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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> I NEED help! /cgi-bin/YaBB.pl?num=1217699486 Message started by ed daugherty on 08/02/08 at 10:51:26 |
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Title: I NEED help! Post by ed daugherty on 08/02/08 at 10:51:26 Ok so i am running down the freeway at about 65-70 mph and the engine dies like it's out of gas...but i just filled up. I decided to try it out at 55 mph...no prob. It runs great under 60 and around town but if i get over 60mph it dies after about 10-15 miles. I pulled the petcock and it's clean, pulled the carb and installed a new main and needle. I tested and the same is true. anyone have a suggestion? |
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Title: Re: I NEED help! Post by Demin on 08/02/08 at 10:54:52 Funny,you are in Dallas too.I have the same problem at times.I think with this heat that they are vapor locking or the fuel going into the motor is vaporizing before ut hits the cylinder at high speeds. |
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Title: Re: I NEED help! Post by Sandy Koocanusa on 08/02/08 at 11:14:20 I'm no brain on the matter, but I'm told that your vacuum is least at higher throttle settings. A small leak in your vac line might be compounded just enough at that speed to goof things up. How does it do on prime? |
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Title: Re: I NEED help! Post by ed daugherty on 08/02/08 at 11:21:13 same on prime. the vacuum lines are the ones that run from the petcock to the carb? Demin do you ride with a group around here? I am looking some people to ride with and so far just alone :-[ |
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Title: Re: I NEED help! Post by Sandy Koocanusa on 08/02/08 at 11:30:02 It's the small line, wrapped in a spring, that runs from the petcock to the right side of the carb. It would be a PITA, but to determine if it's a problem with the petcock, compared to a problem after the carb as Demin suggests, you could try this: Run it on "On" or "RES" until it dies and then drain the bowl into a container. Then fill the bowl on "PRI" and drain it again. If you get less fuel after running than you do after letting the carb fill for 30 seconds or so on prime, I would submit that you have a problem upstream of the carb. If it's not delivering enough fuel to the carb, your bowl should be less than full, or empty, when it stalls out. |
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Title: Re: I NEED help! Post by ed daugherty on 08/02/08 at 11:34:26 cool thanks. i will replace it and see what happens. will it effect it if i get a longer hose? |
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Title: Re: I NEED help! Post by Sandy Koocanusa on 08/02/08 at 11:39:30 I honestly don't know. I wouldn't think it would matter, but I have no knowledge to back that up. |
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Title: Re: I NEED help! Post by rigidchop on 08/02/08 at 12:09:57 i used a longer hose, worked fine, and easier to route. |
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Title: Re: I NEED help! Post by Demin on 08/02/08 at 14:58:25 I might replace my hose,again.I just did it about a year ago.But with this heat it might have gotten hard again,just didn't notice it until it got HOT out. No,I ride alone pretty much.The only one I have ridden with is TVR_FSO from this site.Haven't met too many people.When the Harley was together,last time I was here I used to go to Strokers every sunday. |
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Title: Re: I NEED help! Post by Jay on 08/02/08 at 21:33:57 6869696C786A65687F79743F3D3D3E0D0 wrote:
There are several of us in the DFW area. It would be nice if we could all get together. We should try it at least once. A while back I posted a roll call for DFW, along with an inquiry about a get together. Got a few responses, but it seemed to die out for lack of interest. Still, a ride out somewhere for a beer and some BBQ with some other Savages would be nice. |
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Title: Re: I NEED help! Post by Demin on 08/03/08 at 07:07:53 I didn't even see the post,but I'd be in.Any time after the end of August. |
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Title: Re: I NEED help! Post by ed daugherty on 08/03/08 at 15:15:02 ok. I will see about some dates and post a new thread. |
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Title: Re: I NEED help! Post by J Mac on 08/04/08 at 23:01:40 I'm in Houston. My bike's petcock starting misbehaving in the spring in the morning at mid-range and below. At open throttle, it seemed to work. I recently converted it to manual, and the problem went away. PRI was working fine too. I really don't like that design. It gave me trouble at freeway speeds when I first got the bike until I replaced the vac line. Then the new issue started at idle - mid-range, and I nearly went insane trying to figure out what it was. |
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Title: Re: I NEED help! Post by 502z on 08/05/08 at 09:29:48 I have a 2000 savage with 7500 miles. I bought it about two months ago. The bike has been taken care of and is in excellent condition. I have the a/f mixture screw set at 1 1/2 turns out and live at 7000 feet. The bike runs great until I hit 65 miles per hour. I ride about 10 miles one way on the interstate to work. Without fail the bike runs dry on fuel when using the vacuum setting on the pet thingy. I posted my problem and was told it was the vacuum line. I replaced it and used hose clamps at both ends. The problem persists. The bike runs without fail on the gravity feed setting and has never run dry. After reading a lot of posts this seems to be a fatal flaw for several other Savage riders. What is the fix??? I don't mind the gravity flow but that eliminates the reserve and I have run out of fuel twice. Now that I know what mileage I get I know when it's time to fill er up. It just bugs me that the bike won't run the way it should on primary....what is the fix??? |
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Title: Re: I NEED help! Post by T Mack 1 on 08/05/08 at 10:01:44 282D2A2C3627352731420 wrote:
When you say gravity flow, do you mean Prime ("PRI")? The reason I ask, the whole fuel delivery is gravity flow, just in "RES" and "ON" is it switched by a vacuum actuated plunger/diaphragm. If it runs in prime (PRI), the next test is to see if it runs in "RES" to test to see if you have a varnish build up on the screen in the tank. Both "RES" and "PRI" have same fuel port in the tank. If it doesn't run in "RES" but does in "PRI", then you still have an issue with the vacuum actuated fuel switch. If it runs in "RES" then you most likely have a varnish build up on the screen reducing fuel flow in "ON" and will need to run a fuel system cleaner thru the tank. Seafoam or STP or the likes. It should say that it cleans varnish build up. NOTE: I have a 2001 w/14K miles, and have no issues going 70 mph. I use STP fuel system cleaner (white bottle), 1.5 oz in a full tank maybe once a month. |
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Title: Re: I NEED help! Post by 502z on 08/05/08 at 10:22:26 My fault. I meant to say "on" instead of "primary". I run dry of fuel on both "on" and "res" but have no problems with primary. I have replaced the vacuum line twice and used hose clamps that can be tightened both times. I doubt the issue is with my hose but I guess anything is possible. I don't suspect the carb since the bike runs great less than sustained 65 miles per hour. I have noticed to when I try to switch from "primary" to on to see if the problem persists the value has been stuck. With a little force I can move it. Maybe it needs cleaning. I'm going to limp through until it starts snowing then plan on taking the pet thingy off and inspect/clean it. |
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Title: Re: I NEED help! Post by 502z on 08/05/08 at 15:06:28 Another thing... The bike is 8 years old not and only had 6800 miles when I bought it. That means it has set a while. I was considering pulling the carb and cleaning it to just to see what it looks like. I have worked on cars both for fun and professionally but have never worked on bikes. Do you have to have a carb kit to open it up and clean it. I also live at 7000 feet and am wondering if I need to re-jet it since the air is so thin up here. I'm in Flagstaff, AZ and 1200 feet Phoenix is only 2 hours from here but I know I will never take the bike out of this elevation so I won't have to worry about burning up the engine if I set it up for the elevation. Any words of advice??? I'm anxious to get her running top notch all around! |
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Title: Re: I NEED help! Post by YonuhAdisi on 08/05/08 at 15:14:53 Pri = Prime not Primary: It is used to refuel the bowl when you drain the bowl for carb work or after it has set long enough to evaporate the fuel out of the bowl. In this position it is gravity fed. On: Is the normal operating position, it is vacuum operated which means fuel should not flow from the tank into the carb unless it is running providing the necessary vacuum. Res + reserve: It operates the same as the "On" position. It lowers the fuel pickup to be able to get the last bit of fuel, usually approximately 20 more miles worth. |
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Title: Re: I NEED help! Post by Sandy Koocanusa on 08/05/08 at 18:40:50 If I was having your problem, I would march right down to the dealer and order a new petcock. $60, 20 minutes, and you're back on the road. I don't know how big a dent $60 would leave in your wallet, but it sounds to me like it would fix what ails you. That's what I did, and haven't regretted it once. |
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Title: Re: I NEED help! Post by ed daugherty on 08/06/08 at 12:48:30 ok so i have heard of the manual petcock. what is this about? people talk about doing the petcock mod but no one tells us how? or at least i can't find it. |
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Title: Re: I NEED help! Post by youzguyz on 08/06/08 at 12:52:03 Here.. http://suzukisavage.com/cgi-bin/YaBB.pl?board=tech;action=display;num=1113631600 It's right in the Table of Contents in the Tech Docs |
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Title: Re: I NEED help! Post by ed daugherty on 08/06/08 at 20:09:55 Thanks. I knew i saw that somewhere! that's a big help |
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Title: Re: I NEED help! Post by ed daugherty on 08/07/08 at 11:21:37 I replaced the vacuum tube and still it persists. I ran it on res and on and it died but when i run it on prime it runs fine. so do you think the petcock mod will work? until i can buy a new one. |
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Title: Re: I NEED help! Post by verslagen1 on 08/07/08 at 11:31:24 There are a couple of possible problems, 1st the vac line... you've fixed that by replacing it. did you also puts clamps on the ends? 2nd... dirt or other blockage in the screens. 2 places to check, remove the petcock from the tank (empty tank) and check the screen for debree and varnish. Also, there's a screen on the float valve. you need to diassemble the carb to get at it. |
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Title: Re: I NEED help! Post by T Mack 1 on 08/08/08 at 15:24:31 544750514E4345474C13220 wrote:
So, I don't have a petcock assembly in hand and it's been a year since I did..... Doesn't the PRI fuel path run thru the RES port in the tank??? Wouldn't the screen be clogged for both?? And, the tiny screen on the carb by the float, wouldn't that cause same issue in PRI too??? Sounds like a Vacuum issue, but why??? If the diaphram in the petcock was bad, I think the issue would be flooding not starving for fuel...... If you had a vac leak somewhere else then WOT would cause weak vac at the Petcock. Here is a test to check for vacuum leak. Start the bike. Then while idling, spray WD40 around the rubber intake manifold and the other misc spots on the carb (and Petcock?). If the idle changes you found a leak. Once fixed, buy some engine degreaser and clean up. NOTE: You could use carb cleaner but that can damage some paints. EDIT: just remembered someone previously said to check all the tank & Carb vents. The idea was that, at speed, the restricted vents would not allow fuel into the carb fast enough..... but I think that would also be one of the "would also be noticed in PRI" |
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Title: Re: I NEED help! Post by Digger on 08/10/08 at 21:41:36 I've not yet had a Savage petcock apart, but isn't there a failure mode with the diaphragm or diaphragm spring where it does not fully respond to engine vacuum, thus causing a lean or no-fuel condition in ON or RES? It would have to be a failure mode where gasoline did not leak into the vacuum line. Just thinkin' out loud. |
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Title: Re: I NEED help! Post by verslagen1 on 08/10/08 at 21:56:01 leaky vac line and someone said the diaphram can get hard. |
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Title: Re: I NEED help! Post by up4fishin on 08/25/08 at 17:14:55 502z exactly described my issue. i bought my first bike yesterday! already i'm hitting the forums. :( I have a 2006 savage with 236 miles. When the switch is set to "RES" or "ON" it dies. The previous owner thought PRI was "PRIMARY" so he never used the others. I read manuals, so I tried the "ON" switch right away. Is the vacuum actuated fuel switch something that is easily replaced? I'm no mechanic. Can you walk me through it with a good description? Thanks! |
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Title: Re: I NEED help! Post by Sandy Koocanusa on 08/25/08 at 17:42:11 Replacing it is VERY simple. Some will say that there are other steps you might want to take. If you want to swap it out, I'll walk you through it. |
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Title: Re: I NEED help! Post by up4fishin on 08/26/08 at 02:17:30 let me ask as dumber question--is the 'fuel switch' the same thing as the 'petcock' people are talking about in these posts? if so, i agree it would be a simple change out. if not, where is it located and how much does it cost? would it be better to remove the petcock and hit it with brake cleaner? or switch it out first? lots of questions.... thanks in advance! |
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Title: Re: I NEED help! Post by T Mack 1 on 08/26/08 at 03:01:55 5B5E1A48475D4647402E0 wrote:
There is a rubber diaphram in the unit. Is your brake cleaner "rubber safe"? |
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