SuzukiSavage.com - Print Page

SuzukiSavage.com
/cgi-bin/YaBB.pl
General Category >> Rubber Side Down! >> Bike ran worse in prime during petcock test
/cgi-bin/YaBB.pl?num=1308440707

Message started by Classic650 on 06/18/11 at 16:45:07

Title: Bike ran worse in prime during petcock test
Post by Classic650 on 06/18/11 at 16:45:07

Hi Everyone,

I blocked off both ends of the vac line & ran it in prime. It didn't stay running. Any other ideas why I'm getting fuel in the airbox? I smelled the oil and luckily there is none in that.

Thank you

Title: Re: Bike ran worse in prime during petcock test
Post by Serowbot on 06/18/11 at 17:05:10

Either your float is sticking,... or the float needle seat is dirty or worn out..
You'll have to pull the bottom of the carb off... easiest if you pull the carb completely and do it on a bench...
The four screws can be a booger...

If you're not at all up to doing that... You can try some Seafoam in the tank. It might dislodge or clean some gunk that's blocking the seat, but it's a longshot...

PS... smart move, checking the petcock first... ;)...

Title: Re: Bike ran worse in prime during petcock test
Post by Classic650 on 06/18/11 at 17:28:42

Thank you Serowbot. I have been using the Seafoam recently because it feels like it's losing power too. That along with high test seemed to improve how badly it had been running, but it didn't solve the fuel in the airbox. Maybe the next thing to do is bring to the shop, I'm not sure I'd be up to pulling the carb. If anyone has other simple ideas before I bring it to the shop, that would be great.

Thanks again Serowbot

Title: Re: Bike ran worse in prime during petcock test
Post by Serowbot on 06/18/11 at 18:25:41

I'm guessing that this has been a problem for a little while... but, you can sometimes dislodge a stuck float by tapping the floatbowl with a wooden dowel or spoon, or equivalent...
The floatbowl is the the bottom of the carb...

Lastest, bestest, hope before she has to go to the shop...

Anyway, good luck, welcome to the site, and don't be a stranger here...
;)...

Title: Re: Bike ran worse in prime during petcock test
Post by verslagen1 on 06/18/11 at 19:32:19

Year?
Miles?

Title: Re: Bike ran worse in prime during petcock test
Post by 2whlthrpy on 06/18/11 at 20:28:55

It has been said before on this site that mechanics do not necessarily know the intricacies of this bike. I suggest you try to learn as much as you can before/when you see the grease monkey. Know what you know and know what you dont. Just my 2 cents.

Title: Re: Bike ran worse in prime during petcock test
Post by Classic650 on 06/18/11 at 20:35:54

Thank you all!

To verslagen1: It's a 2003 w/19,386 miles.

Title: Re: Bike ran worse in prime during petcock test
Post by justin_o_guy2 on 06/18/11 at 23:33:54

If you havent looked at the cam chain yet, its really time.

Title: Re: Bike ran worse in prime during petcock test
Post by Oldfeller on 06/19/11 at 02:03:38

Jest for the fun of it, take the air filter off and give it a turn around the block to see if things get any better. Running it just a bit without the filter won't harm your engine, just don't do it for long.

Blocked up (very old & dirty) air filter elements can cause what you describe.

Title: Re: Bike ran worse in prime during petcock test
Post by Classic650 on 06/19/11 at 06:17:52

The air filter appears to be in good shape & it was recently had a tune-up.

Everyone, thank you again for all your ideas.

Title: Re: Bike ran worse in prime during petcock test
Post by Routy on 06/19/11 at 07:04:48

Quote:
I blocked off both ends of the vac line & ran it in prime
------------------------------------------------------------------
If you did exactly that, you still has a vacuum leak at the carb !

Title: Re: Bike ran worse in prime during petcock test
Post by justin_o_guy2 on 06/19/11 at 07:08:23

Ya know,,, hes Right,, ya gotta plug the little coper tube off that the vac line goes onto on the carb.

Title: Re: Bike ran worse in prime during petcock test
Post by WD on 06/19/11 at 11:44:12

That's why you should always save the little red rubber vent tube cap off your new battery. Perfect size for that useless vacuum port. And the cap will last a few years...

Cap the ports and run it on prime or get a real petcock and block the carb port. Your bike will thank you.

Vacuum petcocks always have been and always will be a dumb idea. Never have worked right.

Title: Re: Bike ran worse in prime during petcock test
Post by Routy on 06/19/11 at 12:40:51

The only 3 bikes that I know personally haven't had any problem whatsoever since '06.
If and when mine does, I'll fix it back to OEM.
IMO, I think it is one of the best features that could be put on a motorcycle, (or any gravity flo eng) for convience and saftey.

Title: Re: Bike ran worse in prime during petcock test
Post by bill67 on 06/19/11 at 12:57:37

48475D465A5C4F4D454B5C2E0 wrote:

Title: Re: Bike ran worse in prime during petcock test
Post by WD on 06/19/11 at 13:50:18

Never had one that worked correctly for very long. They always develop leaks. And the line routing isn't great, so the line (or lines on Yamaha XS series) dry out and crack pretty quick. Easy fix for that is a dirt bike cap vent line, much better base material (and you can get it in different colors).

I've had standard ones fail too, especially metric threaded HD versions. But considering the never rebuilt 1963 mechanical on my Honda still works great, I'll stick with mechanical ones.

Remembering to turn the gas off (or on) isn't that hard.

Title: Re: Bike ran worse in prime during petcock test
Post by Classic650 on 06/19/11 at 18:36:54

I capped the ports off and ran it on prime, but the bike wouldn't keep running, it just stalled it out. Is this still symptoms of a bad vac line?

I haven't done anything with the cam chain. I will though now that I know about that.

Title: Re: Bike ran worse in prime during petcock test
Post by justin_o_guy2 on 06/19/11 at 18:59:29

Is this still symptoms of a bad vac line?

Dudn sound like it to me,,

Title: Re: Bike ran worse in prime during petcock test
Post by WD on 06/19/11 at 19:02:11

Nope. Try spraying WD40 around the intake and airbox boots. If the bike smooths out, there is your problem. They are a rubber blend and can dry out and crack. If that doesn't help, onwards and upwards.

Title: Re: Bike ran worse in prime during petcock test
Post by Classic650 on 06/19/11 at 19:09:17

Thank you for your ideas WD!