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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Fuel mixture /cgi-bin/YaBB.pl?num=1302867627 Message started by IN-S40 on 04/15/11 at 04:40:27 |
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Title: Fuel mixture Post by IN-S40 on 04/15/11 at 04:40:27 Since I was was planning on working on the girlfriends bike last night I picked up a new plug for our bikes. Did the girlfriends bike first and plug looked normal, slightly brown on the tip. Pulled my plug and got this: http://i58.photobucket.com/albums/g255/cncdarren/suzuki/8ec9750e.jpg I'm thinking this is pretty lean??? Carb has stock pilot jet and a 150 main, i'm running a harley softail muffler. I run seafoam in the gas so I would think the carb should be fairly clean... :-? What do you guys think? Darren IN-S40 |
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Title: Re: Fuel mixture Post by Routy on 04/15/11 at 07:50:55 I don't see any signs of it burning. Assuming it runs good, I'm thinking if this is from normal crusing in mild weather, you may want to richen it up a tad, but only if you were to run it harder in hotter weather. |
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Title: Re: Fuel mixture Post by IN-S40 on 04/15/11 at 07:51:24 Forgot to mention I am 2 turns out on the idle mixture screw. |
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Title: Re: Fuel mixture Post by Chopped on 04/15/11 at 08:30:48 Are you having any issues with the bike... ie... popping or backfire? If not... you are way in the clear! If you are running good and richen it up some, you may end up burning more fuel then necessary. Could increase your performance, but may not. You can always try and then put it back to where it is now. |
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Title: Re: Fuel mixture Post by verslagen1 on 04/15/11 at 08:54:45 0904092E2B38382F244A0 wrote:
Unless you spend most of your time in idle, the adjustment is not a problem. Any surging? white spacer mod How's the WOT test? wide open throttle back off an 1/8, does it pick up? go up a size. |
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Title: Re: Fuel mixture Post by IN-S40 on 04/15/11 at 10:25:57 White spacer has been reduced by about 1/3. Seems to surge a little if the engine is running slower like 3rd gear doing 30mph but its is a very slight surge. Otherwise she runs fine mid and top end. I may be over reacting a bit? I just remember from my snowmobile days you wanted a nice dull brown. Not a grey or white but thats a 2-stroke, replaced a few pistons because of that.. I was thinking about pulling the carb and cleaning it in my ultrasonic cleaner but not looking forward to pulling it... |
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Title: Re: Fuel mixture Post by Routy on 04/15/11 at 19:49:46 575A5770756666717A140 wrote:
A tan color plug is the right color, that leaves a margin for a WOT run on a hot day. Mine looked more like yours, and that was 4,000 mi ago. But I seldom do WOT more than 10 seconds at a time, and I don't ride on hot days, so I don't need a margin. If you are going to do 80+ for an hr on a hot day, you mite better give it a little more fuel. |
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Title: Re: Fuel mixture Post by IN-S40 on 04/16/11 at 09:37:06 Well I only started riding last fall so i dont see myself going that fast for that long.... lol I just like to take care of problems before they become big problems, I have found its less expensive that way! I did take the bowl off the carb and from what i could see it looked spotless in there but i know tha doesnt tell all.. Since i normally ride slower, around 1/3 throttle which jet would be affecting it to be on the lean side? I always thought the main came into play around 1/2 to full throttle. |
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Title: Re: Fuel mixture Post by verslagen1 on 04/16/11 at 11:24:17 121F1235302323343F510 wrote:
You're right it does, but the main feeds the needle jet. So changing it gives more fuel to the entire range vs. just raising the needle a bit to give more gas earlier. |
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Title: Re: Fuel mixture Post by Serowbot on 04/16/11 at 11:36:19 I think you're worrying about nothing.... but,... at those low speeds, you're mostly running on pilot jet. I base my pilot size mostly on gas mileage. If you run light throttle cruise, and your mpg's are in the 55 to 60mpg range, your pilot is a good size with this engine... |
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Title: Re: Fuel mixture Post by bill67 on 04/16/11 at 13:56:45 With a cv carb you really don't know where that slide in the carb is at, at any throttle opening. |
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Title: Re: Fuel mixture Post by verslagen1 on 04/16/11 at 14:38:52 22292C2C7677400 wrote:
I always know where my slide is at... between the bowl and cap... there abouts. ;D |
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Title: Re: Fuel mixture Post by bill67 on 04/16/11 at 18:46:34 312235342B2620222976470 wrote:
I always know where my slide is at... between the bowl and cap... there abouts. ;D[/quote] Maybe not have you looked lately. |
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Title: Re: Fuel mixture Post by verslagen1 on 04/16/11 at 19:39:21 454E4B4B1110270 wrote:
I always know where my slide is at... between the bowl and cap... there abouts. ;D[/quote] Maybe not have you looked lately.[/quote] Yes, I even twist the grip and it sprung right up. |
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Title: Re: Fuel mixture Post by Routy on 04/16/11 at 19:59:04 , around 1/3 throttle which jet would be affecting it to be on the lean side? ----------------------------------------------------------------------- I can only tell you that mine was quite lean (choke test) surging badly at what I described as 1/8 to 1/4 throttle,.......about 20-30 in 2nd or 3rd gear, and the 1/2 white spacer mod fixed it beyond my best expectation. I agree,.....it wasn't all skill,....maybe I got lucky too. |
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Title: Re: Fuel mixture Post by Bernard2011 on 04/17/11 at 05:33:48 I had changed my spark-plug and put in a K&N air filter, now every time I come to a stop my engine stalls. I should say I can maybe stop once with out a problem, but after I get around the block once or twice it will stall every time I try to come to a stop, not even a complete stop at that and it stalls. Help please, I am a newbie, and was pleased at my self when I changed the spark-plug. My savage is a 2003 with less than 10,000 miles. |
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Title: Re: Fuel mixture Post by psi357 on 04/17/11 at 06:39:09 0E293E222D3E287E7C7D7D4C0 wrote:
You should start a new thread for a new question, you'll get a lot more attention. I do not have any Savage experience ......yet ;). I do have bike experience and have always paired a K&N filter with a freer flowing exhaust and bigger jets. If you just did a K&N filter only, you let in a lot more air and it will throw out your air fuel ratio making you lean. You MAY get away with adjusting you air fuel screw but I'm not sure. I'd post a new thread and someone with the actual experience can give you a definite answer. |
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Title: Re: Fuel mixture Post by verslagen1 on 04/17/11 at 07:43:18 0A2D3A26293A2C7A787979480 wrote:
If your carb is tuned right, turn up the idle speed. low idle results in almost no oil pressure. not good for the head. |
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Title: Re: Fuel mixture Post by LS-Rich on 04/17/11 at 08:45:01 777A7750554646515A340 wrote:
Plugs don't lie. Go up one size on the main. No dought about it. I think there is a 152.5. If not the 155 will be good. |
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