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having issues with carbs

  • Thread starter Thread starter mottacycle
  • Start date Start date
M

mottacycle

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After cleaning my carbs out I'm having backfiring out of my #2 and #3 carbs... also my father in law over filled my bike with oil and now it's smoking like crazy... I dropped out the oil and and fired it up but now I can't get it to idle without backfires and when I tap the throttle it cuts out and dies... I'm kinda baffled..
I recently just rebuilt my top end haven't even got the chance to ride it yet.... I've done everything I can think of up to this point bench synced all carbs just a sec ago goin to put em on the bike and try to warm it up so I can vacuum sync them... but that is even if I can
 
Did you follow the carb rebuild tutorial and fully tear down the carbs? Soak the carb bodies and pieces in carb dip? Replace all the O-rings? Verify all the passages and jets are open as described in the carb rebuild tutorial?

Did you purchase real K&N or Ape pods? Install a Dynojet or Sigma jet kit to go along with the pods?

On the ignition side, did you check resistance on the plug caps? Snip off a small piece of the ignition wire and screw the caps back onto the wires assuring good contact?
 
No I haven't done a full tear down because it ran fine before the rebuild. This is what I have done and new parts
Pods modify
Ricks rectifier and stator
Top end rebuild
Emgo coils 4 ohm
New oil filter
2In1 Mac turnouts
Ngk plugs and caps
New head gasket valve cover exhaust gaskets vesrah
Viton valve stem seals
Grinder seats valves and head face
So I guess the carb rebuild is next I have new o rings on intake boots already but my thing is I had them running and synced before the rebuild
 
Also I made sure all passages were open with compressed air when I took the carbs apart but like I said I haven't taken them apart down to individual carbs
 
Rejetting for pods involves more than just changing the main jets. A Dynojet kit is highly recommended. Also, make sure the pilot jets are open, the choke circuits are open, etc...
 
My experience with stuff already on the bike is that until everything is something you put (or had put) there with proper care, it ain't right. This goes especially for carbs when the flow in/out is not stock. That said, a nice air leak can give you a lean condition.
 
Alright I'll get the carbs fully tore down and order a rebuild kit from z1 and also the jet kit
 
mottacycle said:
Alright I'll get the carbs fully tore down and order a rebuild kit from z1 and also the jet kit
Click to expand...

tkent02 said:
Waste of time and effort.
Click to expand...
You don't need "rebuild kits" from ANYWHERE. They are usually about $25 or so each, usually contain parts of questionable quality, and don't contain all the parts that you DO need.

There is a guide on BassCliff's site that shows how to rebuild the carbs, it is also linked in Nessism's post (#8). The only parts that are usually needed are bowl gaskets and an o-ring kit from cycleorings.com. While ordering your carb o-rings, be sure to get the ones for your intake boots, too. Splurge, get the stainless bolts that hold the intake boots on. All together, you will spend about the same as ONE "rebuild kit".
 
Ok I've read over the carb rebuild and I am goin to need the o ring kit also the dyna stage three... better pods as well
Thanks for the advice I appreciate it.
 
I am interested in this as well...I am having a lil stumble just off idle and need to clean it up. I have done very similar items as you have done!
 
I'm doing my carbs too. I recently bought a used '82 GS850L. Not sure when the last owner had the carbs off but 4 of my diaphragm cover screws are stuck bad. Impact screwdriver, Blaster, or vise grips trick will not get them loose. Going to get a EZ out kit tomorrow. The float bowl screws popped loose rather easy. I'm right behind you Mottacycle :) I have ordered the O ring kits from cycleorings. Got an email from Robert they are on their way. I also got the hex bolts for the intake boots. Now wished they had the hex bolts for the diaphragm covers as well.
 
Your local hardware parts store has them Bill. The impact driver will get them out but it takes some serious persuading; I recommend having someone else hold the carbs upright while you carefully work on the screws.
 
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