Backfire on starting - SV650.org

01-09-11, 06:28 PM

Very occasionally my SV backfires on start up, has no ill affects just wondered what may cause it, it is dyno-jetted, K&N air filter and has and aftermarket exhaust. Doesn't do it all the time tho, more so in winter when choke gets used more.

01-09-11, 06:50 PM

Mine too completely standard no choke bit of throttle, its so loud it made my neighbour over the road scream!

ok and me. Ill be watching this thread. Im thinking too lean without choke to start first cycles.

dizzyblonde · 01-09-11, 06:59 PM

Quote:

Originally Posted by daveyrach

Very occasionally my SV backfires on start up, has no ill affects just wondered what may cause it, it is dyno-jetted, K&N air filter and has and aftermarket exhaust. Doesn't do it all the time tho, more so in winter when choke gets used more.

Condensation. Collects down the end can? Winter, more moisture around?

simplez

01-09-11, 08:20 PM

Sticky choke plunger causing a huge difference in furling between cylinders can be another one, if u hav never serviced ur chokes it could be an afternoon well spent, transforms a bike for winter riding, make sure u run oil down the inside of the choke cables too

or if u take the cables right off bathe them in a basin of oil overnight!

02-09-11, 07:45 AM

Thanks guys, is only very occasionally, choke is fine moves freely, all my cables get oiled regularly. I'd say it does it maybe once every couple of weeks in summer maybe once or twice a week in summer.

02-09-11, 09:18 AM

This has happened to me a few times recently. Its fookin loud. Not sure what it is either.

dizzyblonde · 02-09-11, 09:20 AM

condensation

It has rained recently, and its been lower in temperature. Bit of rain down the end spout......if your bike is stored outside.........etc etc

02-09-11, 09:49 AM

Happens to mine too.

02-09-11, 10:04 AM

Quote:

Originally Posted by dizzyblonde

condensation

It has rained recently, and its been lower in temperature. Bit of rain down the end spout......if your bike is stored outside.........etc etc

Well it did it when I was leaving work yesterday and my bike is stored outside but it has not rained for 7-8 days now, I use it on a 30 mile round trip daily so if it hasn't rained there's no chance for condensation to get down there.

02-09-11, 10:53 AM

Quote:

Originally Posted by ibanezlynx

This has happened to me a few times recently. Its fookin loud. Not sure what it is either.

I tense up everytime i start mine now

01-09-11, 06:28 PM	#1
daveyrach Guest Posts: n/a	Backfire on starting Very occasionally my SV backfires on start up, has no ill affects just wondered what may cause it, it is dyno-jetted, K&N air filter and has and aftermarket exhaust. Doesn't do it all the time tho, more so in winter when choke gets used more.

01-09-11, 06:50 PM	#2
beabert Guest Posts: n/a	Re: Backfire on starting Mine too completely standard no choke bit of throttle, its so loud it made my neighbour over the road scream! ok and me. Ill be watching this thread. Im thinking too lean without choke to start first cycles. Last edited by beabert; 01-09-11 at 07:03 PM.

01-09-11, 08:20 PM	#4
Ceebl Guest Posts: n/a	Re: Backfire on starting Sticky choke plunger causing a huge difference in furling between cylinders can be another one, if u hav never serviced ur chokes it could be an afternoon well spent, transforms a bike for winter riding, make sure u run oil down the inside of the choke cables too or if u take the cables right off bathe them in a basin of oil overnight!

02-09-11, 07:45 AM	#5
daveyrach Guest Posts: n/a	Re: Backfire on starting Thanks guys, is only very occasionally, choke is fine moves freely, all my cables get oiled regularly. I'd say it does it maybe once every couple of weeks in summer maybe once or twice a week in summer.

02-09-11, 09:18 AM	#6
ibanezlynx Guest Posts: n/a	Re: Backfire on starting This has happened to me a few times recently. Its fookin loud. Not sure what it is either.

02-09-11, 09:20 AM	#7
dizzyblonde Da Cake Boss Mega Poster Join Date: May 2007 Location: On a flying Horse Posts: 9,992	Re: Backfire on starting condensation It has rained recently, and its been lower in temperature. Bit of rain down the end spout......if your bike is stored outside.........etc etc __________________ Suzy, yellow 2001 SVS. Kitty, V-Raptor 1000, ZZR1400<<its my bike now Pegasus! Hovis 13.8.75-3.10.09 Reeder 20.7.88-21.3.12

02-09-11, 09:49 AM	#8
Geese Guest Posts: n/a	Re: Backfire on starting Happens to mine too.

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