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#1001117 - 11/18/17 04:38 AM Re: Loss of power and tick sound [Re: Dave Labrecque]  
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Posts: 1,041
Tri750 Offline
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Tri750  Offline
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Oh, item # 18


Classic Cycle Connection
Current:
1971 R75/5 roadracer
1973 Kawasaki Z1 roadracer
1976 BMW R75/6
1999 BMW R1100RT
2007 Kymco People 200S

#1001186 - 11/19/17 01:21 AM Re: Loss of power and tick sound [Re: Tri750]  
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Posts: 23
Dave Labrecque Offline
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Dave Labrecque  Offline
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Tucson, Arizona, USA
Thanks, Tri! Lemme try that and report back!


Dave Labrecque
Becket, Massachusetts

1988 K75S
#1001475 - 11/24/17 04:03 AM Re: Loss of power and tick sound [Re: Dave Labrecque]  
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Dave Labrecque Offline
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Dave Labrecque  Offline
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Tucson, Arizona, USA
Thanks, gents. I have the caps on order (as well as the air and fuel filters). I did put my finger over the one open vacuum port, and it didn't seem to make any difference, FWIW. The intake backfiring continued. Still little power on revving.

BTW -- I listened real close to the tank the last time I ran it. I do hear the fuel pump running. So that's good.

Is it telling that the loss of power happened all at once during my last ride, about five or ten minutes in?

I've heard that my winter habit of running the bike for ten minutes every two weeks is NOT GOOD for the bike. frown

I'm not crazy about draining the tank (though I could do that). Would simply adding fuel stabilizer and putting a tender on the battery be good for five or six months? Not running it at all during that period? (We typically get a lot of snow, and there's no way to ride it from December through March or April.)

Thanks, again.


Dave Labrecque
Becket, Massachusetts

1988 K75S
#1001478 - 11/24/17 04:24 AM Re: Loss of power and tick sound [Re: Dave Labrecque]  
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Tri750 Offline
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Tri750  Offline
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If you have ethanol as I guess you probably do, it will start eating the pickup screen ,the black rubber vibration damper and the float wiring in the tank.
You can remove the gas cap, siphon out the gas, carefully lift the pump up a bit and reach in to feel the black vibration damper . If it "smears" or obviously if there are shards of it in the bottom of the tank, your pump may have begun to ingest this stuff.
If so, the pumps days are numbered an it and all the attached parts need to be replaced as well.

Beemer Boneyard or Euro Motoelectric have aftermarket replacement kits for this as sadly, it's all too common.

Your symptoms are more vacuum leak in nature to me unless of course your airbox is full of mouse nest or dog food.
You can test by spraying a fine mist of water from a spray bottle around the fuel rail while the engine is running. If the engine races or stalls, you found the cracked hose(s)

For storage, the true "best way" in my opinion is by buying a couple gallons of unleaded race fuel after you sort the bike out.
Any octane is fine, 98, 105, etc.
run the bike a few miles to make sure the race fuel is thru the system and park it.
Race fuel will evaporate a bit but keeps its gas properties without turning to gunk for up to two years.
VP or Sunoco are two easy to find brands. Try a Karting shop or race supply place to buy bulk or you'll have to buy a 5 gallon can.
If you have a couple bikes, then use on both.

Last edited by Tri750; 11/24/17 04:26 AM.

Classic Cycle Connection
Current:
1971 R75/5 roadracer
1973 Kawasaki Z1 roadracer
1976 BMW R75/6
1999 BMW R1100RT
2007 Kymco People 200S

#1001909 - 12/04/17 03:07 AM Re: Loss of power and tick sound [Re: Dave Labrecque]  
Joined: Apr 2009
Posts: 23
Dave Labrecque Offline
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Dave Labrecque  Offline
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Joined: Apr 2009
Posts: 23
Tucson, Arizona, USA
Thanks for the pointers, Tri. smile


Dave Labrecque
Becket, Massachusetts

1988 K75S
#1001934 - 12/04/17 04:05 PM Re: Loss of power and tick sound [Re: Dave Labrecque]  
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Posts: 1,041
Tri750 Offline
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Tri750  Offline
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SO IS THE BIKE FIXED ?


Classic Cycle Connection
Current:
1971 R75/5 roadracer
1973 Kawasaki Z1 roadracer
1976 BMW R75/6
1999 BMW R1100RT
2007 Kymco People 200S

#1001936 - 12/04/17 04:37 PM Re: Loss of power and tick sound [Re: Dave Labrecque]  
Joined: Apr 2009
Posts: 23
Dave Labrecque Offline
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Dave Labrecque  Offline
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Posts: 23
Tucson, Arizona, USA
Fraid not. Finally got some parts in (vacuum port caps, fuel and air filters). It's supposed to be "warm" (low 50s) tomorrow. Hope to get out in the garage, then. Too much stuff to do!


Dave Labrecque
Becket, Massachusetts

1988 K75S
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