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Message started by Odysseus on 08/12/24 at 14:34:11

Title: Bike Stalling, Only Able To Run in PRI
Post by Odysseus on 08/12/24 at 14:34:11

It's been slowly getting worse. Started out as 2nd, 3rd gear popping and hesitating, then worse when after 5 mins but sputters to a stop. Luckily, I can drive it in PRI. At first I though Petcock, but I replaced that ~5k ago. Am I missing something?

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by ThumperPaul on 08/12/24 at 14:52:24

It could still be the petcock valve, but did you check the vacuum line for holes, rips, tears, and a tight connection at the carb and petcock valve nipples?

Sounds like its not sucking.

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by Odysseus on 08/12/24 at 16:00:15

Ok, just checked, seemed fine. I got the fat tube going from Petcock to carb, thin tube going from R to L side, and 2 vaccuum lines one on either side, going away from the front of the bike. That seem right? The thin tube isn't real tight on there, has a spring clip but that's not tight at all.

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by ThumperPaul on 08/13/24 at 06:16:18

I don’t have a stock carb and I don’t remember the exact vacuum line connections. That said, you do have the big vacuum line routed to the petcock valve correctly. ANY vacuum leak will cause performance problems. Fix the loose vacuum line and report back.

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by Odysseus on 08/13/24 at 15:45:16

Welp, changed the vaccuum hose and still stalling. Although I rode it around my neighborhood switching from PRI to regular and it seemed to run a bit longer than usual on regular. I'm thinking maybe I have some junk on that screen on the Petcock. That's what it was last time. Just puzzles me as to why it doesn't last more than 4k.

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by ThumperPaul on 08/13/24 at 16:56:38

That's probably it if it's happened before. Have you tried cleaning the gas tank?

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by Odysseus on 08/13/24 at 17:19:06

Eh I just ran some Chem 12 carb cleaner in it. I'll drain it and clean it out when the Petcock comes. I was figuring on draining, rinsing with a little gas, draining, and install Petcock. Anything else?

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by ThumperPaul on 08/14/24 at 04:54:35

Dave published a great post about gas tank cleaning. I can’t find it. Maybe Dave will chime in and can share a link.

One of the steps is using dry walls screws shaken around in the tank to knock off loose rust. I can’t remember if he uses gas or water in this step to shake around with the screws. I use cleaning vinegar in this step.

When you pull the tank and petcock, look for evidence of rust (the filter screens on the petcock valve will be a stained rusty red color). You gotta get any loose rust out of the tank or it will keep clogging up.

Here’s a pic of a nasty rusty mess I cleaned up on a different bike. I doubt yours is this bad, but it gives you an idea.

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by ThumperPaul on 08/14/24 at 05:02:19

Here’s the mess that came out after shaking around some dry wall screws and vinegar for 2 days. During awake hours, shake the tank in every direction every 20-30 minutes until your arms fall off. This is from a bike that sat up about a year with minimal gas in the tank. Tomato soup!

Since you’ve been running okay and going like 4,000 miles between incidents, there is no way yours is this bad.

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by ThumperPaul on 08/14/24 at 05:16:19

Once you’ve thoroughly cleaned the gas tank, you may want to use a tank sealer like POR-15. I’ve never used it, but I have used Ospho as my final step.

https://por15.com/products/3-step-stop-rust-system?utm_source=google&campaign_id=16769245674&ad_id=591090854766&utm_medium=cpc&utm_campaign=&utm_content=141996634704&utm_term=&gclid=Cj0KCQjwq_G1BhCSARIsACc7Nxp5DXS6bk6SwCTwD94bhyqGIf-uQOgPDbhSjfBRUPujmgaSsHAeyTkaAnxqEALw_wcB&utm_term=por-15&ad_group_name=&tw_source=google&tw_adid=591090854766&tw_campaign=16769245674&gad_source=1

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by Dave on 08/14/24 at 05:17:51

https://suzukisavage.com/cgi-bin/YaBB.pl?num=1386849349/0#0

When using the Evaporust I have found that setting the tank in the sun and letting it get really warm does speed up the rust removal process. Cold temperatures really slow it down....and at 60 or below it seems to stop.

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by ThumperPaul on 08/14/24 at 05:40:12

I love your process, Dave! Thanks for sharing!

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by Odysseus on 08/14/24 at 07:50:13

Thanks to both of you! Guess I've found my weekend project ;D

Will update later~

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by Odysseus on 08/14/24 at 13:38:37

Ok, silly question: Where do you guys dump your old gas? I called my Town Hall and checked with the local Firestone, but nobody knows. Be nice if there was a place.

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by Dave on 08/15/24 at 04:19:25

I live in a rural farming area - some things are far simpler here.

I dump my old gas on the weeds in my gravel in front of the pole barn. It kills the weeds really well. I don't just dump it all at once - I pour a little bit on each one! It works far faster than those store bought weed killers.

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by ThumperPaul on 08/15/24 at 08:38:58

Don’t rat me out to the EPA, but I have a corner in the backyard against the fence that I don’t like using the weed wacker. Similar to Dave’s approach.

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by Odysseus on 08/15/24 at 13:38:00

Lol, I will likely do the similar.

Anyhoo, here's the Petcock I got--it's different than my OEM. Think this will work?

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by ThumperPaul on 08/15/24 at 14:08:26

I've tried a couple of the cheap petcock valves. They are hit and miss.

Is there a filter screen for the main fuel? I see the screen on the reserve fuel feed. The nipple on that one looks small too.

On the cheap petcock valves, I've had problems with the filter screens falling off and the o-ring seal at the tank causing a leak (really thin o-ring).

If it doesn't have the filter/screen on the main, it will pass crap through the fuel system to the carb.

Here's the one I've had good luck with if you don't want to buy the Raptor petcock valve. It has the 8mm nipple, seals well, and the filter screens don't easily fall off. Don't use the inline fuel filter included (that's a whole nuther problem).

https://www.amazon.com/dp/B0B9QSJJBW?ref=ppx_yo2ov_dt_b_fed_asin_title

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by Graybeard on 08/15/24 at 14:32:55

The cost of the Genuine article, the Real McCoy, is not that much. Having something that you can trust and depend on is worth something.

Title: Re: Bike Stalling, Only Able To Run in PRI
Post by ThumperPaul on 08/15/24 at 14:40:17

0035263E2522263523470 wrote:

The cost of the Genuine article, the Real McCoy, is not that much. Having something that you can trust and depend on is worth something.

Agree. I've bought these for non-running bikes I've bought to see if I can get the bike running before I invest more money. The real McCoy would be better for the reasons you note.