SuzukiSavage.com - Carb question

Dave YaBB Moderator ModSquad Offline SuzukiSavage.com Rocks! Posts: 18101 Camp Springs, Kentucky Gender:	Re: Carb question Reply #30 - 03/27/17 at 18:23:54 norm92de wrote on 03/27/17 at 13:57:58: The only thing I have is Versy's belch of power on shutdown but not always. However it can be quite loud. Cool....ain't it!
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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5112 Manteca , CA Gender:	Re: Carb question Reply #31 - 03/27/17 at 18:59:29 My bike has never backfired , just a lean pop on decel during jetting.
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norm92de Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 1180 El Paso TX Gender:	Re: Carb question Reply #32 - 03/27/17 at 19:56:07 Sometimes it makes me feel powerful!
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Stefinstein

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Re: Carb question
Reply #33 - 04/17/17 at 10:57:35

Ok so I had a bit of a weather window to do some carb work yesterday and came out of it with a bit more insite.

150 main (brass washer is there), 52.5 pilot (I also have a 50 and a 55), half spacer mod, Float doesn't leak (drowned it in gas for 5 minutes), valve pin and valve body seat are clean and immaculate, valve body Oring replaced just in case, float height set at at highest spec or lowest fuel level which is up to the bowl bolt. Fuel level is consistent, doesn't creep. 100% not the bowl flooding.

After a minute or two of idle and choking again, I pulled the carb off to check the intake boot and bottom of carb to see if it was flooded, no pooling or major flooding, just wet. So this time around I took off the filter and managed to get a look down the barrel of the carb as I started and revved it, I see fuel bubbling. The main jet is splashing fuel around the needle at idle but when the throttle is opened the slide seems to be the culprit of the sputter/choking as it jerks up and down and pisses fuel from the main down the floor of the carb. When throttle is closed (even slowly from 1/8) the slide snaps shut rapidly causing the stall. This happened before I did the spacer mod and I did a thorough inspection of the diaphragm in the process and saw no issue there. Any thoughts?

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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Carb question Reply #34 - 04/17/17 at 11:05:13 I'd probably spray some soapy water, in the stream, not fan spray stream, around after I used a hose in the ear, hunting for a vacuum leak.
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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5112 Manteca , CA Gender:	Re: Carb question Reply #35 - 04/17/17 at 12:07:58 You will get your brains sucked out that way !
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verslagen1

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Re: Carb question
Reply #36 - 04/17/17 at 13:40:37

Stefinstein wrote on 04/17/17 at 10:57:35:

So this time around I took off the filter and managed to get a look down the barrel of the carb as I started and revved it, I see fuel bubbling. The main jet is splashing fuel around the needle at idle but when the throttle is opened the slide seems to be the culprit of the sputter/choking as it jerks up and down and pisses fuel from the main down the floor of the carb. When throttle is closed (even slowly from 1/8) the slide snaps shut rapidly causing the stall. This happened before I did the spacer mod and I did a thorough inspection of the diaphragm in the process and saw no issue there. Any thoughts?

The slide is sensitive to dirt and sticks with as little as a fingerprint.
I would start there, clean the slide and barrel and check again.

Then I would check all the jets as we recently found that you can interchange some of them.

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batman

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Re: Carb question
Reply #37 - 04/17/17 at 20:46:58

Stefinstein, In your first post you said "cleaned the TEV and tried a washer /shim" If you mean you added a washer to the spring side of the TEV then it is not sending fuel to the motor when you close the throttle ,spring pressure holds the valve closed .Higher vacuum formed when throttle closes defeats the spring pressure ,and opens the valve and pathway to send fuel down stream of the carb to keep the motor firing until the RPMs drop to idle speed.Without the TEV the motor will stumble and could stall.If you've added any thing to the spring side of the TEV it won't open.

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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Carb question Reply #38 - 04/18/17 at 05:43:47 Handle the slide like a halogen bulb. Clean, dry,, no fingerprints.
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LANCER

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Re: Carb question
Reply #39 - 04/18/17 at 07:09:40

Interesting. I've always taken a drop of machine oil on my finger and spread it around inside the slide tube of the carb, then wipe it with a clean shop towel (paper type), then wipe the clean dry slide with that same towel. It removes finger prints and leaves a nearly dry slide and a nearly dry slide tube. I've never had one stick.
Then again, that halogen light inside has never worked either.

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justin_o_guy2

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Re: Carb question
Reply #40 - 04/18/17 at 07:58:14

Then again, that halogen light inside has never worked either. Cheesy

Yeah, like you have seen in there when it was open.

It's not a refrigerator, dude..

I gotta admit, I was sorely tempted to oil mine,but came in and asked..
It's really strange that oiled and just wiped down doesn't stick.
Too bad about the light. It would be great to see how it works.

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batman Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 3806 osceola new york Gender:	Re: Carb question Reply #41 - 04/18/17 at 22:18:43 How much slack is in your throttle cable?
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Stefinstein

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Re: Carb question
Reply #42 - 04/19/17 at 12:49:52

Batman - the tev shim was only used once and taken out, as it made no difference, the throttle has been left off for ease of pulling the carb but generally I do have a bit of play in the throttle (1/16 turn?)

Versy - all jets are proper size and in proper locations the slide was pulled again and found to be as clean as a whistle (cleaned it again just in case).

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