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Cold #1 exhaust! Hot #2 exhaust! NO POWER!

  • Thread starter Thread starter jrciamacco
  • Start date Start date
Well if they are dry -soon after you try to run it- that just confirms that you're not getting gas in one cylinder. Without spark it should be hanging around on your spark plug for a while. Go check those above mentioned items - I don't think anyone DID mention carb syncing either, and it's likely they need it after your tear down.
 
Alrighty...Checked compression and found that my cold cylinder is 115 psi and my hot cylinder 125 psi. I checked and thier were no seal leaks so the measurements are accurate. Haven't synced carbs yet because I don't have the tool. Do I need to get the top end rebuilt?? Is that a significant difference?

--Joe
 
Well that certainly sounds like workable compression (you do have the manual to check, I hope) So it looks like the carb. Either you missed something, got a float height out of whack, clogged a jet, too far out of sync, something. I'm pretty sure your top end is okay.
 
You can bench sync the carbs as a starting position. I'd wager the one slide is significantly lower than the others.
 
nevermind I found a thread that told me how! I will got on it tomorrow!

--Joe
 
jrciamacco said:
nevermind I found a thread that told me how! I will got on it tomorrow!

--Joe
Click to expand...

A Dr. Dan Streetmentioner scholar, I see.


sorry, I can't resist obscure HHGTTG references. Good luck with the bench sync.
 
Well, I did the bench sync and it was also unsuccessful. Also, the cooling fins on the #1 cylinder are cold while the #2 fins are hot. I checked the heat of the actual exaust at High RPM's and #2 almost burnt my hand and #1was just semi-warm air. Probably still a fuel delivery problem I would imagine. So...I will again rip apart the carb and see if somethings not still gummed up or clogged. Does anyone have anthing else they can think of!?

We have eliminated...
1. Electrical (by switching coils withoout the problem switching)
2. Valves/rings (Compression #1=115psi #2=125psi)

And...I thought I cleaned the carbs the first time, but I suppose not good enough.......Its the only thing left I can think of!!!!!!!!!!!

--Joe
 
Ok...heres what I found. In my diaphram assembly the lock ring was loose and it wasn't letting my jet needle operate correctly so i would assume I was getting gas flow but not very good. So I tried to fix the problem but it still seems like it is binding up a little bit. But I tried it anyway and I got the same thing as before...but I am not sure that I can get it to move freely without some sort of modification to the plastic piece that sits on top of the needle jet. Its like I need to sand the edges a little to get it to move freely. I will try it in the morning and see what happens...I haven't gotten to the cleaning yet!

--Joe
 
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