Carb (Airbox issue?)

[LOUD MOUSE]

Hey Sasha.
Ya have been working on this engine problem for a long time and I have offered (so have others) ya the best tuning information ya can get without US HAVING THE BIKE IN FRONT OF US.
That said ya constantly have tuning problems over and over and to me it seams ya don't really take the time to diagnose the problem and find the fault. (point taken below)
I've told ya (phone conversation) that engines operate with GAS, COMPRESSION AND IGNITION and all MUST BE CORRECT.
I now ask what are ya going to look at to cure the lack of SPARK/IGNITION?
Never mind the Lack of Fuel at this time.........lm

Hey LM,

With all due respect, isn't doing it yourself and learning what forums like this exist for!?
I appreciate the suggestion but thats not why I am building it myself, I want to learn and continue to appreciate/understand the bike more and more.

On a lighter note, I have identified the issue that causes the bike to idle when leaned right, the right cylinder is firing, the left is not. I checked for spark on the left plug and alas there is NO spark so I have a problem with wiring that I need to sort out... Thats where I stand now.

it would make sense that its not getting enough fuel as there isnt enough suction caused by the lack of one of the clyinders firing.. its turning over, just not igniting becuase of the lack of spark.

-Sascha

Take it to a bike shop and get it looked at by a mechanic. ......................lm

There is only one carb on a honda 305 dream... No cracks either.
No bar turning (keeping them straight through this whole process).

Anyone else!?

Assuming the lean to left/right is not accompanied by bar turning (which could point to a cable routing/pinching issue), is it possible there's a hairline crack in one of the carb castings (the right carb?) allowing fuel to go from where it's supposed to be, to where it's not, when the bike is leaned over???

Just brainstorming ....

[Sascha]

I agree that it would be awesome if you guys lived next door to me but ive gotta work with what ive got! I appreciate your concern about my ability to diagnose a problem and am happy to admit that I am learning... I believe you may have forgotten what its like to be in the early education stages of working on bikes - you have no idea whats going on until you learn through experience/convestaion. Im not discouraged at all by this, I just want to understand it to be honest. I appreciate your (and everyone elses) assistance upto this point but regardless of suggestions to consider a mechanic, I will decline to do so as I would much rather learn from this than to pass it off and never understand it.

The first thing I intend on looking at for spark/ignition is to identify if I have some sort of issue with the left plug wire as the right is getting spark but the left isnt... After that, I will take it in stride. Thats the plan, may seem pretty modest in your eyes but its just the nature of learning... Take it one thing at a time and try to make progress towards getting it right.

Anyways, I dont mean to come across as harsh but I am uninterested in discouraging suggestions, I would much rather have a discouraging situation that I work through myself than to have others suggest that I send it out for work as its just not what the whole build is about for me.

-Sascha

Hey Sasha.
Ya have been working on this engine problem for a long time and I have offered (so have others) ya the best tuning information ya can get without US HAVING THE BIKE IN FRONT OF US.
That said ya constantly have tuning problems over and over and to me it seams ya don't really take the time to diagnose the problem and find the fault. (point taken below)
I've told ya (phone conversation) that engines operate with GAS, COMPRESSION AND IGNITION and all MUST BE CORRECT.
I now ask what are ya going to look at to cure the lack of SPARK/IGNITION?
Never mind the Lack of Fuel at this time.........lm

Hey LM,

With all due respect, isn't doing it yourself and learning what forums like this exist for!?
I appreciate the suggestion but thats not why I am building it myself, I want to learn and continue to appreciate/understand the bike more and more.

On a lighter note, I have identified the issue that causes the bike to idle when leaned right, the right cylinder is firing, the left is not. I checked for spark on the left plug and alas there is NO spark so I have a problem with wiring that I need to sort out... Thats where I stand now.

it would make sense that its not getting enough fuel as there isnt enough suction caused by the lack of one of the clyinders firing.. its turning over, just not igniting becuase of the lack of spark.

-Sascha

Take it to a bike shop and get it looked at by a mechanic. ......................lm

There is only one carb on a honda 305 dream... No cracks either.
No bar turning (keeping them straight through this whole process).

Anyone else!?

Assuming the lean to left/right is not accompanied by bar turning (which could point to a cable routing/pinching issue), is it possible there's a hairline crack in one of the carb castings (the right carb?) allowing fuel to go from where it's supposed to be, to where it's not, when the bike is leaned over???

Just brainstorming ....

[Narly9999]

One video would solve this I bet. Post a Youtube video of the plugs electrodes and removing the carb and disasymbeling it. Unless I see a video I'm not goign to guess at anything. Seeing is knowing.

[pknopp]

It is tough by description alone........ I'd say a loose wire EXCEPT you say it doesn't even run right when both cyclinders seemed to be firing. (you note it cuts out when leaning) I'm assuming it's not both sides cutting out which means the "bad" side is firing at some point, BUT you still are low on power.

IMO you need to start from the beginning. A beginning for me is to make sure I have a strong battery. In my experience a weak battery will cause all sorts of problems. If you are positive that you have a good charged (and operating) battery (they can be mutually exclusive) start working backwards from there. This may seem amatuerish but I've been known to start a bike in a dark garage and watch for a spark jump somewhere. To me it's less work than actually tracking the wires down. LOL

[Narly9999]

Sascha, You want to know why it dose the leaning idle thing? Probably cause the fuel in the bowl of the carberator is very low and when you lean it just right it moves the fuel in the bowl and gets high enough on the needle jet(Main) or idle jet to allow fuel to flow. Imagne a staw in the middle of a glass, lean the glass to the side of the straw, you get more Coke. Also, when you put on the choke, It's a variable choke. Part way is part choke and so on etc. Choke does what it says, it puts a plate infront of the vinturi air flow to CHOKE the shit out of the air flow. That also creates an extreme suction on the idle jet forcing fuel up the passage ways. You fouled a plug out. The coil is the same coil so if you got spark on one side you got it on both. However choking the engine and causing an extreme change in AIR fuel mix and making it overly rich in fuel will foul plugs to the point when you check for spark you get STRANGE results. A plastic long bristle bush and dawn will clean up the fouled plug pretty good. If it's fouled. Test with a screw driver in the plug socket against the head. Get a buddy to hold onto the metal of the screw driver, it's really funny to watch them fly on their ass. 8-) Anyways, here is what I present you do. I've seen your Youtube vids and know you have a camera etc. So either video it all and strip that carb down or video chat with someone like me.

_____ Here is another post I placed in another thread you have startedon the same issue______

Sasha, I wish I was there to see things. Can you take the carb off and do a video chat with it and a couple screw drivers? Just like he was saying. It really sounds like the idle jet is clogged or the passage is restricted.(After newer post I think it's float level or soggy float) It's the smaller jet. You should be able to look through the hole in the middle of the screw driver slow and see light on the other side. Also Carb cleaner with a little tube should squirt cleaner through the passages to the openings. If you can't see though it, Poke it through with a single bristle from a wire brush. Gently! Might need to boil it for awhile in vinegar or lemon juice as an acid to help clean it out. I'm still down for the VIDEO CHAT CARB On SCREEN!! The one things in theory as to why the choke has to be on is it's not getting enough fuel and the choking of the system is causing the venturi to suck the nessary fuel from the main jet I would think. As far as the air breather being needed to restrict air flow, ***If I had an air cleaner that caused that much restriction I would take it off.*** They clean air not tune engines. I've been running my 1966 Dream 305 for the past couple week with no breather on it. *ASHAMED TO SAY SO!* Runs fine and starts with less then a half revolution on the starter.

Another theory on your Bike is the float level is so LOW that the choke is creating a suction strong enough to pull the fuel through the fueline. But It dosn't explain the higher revving unless maybe the idle set screw isn't just right. So many veriables! Always best to see what's really going on. Maybe do a video of it when you take it apart and inspect everything? I would help with the carb settings and checking via video chat on yahoo etc. I just did mine. Ended up being a reamed out pilot jet. But My Plugs were Silted like crazy! Thought it was a spark issue at first but it was just an extreme case of bad Air:Fuel Mix. But I had to go thorugh the whole carb to figure it out to. It took, compareing the new idle jet to a new one to get the ah HA Moment!

Is that a stock carberator for the 305? a PW-22 carberator?



Would also like to see the plugs, if they are very clean, it's porbably to much air.

It could also be a combination of many things. A good video of things would get you alot of AH! HA'S! =-)

[Narly9999]

And last but not least Sascha, Take the damn carb apart. You got no throttle control either? WTF? LOL, who put this carberator together? VIDEO I can just see the cable is not hooked up and the spring isn't there etc. SO the vinturi slide is floating in there on the air when you choke it out or something. ROFLMAO DUDE Take that carb apart on video Do it from start to finish. Start with it on the bike and finish with it going back on the bike. I want to see the way it's put on the bike and how the cable is attached and how you put it all back together.

[Narly9999]

Take it to a bike shop and get it looked at by a mechanic. ......................lm

There is only one carb on a honda 305 dream... No cracks either.
No bar turning (keeping them straight through this whole process).

Anyone else!?

LOL, LM is right. A bike shop will fix this issue,, Well maybe, I've known some very incompitant bike shops. roflmao.