SuzukiSavage.com - running lean/hot

jabman Senior Member Offline Posts: 411 England Gender:	Re: running lean/hot Reply #15 - 09/10/10 at 05:59:56 the jets in the carb can gum up partially blocking off fuel causing the lean situation you described. did the bike run ok immediately after any mods or has this problem appeared a while after?
Back to top	93" savage, 177.5 main, 52.5 w/holes 3 turns out , middle circlip, 6" k&n round filter, Dyna muffler, TKAT brace IP Logged

bill67

Serious Thumper

Offline

old tired

Posts: 8517
genoa city wisconsin
Gender: male

Re: running lean/hot
Reply #16 - 09/10/10 at 06:08:54

Arnold wrote on 09/10/10 at 05:12:53:

I'm confused, you said you left the main jet at 155, isnt the factory jet supposed to be 145? Typically 155 jet works well with a straight exhaust and cone air filter. 52.5 Pilot is factory, you can go up to 55. If you already have a 155 jets, that's stage 3, it should no longer be lean though. You may also want to drop the needle, look for info on white spacer mod.

Seafoam may clean up the system but it wont change the mixture.

Sea foam will clean up the jets and make the mixture slightly richer.

Back to top

william h krumpen

IP Logged

jabman Senior Member Offline Posts: 411 England Gender:	Re: running lean/hot Reply #17 - 09/10/10 at 06:14:42 hey bill would you use the seafoam raw and just drain the carb bowl, fill the bowl up with seafoam, leave it over night and then drain it in the morning ?
Back to top	93" savage, 177.5 main, 52.5 w/holes 3 turns out , middle circlip, 6" k&n round filter, Dyna muffler, TKAT brace IP Logged

bill67 Serious Thumper Offline old tired Posts: 8517 genoa city wisconsin Gender:	Re: running lean/hot Reply #18 - 09/10/10 at 06:21:49 Yes but you have to run the motor to get the sea Foam up in the carb,Run it for a minute or so.then leave over night.
Back to top	william h krumpen IP Logged

jabman Senior Member Offline Posts: 411 England Gender:	Re: running lean/hot Reply #19 - 09/10/10 at 06:30:32 there you go if you really don't what to strip the carb down do that 1st
Back to top	93" savage, 177.5 main, 52.5 w/holes 3 turns out , middle circlip, 6" k&n round filter, Dyna muffler, TKAT brace IP Logged

Routy

Serious Thumper

Offline

SuzukiSavage.com
Rocks!

Posts: 2280
Winston Oregon
Gender: male

Re: running lean/hot
Reply #20 - 09/10/10 at 08:18:03

Arnold wrote on 09/09/10 at 08:35:39:

But isnt backfiring directly related to lean mixture?

Yes it is, but that doesn't mean that its wrong. Suzuki does NOT guarantee to stop the backfiring on a brand new bike. Yes, part of the reason is because they are under epa regs. But, by design, these engines are known for some backfiring. Sure, some here hack the carb till it doesn't BF as much, but it will still do it under the right conditions. And those are some of the same people that complain of running rich, and have to change the s plug often, and wonder why.
If you haven't had to touch the s plug in 6,000 miles, something tells me its running perdy good Roll Eyes

Back to top

Rich
'07 S40 Blvd stocker, except drilled OEM exhaust and white spacer mod...1/2 (.055)

IP Logged

bill67 Serious Thumper Offline old tired Posts: 8517 genoa city wisconsin Gender:	Re: running lean/hot Reply #21 - 09/10/10 at 08:25:29 If your not getting 60 mpg you are running to rich or your carb isn't working smooth. Under normal cruising.
Back to top	william h krumpen IP Logged

jabman Senior Member Offline Posts: 411 England Gender:	Re: running lean/hot Reply #22 - 09/10/10 at 08:27:19 one of these days im going to get round to working out my mpg
Back to top	93" savage, 177.5 main, 52.5 w/holes 3 turns out , middle circlip, 6" k&n round filter, Dyna muffler, TKAT brace IP Logged

babyhog

Serious Thumper

Offline

Find a Cure for
Breast Cancer!
NOW!!

Posts: 3802
WV
Gender: female

Re: running lean/hot
Reply #23 - 09/10/10 at 08:37:43

I ran out of gas again yesterday, and only had 75 miles since the last time I had fueled. Hubby usually pumps my gas, but I did it last time, so I guess I didn't put enough in it! LOL After switching to reserve, I went straight to the gas station. Added a full 2.0 gallons, so I'm gonna check it better next time.

The weather has been cooler here the last few days, and I noticed my bike seemed to run better yesterday. Cool in the mornings, it got to about 70'ish yesterday. Not nearly as much backfiring and popping going on. What does that indicate??

Back to top

~ 2006 Black, Big Crank battery, HD Softail muffler, engine guard/o-ring pegs, Spitfite windshield, custom mounted Saddlemen bags, Mustang seat! ~ oh, and Hairdo by Helmet! ~

IP Logged

bill67 Serious Thumper Offline old tired Posts: 8517 genoa city wisconsin Gender:	Re: running lean/hot Reply #24 - 09/10/10 at 08:40:42 That your running a little to rich.
Back to top	william h krumpen IP Logged

ralfyguy Serious Thumper Offline Posts: 932	Re: running lean/hot Reply #25 - 09/10/10 at 10:30:16 That's kinda how mine runs. Also I must say, that I am one of the ones that doesn't have ANY discoloration on my exhaust. Does that indicate it runs like it's supposed to?
Back to top	IP Logged

Serowbot YaBB Moderator ModSquad Offline OK.... so what's the speed of dark? Posts: 28660 Tucson Az Gender:	Re: running lean/hot Reply #26 - 09/10/10 at 10:38:29 bill67 wrote on 09/10/10 at 08:40:42: That your running a little to rich. +1... cooler air, lower humidity, and lower elevation, all make you run leaner... If your bike runs better in these conditions,... you are generally a little too rich... ...
Back to top	Ludicrous Speed !... ... ... IP Logged

babyhog Serious Thumper Offline Find a Cure for Breast Cancer! NOW!! Posts: 3802 WV Gender:	Re: running lean/hot Reply #27 - 09/10/10 at 11:54:06 I'M not too rich, my bike is... LOL But that's what I was thinking. Thx
Back to top	~ 2006 Black, Big Crank battery, HD Softail muffler, engine guard/o-ring pegs, Spitfite windshield, custom mounted Saddlemen bags, Mustang seat! ~ oh, and Hairdo by Helmet! ~ IP Logged

Tiefighterpilot Senior Member Offline Daily Rider Posts: 346 San Francisco	Re: running lean/hot Reply #28 - 09/10/10 at 20:22:36 poping (like popcorn popper) on 1 and 2nd gear... not on 3rd and higher on decel or going down hill. Pop on off. Is this the pilot or can it be main? I have 55pilot, and one size up from stock main. no washer mod, with BCB pipe (small baffle). No leaks in exhaust. KN cone filter (maybe light on oil) thanks in advance for advice.
Back to top	2007 S40, KN Cone Air Filter, BCB Pipe, BCB Fender and seat, Superbrace Fork Brace with guard, 55 Pilot, 155 Main, washer mod, iridium spark plug, no afterfire, some engine breaking noise IP Logged

bill67 Serious Thumper Offline old tired Posts: 8517 genoa city wisconsin Gender:	Re: running lean/hot Reply #29 - 09/10/10 at 20:26:53 I would try going up one more size on the high speed jet.
Back to top	william h krumpen IP Logged