running rich? - SV650.org

08-02-07, 03:13 PM

i think my curvy might be running a bit rich, i have just fitted a bmc road filter and 144djs and i think my power in lower revs have gone a bit. would this happen if it were running rich. thanks

08-02-07, 03:18 PM

Have you had it on a dyno?
What did you set the air screws to?

08-02-07, 03:33 PM

Quote:

Originally Posted by 01 sv650s

i think my curvy might be running a bit rich, i have just fitted a bmc road filter and 144djs and i think my power in lower revs have gone a bit. would this happen if it were running rich. thanks

Go for a short run and then come back and remove one of the sparkplugs - if it is running rich it will look sooty. The Haynes brothers have very good photos of what a spark plug looks like under certain conditions. What is it like on startup? When it's cold do you need choke or will it run ok with little or no choke?

I believe that the air screw really only affects tickover and maybe no throttle revs.

08-02-07, 07:10 PM

More or less like this the different effects are.

More info
http://members.optusnet.com.au/sv650...ting_Notes.pdf

http://www.factorypro.com/tech_tunin...m_engines.html

After K&N + Leovince + Dynojet I referred to Oz Mick instructions and couple of other sources and was able to get the SV vorking OK.
Now on spring i will take her to dyno for more accurate adjustment.

Got this result
http://www.moottoripyora.org/kuva-al...655%20copy.jpg

08-02-07, 09:07 PM

The easiest way to know if it's running rich or not is to stick your nose in the exhaust when it's running. A strong smell of petrol will tell you all you need to know.

09-02-07, 09:47 AM

i think i might be ok, i cant smell any petrol. i thought it might be running rich as the dynojet instructions say that dj 144s for a full system and k&n and i am running 144s for a bmc road filter, raised tank and de baffles blue flame can.

northwind · 09-02-07, 10:50 AM

The DJ instructions are all balls though

IMO

21QUEST · 09-02-07, 11:01 AM

Quote:

Originally Posted by northwind

The DJ instructions are all balls though

IMO

Here we go again

Ben

21QUEST · 09-02-07, 11:06 AM

Quote:

Originally Posted by 01 sv650s

i think i might be ok, i cant smell any petrol. i thought it might be running rich as the dynojet instructions say that dj 144s for a full system and k&n and i am running 144s for a bmc road filter, raised tank and de baffles blue flame can.

Can you list the recommendations for Main jet for the various options. IIRC, the mains you have got in are are too big(I could be wrong but it's been ages). You've only got an end can baffles in or not.

Does the BMC road recommend rejetting with the filter? Did you raise the needle?

Ben

09-02-07, 08:00 PM

If i remember correctly i have the biggest mains the DJ stage one kit has and air scres are 3 or 3,5 rounds open. Leovince SBK II without the noise killer.

Some times an occasional back firing when i ease the throttle, but seldom.

08-02-07, 03:13 PM	#1
01 sv650s Guest Posts: n/a	running rich? i think my curvy might be running a bit rich, i have just fitted a bmc road filter and 144djs and i think my power in lower revs have gone a bit. would this happen if it were running rich. thanks

09-02-07, 10:50 AM	#7
northwind Moderator Mega Poster Join Date: Jan 2004 Location: In the garage where I belong Posts: 17,082	The DJ instructions are all balls though IMO __________________ "We are the angry mob, we read the papers every day We like what we like, we hate what we hate But we're oh so easily swayed"

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Running lean / rich	sauluk	SV Talk, Tuning & Tweaking	10	15-05-09 02:06 PM
Running rich	AndyBrad	SV Talk, Tuning & Tweaking	1	14-09-08 12:41 PM
im sure its running rich	John 675	SV Talk, Tuning & Tweaking	11	03-10-07 01:21 PM
Rejetted, and WORKS! now running rich in low revs??	Saracen	SV Talk, Tuning & Tweaking	15	17-03-06 06:25 PM
What should Dr Rich / GS Rich / Rich call himself tomorrow?	Cronos	Idle Banter	29	01-04-05 03:03 PM

08-02-07, 03:18 PM	#2
Razor Guest Posts: n/a	Have you had it on a dyno? What did you set the air screws to?

08-02-07, 07:10 PM	#4
Jussi Guest Posts: n/a	More or less like this the different effects are. More info http://members.optusnet.com.au/sv650...ting_Notes.pdf http://www.factorypro.com/tech_tunin...m_engines.html After K&N + Leovince + Dynojet I referred to Oz Mick instructions and couple of other sources and was able to get the SV vorking OK. Now on spring i will take her to dyno for more accurate adjustment. Got this result http://www.moottoripyora.org/kuva-al...655%20copy.jpg

08-02-07, 09:07 PM	#5
Stig Guest Posts: n/a	The easiest way to know if it's running rich or not is to stick your nose in the exhaust when it's running. A strong smell of petrol will tell you all you need to know.

09-02-07, 09:47 AM	#6
01 sv650s Guest Posts: n/a	i think i might be ok, i cant smell any petrol. i thought it might be running rich as the dynojet instructions say that dj 144s for a full system and k&n and i am running 144s for a bmc road filter, raised tank and de baffles blue flame can.

09-02-07, 08:00 PM	#10
Jussi Guest Posts: n/a	If i remember correctly i have the biggest mains the DJ stage one kit has and air scres are 3 or 3,5 rounds open. Leovince SBK II without the noise killer. Some times an occasional back firing when i ease the throttle, but seldom.