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The noob experience......still needing a few ideas/thoughts being almost done

854 views 11 replies 5 participants last post by  lunty74  
#1 ·
A bit of a rant noobs should read, the rest go down to last paragraph so I don't bore you please. 87 EX500 A1, Muzzy 2 into 1 exhaust, rest stock, no fog mod, no jet mod, etc. So one day I get half power and beat my head on repairing, come here ask for help, got some rude responses and I have given some back and I apologize. You have helped greatly. So as a noob on this beautiful machine for two weeks I lose power. I went from cleaning the carbs (note to other noobs, don't move the adjuster screw and do buy/borrow a manometer[/color]) to cleaning the petcock and cleaning/checking the gas cap (all excellent things to do anyways, properly). Going to the point of tearing the top off I started with the magneto (flywheel) and stator finding that one magnet chunked off ripping a couple stator points. The reason I feel was the other noob mistake by adding oil when there was enough oil in because I did not know how to properly check my oil. Since the stator cover needed to come off it was time for an oil change and that is when I found that the 2 extra quarts I put in thinking it was empty was uhm 2 extra quarts. Wound up taking 6 quarts out and am lucky I didn't toast the lower end according to my harley shop owner buddy. I also dropped the oil pan to clean out the junk from the magnet that was missing in the cover. Again, noobs like me, buy an oil pan gasket and stator cover gasket when changing the stator and clean out the junk. Dropped a gen2 flywheel btw and a non OEM stator.

So after a fun (not!) noob experience putting my baby back together I fire her up and have a little bit of gas fumes coming out the exhaust. Hop on and go for a ride taking it to 110 mph at 8k rpm after a short drive where she coughed a little at the highest I went so I backed it down and parked it since it was to rain that night. Didn't rain so I wanted to go for a ride after work (night) and I am again back to low power. I got a parts 88 EX500 in a trade for the 750r parts bike I had so I swapped out the coils and the CDI(?) and put in new plugs. My plugs were a little rounded on one corner, some soot. Fired up with a quarter choke and some turning but I had a bunch of gas exhaust coming out again. Took it for a ride and have full power taking it to only 70. It seems to have a slight I guess you could call it a miss more of hesitation jumpiness while at constant speed but as soon as I hit it it feels good and not hesitant. I know these bikes backfire especially with a 2 into 1 and mine has since I have had it but I am concerned about the 1-2 foot fire ball it pops out on deceleration from higher rpms, the constant speed idling hesitation (neutral idles clean at 1.5k), and the excessive gas fumes coming out pipe.

I think the excess gas fumes out exhaust are from cleaning the plugged up carbs and me messing with the screw instead of the black plastic adjuster. I didn't have this exhaust issue before. I know I should do a synch and have to get buddy to let me borrow his manometer. I am also going to seafoam that carbon buildup from the one cylinder missing which was most likely a coil but do you think I should pull the valve cover off and check my valve clearance even though the bike was fine before and the next day it just lost power from the bad coil/plug wire and stator/magneto issues? How about pulling the carbs and checking resetting air/fuel mixture setting since it is an 87 and never done? Ya I could do the FOG mod but I will still have to do all mentioned except valves doing that and at the dough I am tossing out I am not ready to dish out 60-70 bucks for the filter yet. Also have to add an inline filter yet which will be in this week.[/color]

Thank You all for your thoughts and ideas. I will try to be less winded/ranty but I like details
 
#2 ·
your carbs need cleaning and reset the pilots your leaking fuel check oil in crankcase just in case fuel has got in there (hydrolock) once u sort your carbs put filter on them asap then do a valve adjustment then sync carbs or send carbs to ducatiman for peace of mind :)
 
#3 ·
Thank You. Did a carb clean and the tank yadayada. Twice again I had this issue. Full tank great running then next day nada. This last time I decided to check the air/fuel mixture set from factory. One side turned all the way in the other 1-1/4 turns. Is preset I know but I turned the full in out a 1-1/4. This resolved my high amount of fumes coming out the pipe. I also checked my new plugs. They looked clean with a slight discoloration but I made a light sweep with a sand pad flat across both ends. Started right up 1/4 choke. Went for a great ride at full power burned up a tank and a half. Next day it took some turning to start up again and I get low power. Tried again today and same thing, took some time to start and low power. It's getting leaf drop season so instead of disassembling and cleaning plugs everytime just to ride for a tank I am putting her away and probably going to pull valve cover off and check valves. It is boiled down to the plug are being pulled every time I get a good run so there has to be something "off" a bit.
 
#4 ·
this is the conundrum no filter .no sync .(will make your bike run like **** )maybe the petrol cap valve needs taking out cleaning . defo check exhaust for leaks and the rubbers on carbs ..I have my pilots at 2 1/2 turns but I got a 2 into 1 that I found a crack in the can so its y mine is burping atm
 
#5 ·
Re:

Value adjustment is foremost the most critical part of proper tuning, it's also the most overlooked.
 
#6 · (Edited)
Re:

Ghostt said:
Value adjustment is foremost the most critical part of proper tuning, it's also the most INTENTIONALLY overlooked.
fixed
 
#10 ·
Re:

There seems to be a phobia about doing valve adjustment, I'm going to call it "VALVAPHOBIA"
 
#11 ·
Doing the valves on my bike tomorrow. If you've never done it before (I have not), opening the engine does seem a bit daunting at first. I am not surprised people are reluctant to dive right in. That reluctance fades once you find out how much a shop charges for the service. Or did for me anyway.
 
#12 ·
just take your time tk and before u put the cover back on valves just recheck first by cranking the bike over by hand :)...........and its ÂŁ160 dollars in Britain for a bike mechanic to take one part off a bike so no its not cheap in fact its scandal how much they charge