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General Category >> Rubber Side Down! >> 2007 S40 stalls. Bad smell from exhaust.
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Message started by Thomas on 07/07/14 at 12:42:51

Title: 2007 S40 stalls. Bad smell from exhaust.
Post by Thomas on 07/07/14 at 12:42:51

Thanks for this amazing forum, about great bikes. My wife bought a used 2007 S40 w 5000 mi. on the odometer last year after the saftey course.About 5600 now Ran great until recently. New battery installed .New gas .seafoam . Recently it has been stalling at stop signs , usually after riding about 15 min. I ride behind the Suzuki and have smelled a burning , plastic or some unusual smell (not standard exhaust smell )from the exhaust before this happens.she says it struggles before it stalls. I haven`t had this happen to me ,and I do take it out.It starts but stalls again soon when stopping or slowing. We brought it to a local bike mechanic who removed and cleaned the original petcock. Said it was not clogged or dirty. I am a bad mechanic , but can do basic oil/air filter changes. I am going to try some of the tips on here , like testing the petcock and other checks to try to eliminate things.But if anyone has an idea where to start from my description I would appreciate it. Limited time, and tools for this makes me ask if are there any recommended mechanics in the greater Waterbury, Connecticut area if we need one? There are some solutions here I would have a knowlegeable person do. I know a Suzuki dealer within 15 miles , but would much rather have a Raptor savvy guy.I`ve been there before and was not impressed, with other motorcycles. Thanks!

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by justin_o_guy2 on 07/07/14 at 13:47:58

Flash lite,look In the exhaust.

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by BalingWire on 07/07/14 at 13:55:33

"[...] burning , plastic [...]"

That is often an indication of electrical problems, with hot wires melting insulation.

If it is causing the bike to stall, something may be affecting the ignition system. Have wires fallen on top of the hot engine? Maybe the rectifier isn't regulating voltage down properly? Although it seems like a fuse should blow with that problem.

Is a hose, maybe the vacuum hose going to the petcock, getting against the engine and melting?

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by Thomas on 07/07/14 at 16:58:33

Its not a melting issue.I did look around with a flashlight. Checked for anything obvious. It seems like I`ve noticed the smell before its going to stall. burning plastic is probably not the best description. More like an uneven burning of fuel or something. But its noticable usually before it stalls. I`m riding behind it or it probably wouldn`t even get noticed.Drove it today about 10 miles and it ran fine with no hesitation or stalling. I even though maybe the kickstand was loose or it was being pushed down a little causing the stall. , but I did that and its different Thanks

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by Yoshi on 07/07/14 at 18:10:39

make sure your idle is nice and steady or at about 1200 rpm

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by engineer on 07/07/14 at 18:10:41

This is probably way off base but could the brake be dragging at times, getting hot, making an odor and stalling the bike?

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by verslagen1 on 07/07/14 at 18:25:04

Test your petcock and check the vac line for gas.

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by Serowbot on 07/07/14 at 18:26:31

Is the Seafoam still in there?...

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by Kris01 on 07/07/14 at 18:30:50

How much Seafoam did you use?

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by Thomas on 07/08/14 at 02:02:58

I used 2 ounces of Seafoam a few weeks ago.. Added gas yesterday so probably quite diluted by now. Stalled before the Seafoam addition though. I will try to check the petcock vaccum as described here.The smell to me seems to be from the exhaust,and associated with the stalling. Like a new cars catylitic converter Hard to start after stall , but starts . Idle seems fine , steady and even

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by Seaweednh on 07/08/14 at 03:27:06

Have you tried re-starting it in the prime position? I had the same issue with my bike stalling and it was the petcock. As for the smell, we are now use to the smells of catalytic converters but when the came out they stunk. Now we can smell non converter and they stink.

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by Thomas on 07/10/14 at 01:49:05

Does the Raptor 660 fit a 2007 S40? I see the listing for the years it fits stops just short of it.?

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by Dave on 07/10/14 at 04:24:34

I don't know what you are looking at that lists the years....but what you want is the official Yamaha Petcock. If you are looking at an eBay listing.....if it does NOT not have the Yamaha part number and show the petcock with the white box it comes in from Yamaha, look elsewhere. You need to see the white box with the part number 5LP-24500-01.

http://www.ronayers.com/Search.aspx?k=5LP-24500-01

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by Thomas on 07/10/14 at 11:25:51

Thanks Dave for the link.I`ll use it. I searched on Google. I`m going to order some parts and try to spend some time on checking everything out, and use some of the information I read here. Its been a great bike for usso far.I just need to learn to maintain it or find somebody in CT that knows these.

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by 1st2know on 07/10/14 at 19:55:15

6B6962696069657F0C0 wrote:

This is probably way off base but could the brake be dragging at times, getting hot, making an odor and stalling the bike?

This was my hunch too.

I had similar symptoms this year. Stalling, could not easily push the bike out of parking spots, smell of burning plastic while riding.
I loosened the rear brake cable, then it started acting right, but the rear brakes didn't work well (duh).
Turned out the rear break pedal return spring was not in place, it was just dangling around the motor mount. Whenever I would release the brake pedal, the weight of the pedal would hold it down just enough to pull the cable.

I suspect the burning plastic smell was coming from the pulley cushions.

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by Thomas on 07/12/14 at 08:45:21

I`ll check this out. The brakes seem fine and work properly. I`m just learning how to maintain this bike.Thanks for your tip.I`m going to check everything I can find on here and replace a few parts anyway.

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by Thomas on 07/17/14 at 12:43:52

OK I just got some time to look into the stalling problem. . Put the bilke up and checked the sight glass. Seemed overfull. Smelled the oil . Gas. I pulled the plug on the tube coming down and out under the bike . Got about a 2" puddle of gas/oil. So I drained the tank. I plan on rereading all I can on here, then trying to remedy this.Ordered a Raptor petcock, plug and oil+air filters. I have 5-30 Mobil 1 . Is that Ok or should I use a motorcycle oil of a different weight? Anyone have any tips or comments? I will read the forum again of course. Thanks 2007 s40 5600mi.

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by verslagen1 on 07/17/14 at 13:19:22

446B716A6F636C3735020 wrote:

No

I recommend Rotella T or T6 instead.

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by Thomas on 07/17/14 at 13:40:47

Ok Great. I`ll get that ..Are additives to oil recommended or is using a recommended one and regular changing OK. I`ve found answers to most of my questions reading the forum and tech section..I`ll tackle the bike as soon as I get all my parts.
But people do have tips and opinions,so I welcome any.

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by verslagen1 on 07/17/14 at 14:35:34

opinions vary, I use it straight and replace often.

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by justin_o_guy2 on 07/17/14 at 15:46:21

Rotella,,cheap and effective.

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by Thomas on 07/17/14 at 17:53:58

Does the Raptor petcock come with a new gasket?

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by jman on 07/17/14 at 18:05:49

5A756F74717D72292B1C0 wrote:

Does the Raptor petcock come with a new gasket?

I'll know if BikeBandit.com ever gets around to processing my order and shipping it out.... >:(

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by Seaweednh on 07/17/14 at 18:16:44

012E342F2A26297270470 wrote:

Does the Raptor petcock come with a new gasket?

Yes, comes with the gasket/O-ring in place.

Title: Re: 2007 S40 stalls. Bad smell from exhaust.
Post by justin_o_guy2 on 07/17/14 at 19:19:51

4C4B4748260 wrote:

[quote author=5A756F74717D72292B1C0 link=1404762171/15#21 date=1405644838]Does the Raptor petcock come with a new gasket?

I'll know if BikeBandit.com ever gets around to processing my order and shipping it out.... >:([/quote]
Makes the walk into a Yamaha shop a happy jaunt..