drain pipe sit in this box. The box has a hose that runs down near the rear master cylinder and drains on to the ground or rear wheel. Any water or fuel that goes into the accumulator should drain through the hose. Apparently if the accumulator is missing you can just have two hoses draining down to the ground. Check the two tubes on the bottom of the tank for blockages.
Regards Martin.


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K75s Hybrid
    

11Back to top Go down   Water in gas? Empty Re: Water in gas? on Thu Jul 11, 2019 11:03 pm

Heresy23

Heresy23
Silver member
Silver member
Thanx for the replies....so I tryed the match thing but it didn’t work that well, just ended in fire and death. So I think I’m gonna replace those gaskets becuase it doesn’t have any at this current moment ...Smile


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85’k100 RT 73k
    

12Back to top Go down   Water in gas? Empty Re: Water in gas? on Thu Jul 11, 2019 11:09 pm

MartinW

MartinW
Life time member
Life time member
Lack of gaskets would possibly be a major contributor to water getting into the tank. Water in gas? 161205 
Regards Martin.


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K75s Hybrid
    

13Back to top Go down   Water in gas? Empty Re: Water in gas? on Fri Jul 12, 2019 4:16 am

charlie99

charlie99
VIP
VIP
@Heresy23 wrote:Thanx for the replies....so I tryed the match thing but it didn’t work that well, just ended in fire and death. So I think I’m gonna replace those gaskets becuase it doesn’t have any at this current moment ...Smile

Water in gas? 44271


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OWater in gas? Au-log10

"redframe" rs "bitsa"  with many contributions from the k100 community ,,with many thanks
    

14Back to top Go down   Water in gas? Empty Re: Water in gas? on Fri Jul 12, 2019 4:47 am

92KK 84WW Olaf

92KK 84WW Olaf
Life time member
Life time member
The gas cap should open back towards you.

You will see a single small hole in the recess that's at the lowest point on the left. The gas cap assembly has a larger hole so that the hole in the tank is not covered.

There is a pipe inside the tank from this hole that comes out the bottom under the tank.

Get some pipe cleaners and you can use them to clear this pipe so any water can drain through it and out the bottom.

If you have an accumulation of water when you open the gas cap this will be your problem. If you have no accumulation of water then the gasket is the more likely issue.


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1992 K100LT 0193214 Bertha Alaska Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 58,645 now 98,780 miles
1983 K100RS 0011171 Fricka 29,495 miles Damn K Pox Its a Bat outta Hell No 32,600 miles
    

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