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running lean/hot (Read 793 times)
Tiefighterpilot
Senior Member
Offline
Daily Rider
Posts: 346
San Francisco
Re: running lean/hot
Reply #30 -
09/10/10 at 22:08:06
what would be considered tuned for performance?
thanks
DrunkenDwarf wrote
on 09/09/10 at 09:24:18:
Arnold wrote
on 09/09/10 at 08:35:39:
But isnt backfiring directly related to lean mixture?
Or rich.
Or intake leak.
Or exhaust leak.
Or tuned for performance. (POPs, not BANGs)
-D. Dwarf
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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
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Routy
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Rocks!
Posts: 2280
Winston Oregon
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Re: running lean/hot
Reply #31 -
09/10/10 at 22:11:45
I'm Rich
My bike is perfect.
babyhog wrote
on 09/10/10 at 11:54:06:
I'M
not too rich, my bike is... LOL
But that's what I was thinking. Thx
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Rich
'07 S40 Blvd stocker, except drilled OEM exhaust and white spacer mod...1/2 (.055)
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jabman
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England
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Re: running lean/hot
Reply #32 -
09/11/10 at 00:12:37
Tiefighterpilot wrote
on 09/10/10 at 22:08:06:
what would be considered tuned for performance?
thanks
DrunkenDwarf wrote
on 09/09/10 at 09:24:18:
Arnold wrote
on 09/09/10 at 08:35:39:
But isnt backfiring directly related to lean mixture?
Or rich.
Or intake leak.
Or exhaust leak.
Or tuned for performance. (POPs, not BANGs)
-D. Dwarf
tuned for performance is on the very edge of being lean but not lean, tuned for durability is just a shade richer to keep the engine cooler
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93" savage, 177.5 main, 52.5 w/holes 3 turns out , middle circlip, 6" k&n round filter, Dyna muffler, TKAT brace
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Tiefighterpilot
Senior Member
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Posts: 346
San Francisco
Re: running lean/hot
Reply #33 -
09/12/10 at 17:42:10
thank you.
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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
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Tiefighterpilot
Senior Member
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Posts: 346
San Francisco
Re: running lean/hot
Reply #34 -
09/12/10 at 18:13:08
I was smelling gas with my pilot jet at 55. I as also getting some big pops on shut off. Like a .22 cal gun fire. Popcorns popping on decel. I changed the pilot to 52.5. No more gas smell. but still some loud pops and popcorns. no leaks in exhaust and intake (double checked).
Can the gas smell be due to stock washer or spark plug not firing right? too hot or too cold?
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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
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Arnold
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Westchester, NY
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Re: running lean/hot
Reply #35 -
09/12/10 at 18:20:17
Sounds like it smelled gas with the 55 because you were suddenly idling way too rich. Did you ever try to go clockwise on the mixture screw to go leaner?
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Tiefighterpilot
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Posts: 346
San Francisco
Re: running lean/hot
Reply #36 -
09/12/10 at 19:11:29
Yes, but back firing got really bad.
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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
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Arnold
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Westchester, NY
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Re: running lean/hot
Reply #37 -
09/13/10 at 05:06:53
You know, I have kind of the same issue. I have the 55 pilot, no gas smell and no leaks but I cant get rid of backfiring once and for all. I just live with it, more noticeable because the muffler has no baffle now. In all, I cant seem to get the performance I want with the sound I want so I am stuck somewhere in between.
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Tiefighterpilot
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Posts: 346
San Francisco
Re: running lean/hot
Reply #38 -
09/13/10 at 10:23:30
have you changed out the spark plug? I am thinking it is not firing all the time. Clymers manual's troubleshooting says that backfiring can be caused by bad or incorrect sparkplug. that is what I will be checking next.
Also, do you have washer mod done?
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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
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Arnold
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Westchester, NY
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Re: running lean/hot
Reply #39 -
09/13/10 at 10:36:00
Yes, I did the 2 white spacer mod while I had the carb opened. I agree with you that my plug may be bad, especially messing with the mixture as I have been. If I must add though, taking the tank off to remove the plug is a crappy design, so far the only bad thing I found about this bike. Laziness so far prevented me to check the plug
I'll have the shop replace it when my free maintenance is up.
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Tiefighterpilot
Senior Member
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Posts: 346
San Francisco
Re: running lean/hot
Reply #40 -
09/13/10 at 10:57:08
Anyone remember the link to door mod? I can't find it. Thanks.
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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
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Arnold
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Westchester, NY
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Re: running lean/hot
Reply #41 -
09/13/10 at 11:04:35
What's door mod?
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Tiefighterpilot
Senior Member
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Posts: 346
San Francisco
Re: running lean/hot
Reply #42 -
09/13/10 at 11:53:27
This mod will allow access to spark plug without removing the tank. Open the chrom cover like door.
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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
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Arnold
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Westchester, NY
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Re: running lean/hot
Reply #43 -
09/13/10 at 11:56:34
Holy crap, I want that. Search is on...
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Arnold
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Westchester, NY
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Re: running lean/hot
Reply #44 -
09/13/10 at 11:59:30
Here it is:
http://www.jonline.org/savage/Tips___How-to_s/Tips___Tricks/tips___tricks.htm
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