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CV carb question/theory
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north49
CV carb question/theory
Any CV carb gurus out there..?? My '80 GS1000 is very very difficult to start when cold. I read on these pages that blowing in the carb vent pipes will over come the problem. That does indeed work a treat and the bike fires up immediately. (thanks to the member that mentioned it!) OK, the question is......WHY does this work? What is going wrong inside the carbs that they need blowing into the vent tubes? I'd rather fix the carbs than wrap my lips around the vent pipes. Thanks for any info......Tags: None
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Originally posted by north49 View PostAny CV carb gurus out there..?? My '80 GS1000 is very very difficult to start when cold. I read on these pages that blowing in the carb vent pipes will over come the problem. That does indeed work a treat and the bike fires up immediately. (thanks to the member that mentioned it!) OK, the question is......WHY does this work? What is going wrong inside the carbs that they need blowing into the vent tubes? I'd rather fix the carbs than wrap my lips around the vent pipes. Thanks for any info......
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chiphead
I am totally unfamiliar with this theory but I'm guessing that blowing in the vent tubes pressurizes the float bowls which makes gas percolate or bubble into the venturi which gives you a fat mixture to start the bike. It sounds like at the very least, your choke pick tubes or choke pickup orifices in the actual float bowl are clogged.
IMHO.
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Originally posted by chiphead View PostI am totally unfamiliar with this theory but I'm guessing that blowing in the vent tubes pressurizes the float bowls which makes gas percolate or bubble into the venturi which gives you a fat mixture to start the bike. It sounds like at the very least, your choke pick tubes or choke pickup orifices in the actual float bowl are clogged.
IMHO.
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jayz
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Forum LongTimerCharter Member
GSResource Superstar
Past Site Supporter- May 2002
- 44506
- Brooksville Fl.
At least you didnt blow the cap off the gas tank. LMAO
Earl
Originally posted by jayz View PostI think you can overdo it though. I ended up blowing gas all the way into the air box.Komorebi-The light filtering through the trees.
I would rather sit on a pumpkin and have it all to myself than be crowded on a velvet cushion. H.D.T.
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jayz
I actually did hear gurgling in the tank. That gives me idea, I've got a little dent in the tank, maybe I could pop it out???? LOL
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north49
Thanks Dave.......is there such a thing as a rebuild kit for CV carbs? ie gaskets, o-rings etc.
cheers
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Originally posted by north49 View PostThanks Dave.......is there such a thing as a rebuild kit for CV carbs? ie gaskets, o-rings etc.
cheers
Any other questions...just ask.
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kurifu
Check the rubber boots between the air box and the carbs, mine shrank and caused air leaks, it wouldn't start in the cold because the fuel mixture was too lean, you could be having the same problem. Also make sure that your air filter is in there snug and no leaks between the base and the airfilter, use silicon if you have to seal it again, replacement boots can be purchased from bikebandit.com or many other parts places if required.
When I replaced my boots I went from not being able to start my bike at 18 degrees celsius to being able to start it right down to 8 degrees celsius, it made a huge difference.
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