Discussion in 'Mechanics Garage' started by bigoledave, Jan 13, 2018.
thanks very much......i am starting today to get the carb unit off..
I found this "Billy C."carb rebuild service in Texas on another forum.
Any feedback? It looks like I can send him my 4 carb assembly and for about
$300 he does a so called "pro rebuild".
I removed the carb assembly yesterday. In doing so, I inspected all rubes from tank to carbs..no issues, good tubes..no leaks..etc. I have rebuilt a lot of car, mc and marine carbs in my life....and did take these apart
two years ago. But, being lazy and retired, I am aga....thinking of my options:
1) Spend $100 on carb rebuilt kits ( K and S good?), take a day to strip them down, clean with aerosol/small tube car cleaner, re-assemble.erm
2) I saw some ads on Google for guys(shops?) who proclaim to be carb gurus and have ultrasonic cleaners.
Cost including shipping seems to be in the $300 area.
Bottom line....I would save about $200 if I "rebuilt" them myself....but am attracted to the idea of
the ultrasonic cleaning given the big symptom list my bike has right now. Also, someone who does
carb rebuilding as a business "should" be more skilled than yours truly in doing a first rate job.
Comments appreciated,... -Dave *************one other thing....when I pulled the plugs out,
all four where pretty darn white....and two of them still had shininess on the round exterior
of the plug tip. I put these plugs in only 10 miles ago but it seems strange the abscence of
any tan color. Another strange thing is how loose the plugs were ( did I not tighten them
when I put them in???) Obviously this would be a cause of poor compresion and /or
poor spark plug grounding. Right now I am going to the simple crank it with no
plugs in and see what kind of sparks are generated, the truth is I am still not 100 percent
convinced the symptoms I have are due to carb issues or "electrical-spark".
Ok..Ok...I will rebuild the carbs...just bought the fancy kit x 4
K & L Carburetor Repair Kit - 00-2439
I also have an ultrasonic cleaner, do alot of work from this forum, and my usual carb cleaning rate is between $195- $225 (+any replacement parts needed) +return shipping (about $15-$20).
2 week turnaround time.
>>>>>>>however, the one second burst of full power you mentioned suggests an electrical problem, so check for sparks on every plug lead.<<<<<<<
Ya know....all this is not rocket science. An internal combustion engine needs about a ratio of 15 parts air to one part of fuel..right? Having a boring afternoon I finally bit the bullet..gave up all ideas of paying someone out of state $300 to clean my carbs and started work. Before I removes one screw, I did the simple spark gap test..cranking over and seeing the four sparks..and what gap they would span. All four threw massive blue sparks about 1/2 inch. "it's not the ignition dummy".....back to carb culprits. I started removing the bowl covers and was thinking.."duh..ya dummy..I bet this might make it run reeeeeel crappy!" I attached some pics...the fuel pickup brass orifice is TOTALLY plugged by some powdered debris in TWO carbs..the other two are partially blocked. (Gee..I wonder if this affects performance.) I probably could have messed around and got it running OK without buying anything!..but sprung for four carb kits (K -S full kits) as I just saved myself some good dough I could spend on some french good wine to the tune of $300.
Bottom line..as the bike was mostly sitting for a year or two, I bought some pricey "fuel system cleaners" and added them to a mostly empty fuel tank...with ZERO improvement in how it ran. Then.....................
Now I see in hindsight that if I had trusted my instincts..realized the carbs were FUBAR and just started work instead of "theorizing" it to death I would be riding today. So..no huge rush..I get the kits in a week or so and will be on the road then. Do I need ultrasonic cleaning? Well I need 85 dollar wines too ...but I bet I can get by with the kits, compressed air and two big cans of spray carb cleaner with those cool small red tubes. ..Cheers
Good work ! avoid getting cleaner spray near the rubber slide diaphragms. lacking ultrasonic, carbs must be cleaned by hand, using green scotchbright or similar and lots of rubbing to remove deposits.
Mine look awesome on the exterior..the bike is always garaged. I think a brass small wire brush and the spray "Carb Cleaner" will easily remove the strange powdery stuff seen in the fuel bowl. Internally..the carb spray and compressed air will have to do. If I had the interior ultrasonically cleaned I could maybe go 134 instead of 129. Life goes on. Thanks for the comment. -Dave
Well done Dave,
I disagree - I think you made a smart choice to get the kit..
With the carbs in that condition, its a wise choice to fix it once !!
like the pics - they made me laugh....
I have been traveling ...and now am back to finish re-assembly of my now clean carbs. I used a lot of spray choke cleaner and the K and S wire cleaner set ( very cool) I am pretty confident that all the passages and jets are clean. So..I have reassembled the carb assembly ...but..I am confused over the vacuum cup/spring/cover assembly.
I see a tapped hole in the outside cover.. in the center ...on the inside. Yes..I do have four screws that fit this hole also, each one identical to the 3 x 4 screws which mount the covers. I am pretty meticulous and am sure I have not lost any parts...but am confused about the tapped hole and the screws I have left over which fit them. I have either lost some parts..or see that the screws go in to the covers and .....act as a "stop" for when the vacuum cup moves??? I am missing something here...... Explanations please? Thanks......Dave
How about a photo, Dave ????
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