Question about 2003 Honda VT 1100 C2 Shadow Sabre

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Engine is making a sucking sound

I started my bike, heard a loud pop like a backfire, but it sounded like it came from the front cylinder. The bike started but made a sucking sound every time that piston took a stroke. I dont know what is going on.
Also what size socket do I need to change the spark plugs.

Thanks in advance for your help

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  • Anonymous Mar 15, 2014

    TVS Centra bike engine overheating after changing of new piston and coming more sound like tik tik tik tik... what is the problem please help me...

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  • 61 Answers

Sounds like when your bike backfired it blew the carb out of the intake boot. it is more common than you know on this model. just loosen the clamp and push it in untill it seats in the boot them tighten the clamp and go ahead and check the other clamps while you are at it. the spark plug socket is 18mm there should be one in your tool kit or you can buy one at most autoparts stores. Thanks

Posted on Aug 03, 2010

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G'day,
I have a couple of suggestions for you.
Your symptom sounds like your bike is running lean(problem improves with choke).
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I recomend that you check that any hoses that may be fitted to your bikes inlet manifolds,arn't damaged or split.
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For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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