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 Backfireing through the pipes on startup??
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Joined: Feb 2006
Posts: 786
3/4 Throttle
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OP
3/4 Throttle
Joined: Feb 2006
Posts: 786 |
Well it seems after waking my 05 TBA up after it's winter nap Something strange has started. It seems when I start her (Cold) NO Throttle full Choke I get 1 loud backfire through the pipes. Once it is warmed up it starts fine. Runs and Idles fine! Any ideas?? Thanks
05 TBA Mulberry/Silver, Thunder Bike pipes, K&N single Filter, 132 main Jet's, Snorkles Removed
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Re: Backfireing through the pipes on startup??
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Joined: Jun 2006
Posts: 390
Adjunct
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Adjunct
Joined: Jun 2006
Posts: 390 |
Mine does that on occasion...just on the first start up. I don't think it is a big deal but when it does it, I start looking for pieces of air-box.  
Ezcue
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Re: Backfireing through the pipes on startup??
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Joined: Aug 2006
Posts: 77
Member
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Member
Joined: Aug 2006
Posts: 77 |
My '02 TBA does it too....sometimes..only mine does it warm or cold....just not every time...  I like it when it does it with lots of people around!!
'02 TBA,904,Scepter,K&N,and a little bling too!
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Re: Backfireing through the pipes on startup??
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Joined: Jan 2005
Posts: 2,362
Oil Expert
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Oil Expert
Joined: Jan 2005
Posts: 2,362 |
I start mine cold on 1/2 throttle and it rarely does it (tho of course it doesn't get cold enough to snow here so this might not work for you.) I've also heard people recommend turning the ignition on and leaving it for 60 secs or so before starting it to allow the carb heaters to warm up the carbs.
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Re: Backfireing through the pipes on startup??
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Joined: Jan 2005
Posts: 2,968 Likes: 1
Loquacious
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Loquacious
Joined: Jan 2005
Posts: 2,968 Likes: 1 |
Check your vaccum plugs. They have a tendency to crack over the winter and cause a vaccum leak which can cause backfires.
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 Re: Backfireing through the pipes on startup??
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Joined: Jan 2005
Posts: 157
Adjunct
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Adjunct
Joined: Jan 2005
Posts: 157 |
What size are the vacuum plugs ?
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Re: Backfireing through the pipes on startup??
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Joined: Sep 2006
Posts: 176
Adjunct
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Adjunct
Joined: Sep 2006
Posts: 176 |
Mine was doing that last year. Cured it with a slight adjustment on teh carb screws to lean it out a bit.
'06 Speedmaster, DBA Performance Pipes, re-jetted, needles, Snorkel / AI removed, shiny bits......
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