2007 big dog bulldog fuel injected

[willywill4765]

Hello all again big dog been running pretty well until this past weekend seem to be getting a hissing sound coming out by my air cleaner air filter. Thought it might be gas check the spark plugs everything seems to be good just seeing if anybody out there has got a clue seem to have lost a little power

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[Jersey Big Mike]

First question is has ANYTHING changed or been done? Maintenance included.
I'd start with changing the sir filter and making sure it's seated properly.

 

[SKOGDOG]

Or maybe a vacuum hose

 

[bdm7250]

Or maybe a vacuum hose

 

[woodbutcher]

how about the little rubber caps?

 

[willywill4765]

First question is has ANYTHING changed or been done? Maintenance included.
I'd start with changing the sir filter and making sure it's seated properly.

No maintenance or anything has been done lately but I will try changing the air filter

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[willywill4765]

I will check my hoses also

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[willywill4765]

how about the little rubber caps?

Not sure what little rubber caps you're talking about can you tell me where they're at

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[woodbutcher]

should have one just to the forward side of the throttle cables on the top of the carb. they tend to dry out with age and crack and eventually fall off allowing a vacuum leak. looks like the cap on a brake bleed fitting. it points upward.

 

[willywill4765]

should have one just to the forward side of the throttle cables on the top of the carb. they tend to dry out with age and crack and eventually fall off allowing a vacuum leak. looks like the cap on a brake bleed fitting. it points upward.

It's fuel injected not sure if I would still have the rubber caps somewhere else

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[woodbutcher]

that i can't help you with, mine is carb. sorry. but take a flashlight and go on a safari, it'll teach you alot about your bike. good luck.

 

[pknowles]

It's fuel injected not sure if I would still have the rubber caps somewhere else

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This is what you should have behind the air cleaner, See the brass fittings.

 

[woodbutcher]

so, in the blow-up, it appears there are 2 of them. one to the right of #22 and one between #25 and #16.

 

[willywill4765]

View attachment 47649

This is what you should have behind the air cleaner, See the brass fittings.

Great picture the brass vacuum to the right of #22, my rubber seal is cracked that will probably be my problem I will run to the parts store to get another one thank you so much for all your help

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