This all refers to a 1997 GS 500 with unknown amount of previous owners, no matter what I'm not really wanting to put that much money into the bike for upgrades etc.
The throttle on my bike has always fallen kinda slowly so I figured it was running lean.
Done so far
- I recently pulled the carbs and gave the carb body a lemon boil and oiled (but did not replace) the internal o-rings etc. I also didn't have anything like a little piece of wire to get inside the jets, the best I could do was let them soak in mineral spirits solvent and dry them out. I cleaned the fuel passages with spray carb cleaner.
- Corrected float bowl height
- I just replaced the old leaking intake boots
- I've axed the petcock vacuum tube but forgotten to seal the vacuum tower on the carb body
On my rear fairings there's a DynoJet sticker, so I'm assuming there's a DynoJet kit in there but I have no frame of reference as to what that changes. When I pulled the needles etc there was a small washer on only one of the jet needles. Looking at the DynoJet parts list there I see there should be a couple washers?
Would like to do
- Get the jetting corrected, back to stock or otherwise
- Get the fuel mixture corrected
- Rebuild all soft bits in the carbs, clean the jets with newly acquired welding tip cleaner brushes, maybe even replace the piston valve/diaphragm?
Misc
A dealership just told me I'd need to replace the front and rear sprockets to replace the chain. I've never heard this before and it sounds like BS, is it true?
Does anyone know the tech specs on the bolts/grommet/nut in the bar ends? I went to Home Depot but nothing matched
Thanks very much
Quote from: richbomb on August 03, 2009, 05:23:36 PM
This all refers to a 1997 GS 500 with unknown amount of previous owners, no matter what I'm not really wanting to put that much money into the bike for upgrades etc.
The throttle on my bike has always fallen kinda slowly so I figured it was running lean.
Done so far
- I recently pulled the carbs and gave the carb body a lemon boil and oiled (but did not replace) the internal o-rings etc. I also didn't have anything like a little piece of wire to get inside the jets, the best I could do was let them soak in mineral spirits solvent and dry them out. I cleaned the fuel passages with spray carb cleaner.
- Corrected float bowl height
- I just replaced the old leaking intake boots
- I've axed the petcock vacuum tube but forgotten to seal the vacuum tower on the carb body
On my rear fairings there's a DynoJet sticker, so I'm assuming there's a DynoJet kit in there but I have no frame of reference as to what that changes. When I pulled the needles etc there was a small washer on only one of the jet needles. Looking at the DynoJet parts list there I see there should be a couple washers?
The Dynojet needles have 3 grooves at the top, with an 'E' clip in one of the grooves. The OEM needles have no grooves. And the number on the jet (if you can read it) is kind of odd: see if you can get that number and post here
Quote
Would like to do
- Get the jetting corrected, back to stock or otherwise
- Get the fuel mixture corrected
- Rebuild all soft bits in the carbs, clean the jets with newly acquired welding tip cleaner brushes, maybe even replace the piston valve/diaphragm?
The Buddha can get you most carb parts
Quote
Misc
A dealership just told me I'd need to replace the front and rear sprockets to replace the chain. I've never heard this before and it sounds like BS, is it true?
No, it's not always needed. Some people just replace sprockets and chain at the same time for peace of mind. Very badly hooked sprockets can damage a new chain. If the tooth profiles on the sprockets are symmetrical, I'd just replace the chain.
Quote
Does anyone know the tech specs on the bolts/grommet/nut in the bar ends? I went to Home Depot but nothing matched
Sorry, can't help you there.
Quote
Thanks very much
You are welcome very much. Hope it helps!
DJ has 5 grooves in the needle, but yes ...
Slow falling idle if its not a vacuum leak or a throttle cable hanging yes its lean.
I can get carb parts, well, just jets and O rings ... but what is lemon boil and what did it do to your carbs ?
Cool.
Buddha.
Lemon boil is just an alternative to dipping the carb body in carb cleaner. It's just boiling it in lemon juice for 20 minutes to get rid of gunk etc. Naturally I stripped all the soft and plastic bits from the machine before doing so. I got this trick from a message board dedicated to tractors, seems to have done a pretty nice job, all sorts of gunk and shaZam! were sitting on top of the fluid by the end.
Bhudda I'll send you a PM about the o-rings.
I ordered a bunch of new bits for the GS, including a throttle cable and I'll pull the carbs asap to check the needles.
Until then enjoy a brief replay of my Saturday
"doo doo doo been a long time since I've wrenched on my GS, gosh I sure would like to get back to ridin- ohhh gooood saaaave meeee beeeessssss"
(http://i5.photobucket.com/albums/y178/dyejedi/IMG_0076.jpg)
Ok, so the mystery deepens. There's no groves on the jet needle, but there are numbers on the needle jet- 773M670-3. Everything in the carbs is clean as a whistle. Guess I'll replace all o-rings and try to outsmart any potential vacuum leak.
Pic of needle please ...
Cool.
Buddha.