TOPIC:

swest wrote: Pics of the plugs?
Steve

Main jet is too rich it doesn't really want to ring out. I'll go one step lower

When I was burning oil, (bad seals) I went down two steps on the pilots. Did a valve job and it was too lean. Wouldn't run for SHT. The exhaust was loud and hollow sounding. Went back up and it was back to normal. Then I started on the mains.
Steve

Check your valve lash.


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TexasKZ wrote: Vapor lock is usually the result of the fuel line or carbs getting really hot, causing the fuel to boil in the line. This is pretty rare on motorcycles since the fuel lines are well insulated (rubber) and the carbs are rubber mounted. What more commonly happens is that the fuel line has a small kink, or the wrong type (paper element) fuel filter was installed. Neither seem to be the case here.

unfortunately the aluminum intake manifold can get very hot and transfer the heat to the carb if the rubber connection to the carb is small enough to allow the manifold and carb to contact. There can also be the problem of fuel condensation on the aluminum intake (I get about 10 ml inside of mine during normal operation with a much smaller piolet, and much leaner low throttle range. .The large size of the piolet and high needle position may be preventing the excess gasoline from dispersing from inside of the intake manifold at idle or low-mid throttle. I personally have found that middle needle clip position to be grossly rich at low throttle with any reasonably sized main jet. It definitely looks like you are on the very rich side but That's about all I can offer.

thank you everyone for the help.

I should also add that every time this occurs it's during during decel. so if the slide is closed no matter the rpm at your utilizing the pilot circuit of the carb correct?

if so it might be somewhat safe to say my problem is fueling with the slide closed

The main and needle will actually have an effect on the piolet at low throttle position .

clip on top notch of needle is best. throttle response is perfect. but after 15 miles or so it dies out still won't restart


while its trying to restart.. it'll fire for a quick second then continue not starting

and also the starter makes this horrid noise. def gears grinding. doesn't really do it when it cold, but when warm it does. and if (while cold) you give it throttle while starting it makes the clunking sound.

something in the starter? still doesn't solve why I'm dying out on decel 10 miles into a ride


edit: I just went to go start again where I left it in a parking spot, maybe half hour later. fired up idled for about 20 seconds went to pull out of spot gave it slightest throttle then died and won't restart. seems flooded

lewisdg192 wrote: ......I just went to go start again where I left it in a parking spot, maybe half hour later. fired up idled for about 20 seconds went to pull out of spot gave it slightest throttle then died and won't restart. seems flooded

Sounds like you did not let it warm up before trying to ride it. 20 seconds isn't enough time for these bikes to come up to operating temperature. Ed

650ed wrote:

lewisdg192 wrote: ......I just went to go start again where I left it in a parking spot, maybe half hour later. fired up idled for about 20 seconds went to pull out of spot gave it slightest throttle then died and won't restart. seems flooded

Sounds like you did not let it warm up before trying to ride it. 20 seconds isn't enough time for these bikes to come up to operating temperature. Ed

it's 90 outside today and I rode 20+ miles within prior half hour to this happening

duh moment, just seen your compression test post. not sure where else to go, from what I have seen it is super rich. what piolet do you have?

lewisdg192 wrote: it's 90 outside today and I rode 20+ miles within prior half hour to this happening

You're right, that certainly would have warmed it up to normal operating temperature. Ed

punisher11b wrote: duh moment, just seen your compression test post. not sure where else to go, from what I have seen it is super rich. what piolet do you have?

30 pilot top clip of needle. I tried a 27.5 and it was hunting around to return to idle


the alum manifold might have something to do with it. it's hot after shutdown, and so is carb. kinda. but I can see fuel in the fuel filter building up, almost as if there's an air pocket in the carb and fuel won't flow into it. I don't know

I'm going to try soaking timing advancer down with pb