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Message started by azjay on 10/21/06 at 08:30:09

Title: d@mn carb AGAIN!
Post by azjay on 10/21/06 at 08:30:09

yesterday afternoon was a typical yuma fall day, sunny 85*, debby and i went out to run errands on the bikes, when we got to the stop sign at the highway(aprox 1mi) her bike died when she clutched in to idle down (hmmm, thats odd, i thought to myself) ???. when she restarted, it took a few cranks, normally it pops right off (hmmm, thats odd) ???, when it lit off, a boil of black smoke exited the tailpipe (hmmm, thats odd) ???. so we decided to go on down the road and see if it would clear up. at the next stop light (aprox 2mi) she and the bike went through this drill all over again! :( at this point she is not having fun, and i'm not happy with a certain carburetor >:( rather than fight her way through town and wrestle with this thing in city traffic, we opted to return the suzuki home, and would run our errands two-up on my HD.
later in the afternoon (aprox 2hrs), i was done being mad at her bike, and decided to dig in to it, naturally the first thing is to fire it up, and diagnose the problem. it fired up and ran perfectly! so, go for a test ride, it rode and ran fine! ??? i'm starting to think i've got an intermittant issue with the needle and seat. any body else have similar issues or suggestions?

Title: Re: d@mn carb AGAIN!
Post by luken on 10/21/06 at 09:04:23

Hmm. I just cleaned my carb last weekend and for the first few days, in the morning on the way to work it would die as I downshift to slowdown. In fact it did it this morning.

I just figured it was my idel screw, I was messing with it when my throttle was stuck. Seems to not be doing it as much though.

Anyway, sounds wierd...

Title: Re: d@mn carb AGAIN!
Post by Steve530 on 10/21/06 at 10:02:56

Sounds like it's running rich. Maybe dirt or a bad float?

Title: Re: d@mn carb AGAIN!
Post by Reelthing on 10/21/06 at 13:18:29

pretty good bet the slide is sticking - it needs to be cleaned.

Title: Re: d@mn carb AGAIN!
Post by Steve530 on 10/21/06 at 14:45:47

I'd bet on reelthing's experience.

Title: Re: d@mn carb AGAIN!
Post by azjay on 10/22/06 at 08:16:59

Reelthing wrote:

pretty good bet the slide is sticking - it needs to be cleaned.

D@MN i hate the CV design! i didn't like the SUs on my mg midget either! i have new filters on it from last months carb hardships, if two fuel filters and the air filter can't keep the carb clean enough to live in the desert, perhaps an old fashioned pull slide carb from a DR650, XL650, KX650 may be in order.

Title: Re: d@mn carb AGAIN!
Post by serowbot on 10/22/06 at 10:23:31

Check for fuel in the petc0ck's vacuum line. There should be absolutely none.

Title: Re: d@mn carb AGAIN!
Post by Savage_Rob on 10/22/06 at 11:57:56

azjay wrote:

I've become quite fond of my Amal. If you decide on a different carb, talk to Lancer and see what he has available.

Title: Re: d@mn carb AGAIN!
Post by Ed_L. on 10/22/06 at 17:58:51

Toss a shot glass of two stroke oil in every other tank full, can't hurt anything.

Title: Re: d@mn carb AGAIN!
Post by georgekathe on 10/22/06 at 23:06:13

not doubting your word, sir - but anyone else - curious - does this (two storke oil in gas suggestion) do any good or as I would think it just burns the oil out of the muffler in the form of trace smoke?

Title: Re: d@mn carb AGAIN!
Post by azjay on 10/23/06 at 06:04:30

serowbot wrote:

Check for fuel in the petc0ck's vacuum line. There should be absolutely none.

no vacuum, 'nother idea i didn't like, so ours has been converted to manual.

georgekathe wrote:

i,ve been dumping my extra 2stroke fuel into my cars and 4stroke bikes for 30+ years and never noticed the smoke in the exhaust like you get with the 2stroke motors ??? as mentioned you'll add lubrication to the fuel system, not nessesarily a bad thing. i used to add a cup of marvel mystery oil to 5gal of aviation gas, when i was running it in my sandbuggy, because av gas doesn't have any lubrication additives or properties.

Ed_L. wrote:

Toss a shot glass of two stroke oil in every other tank full, can't hurt anything.

i might give that a try, we have a 2oz bottle of marvel mystery oil that we carry behind the chrome side cover, i think the tool kit is supposed to be there.

Savage_Rob wrote:

I've become quite fond of my Amal. If you decide on a different carb, talk to Lancer and see what he has available.

does it fit in the stock air box and cyl mounts? i'd like to try to keep that stuff in place if possible, which is why i was considering other carbs from similar type installs.

Title: Re: d@mn carb AGAIN!
Post by Ed_L. on 10/23/06 at 06:07:46

The wear on the carb slide has been a problem for years. One of the possible solutions from Bert's site was to add a little Marvel Mystery oil to the gas as a lube. Another option is using two stroke oil instead. Don't really know if it works but it can't hurt any. It's up to you if you want to do it, I'm just making a suggestion. :-/

Title: Re: d@mn carb AGAIN!
Post by Reelthing on 10/23/06 at 07:01:03

I do add a little bit of 2-stroke every now and then - maybe 1 oz to every 4th or 5th full tank - but it's syn castrol tts - next to no smoke or carbon buildup at far higher mixtures - the idea is to add a little lube to the slide - the biggest deal I think on the slide galling - other than the design - is air leaks around the filter or the rubber intake boots - you can help the stock airfliter seal better with some grease on the foam - of course this 10%Eth doesn't help matters any either

Title: Re: d@mn carb AGAIN!
Post by Savage_Rob on 10/23/06 at 10:45:34

azjay wrote:

i might give that a try, we have a 2oz bottle of marvel mystery oil that we carry behind the chrome side cover, i think the tool kit is supposed to be there.

I use about a teasp00n or two of MMO in about every 3rd or 4th tank. I do this to hopefully help counter the potentially ill effects of the "up to 10% ethanol" fuel that seems to be the standard fuel available around here.

azjay wrote:

does it fit in the stock air box and cyl mounts? i'd like to try to keep that stuff in place if possible, which is why i was considering other carbs from similar type installs.

When I bought the Amal Mk2 from Lancer, it came with the mounting flange for the carb (as well as a new throttle cable). I used some flex tubing from Autozone (meant for AC ducting, I think) between the airbox and the carb. The only real "mod" I had to do was to add a "port" to the carb to tap vacuum for the petc0ck. I happen to like it vacuum actuated as it is. Since you've modified yours to operate without vacuum, this is not an issue for you. This was with the Amal Mk2. You may decide on a different carb, like an Edelbrock or something similar.

Title: Re: d@mn carb AGAIN!
Post by azjay on 10/24/06 at 07:03:47

thanks! i'll certainly keep lancer's amal in mind.