Lately my bike has been running slugish (pull back feeling) at an average of 40-60 and works slightly better with the choke on. Anyone here and the same problem/know anything?
The choke is an enrichening (adding more fuel) circuit. Therefore, if it improves when you add choke, it means that you have a fuel supply issue. I would suggest a blockage might be the cause either in the fuel lines, fuel filter, carburettor jets or all three. Clean, clean and more clean. cheers Blair
Yup ... as above Tank will have a breather to prevent vacuum Tank has internal filters Inline filter if it has one Check all the fuel and vacuum lines off the carbs ....... and if all else fails its time for the carby shuffle heres the tank fixings , petcock and carby schematic
Just cleaned the tank, a bit of crap in it, anyway it's running slightly better and problems only happens 60-100
On my gsx i had a similar problem,removed the tank-drained all fuel,removed the petcock which includes the internal filter.when you re-fit the petcock make sure the "o"ring is in good nick and the tank surface is very clean,while the tank is off i removed the carbies as a pair removed both float bowls-jets -needle and seat (which have their own filters-wire mesh) also removed the top rubber diahphram and cleaned both slides with 1200 wet/dry with soapy water.dried all parts and refitted as per removal. next step is to ensure both throttle butterflies close evenly.i did this by holding the carbies up to the sun and adjusting the connecting rod which only does one carby-so back off both idle adjusters,loosen centre connecting rod then adjust each carby idle screw until you see light come through at the butterfly-just a smig,do the same with the other carby idle screw then once you are happy that both butterflies are at the same position tighten the joining rod in which both carbies will open/close at the same time.this will get you going over the full range of throttle with no flat spots etc,once that is done and your happy we can talk about fine tunning/ballancing both carbies on the engine.Hope this makes some sort of sense...Ken
I did all of that still no difference, I then took it up to a mechanic to fix the brakes (I ain't going to mess around with safety) and he said that compression was down and $$$$$.... any thoughts?
I got a set off ebay for $25. Worth having up my sleeve anyway so I invested. Check what he's telling you and if he's lying call him out. Did he do a partial strip down and actually do a compression test? BTW low compression would cause things like hard to start, erratic idle/running etc. I doubt that's your problem - sounds like carby clean to me.
Jasper,first of all ,where abouts are you in s.a-i might be able to come and help if not too far from me! next,when i got my gsx off a mate(tractor mech)he put new rings in-re used old gaskets with silicon including head and base gaskets,so when i rode it home it would not go over 40kph no matter how much i turned the throttle.got to my shed and removed the carbies as said in prev post and went through the whole lot.The round slides that go up and down connected to the rubber diaphram wher coated in black soot(old worn rings blow by and burning oil) I cleaned them with wet/dry and made sure they would freely slide up and down in the carby.if you carefully lift the slide up and let it go you should hear a slight clunckwhen it "seats".Check the rubber round diaphrams for small tears cracks ect and make sure they seal/sit correctly when you screw the top housing on. I am currently re-kitting my front master and calliper because suziki want $300 for a master cyl alone and i bought a kit for $50.mine had so much gunk in both it was making the front brake stay on which caused me to have a WOOPS (fall off ). You can save a lot of money by doing some work your-self with a work shop manual-some mechanics are good and thorough and some just have a bit of paper.My mate allways picks on me for being so thorough with all the work i do,my response is i treat every machine like an race team mechanic on a race car/bike. If i can help in any way let me know-we have all been there at some stage...Ken
@tintankaussie I'm in Basket Range close to Mt Barke, I'll try the carbies when I get it back (Mechanic currently doing the brakes) I'm also quite sure that the compression test was wrong as it takes 10-30 minutest to warm up and I doubt he did that
Hmm, I'm with Blair on this one - still smells like carby to me. But then again, the number of times that problems have been as simple as spark plug replacement - check those first lol
