FZRSupport: the FZROnline Archive

I need to clean my carbs on my 95' FZR600 but was wondering what kind of task am I looking at? I am going to change the oil as well but I printed off the how-to for that. The bike idles funny and whenever I first start it and if I rev it after I start it than it looks like it is spitting some oil out of the exhaust. Not 100% sure its oil but I dont know what else it can be. Im thinking once I change the oil and clean the carbs it might fix my problem. What you think?

Run some seafom through the carbs first. It may be a minor build-up or blockage that the Seafoam can dissolve.

Seafoam is available at AutoZone or most auto places - white can with red lettering.

+1 on the seafoam, magic stuff.

If it's idling funny you might have a plugged up idle jet. The idle screws may also need to be adjusted, but I would get the carbs cleaned out before I worry about those (do the carbs have a jet kit installed?). Cleaning the carbs isn't generally too difficult (I was helped by being able to see someone do them the first time). I recommend doing one at a time until you know how everything goes back together. You also will probably want to get a set of carb rebuild kits with new gaskets, float needles, etc. If you are going to sync the carbs afterwards (if you're monkeying with the idle screws) you will want a sync tool. I've got access to the fancy electronic one, but I believe you can make one out of a couple plastic bottles pretty easily.

Welcome to the forums, and post some pics of your ride!

you could also look into putting a little sea foam in with you're next oil change. I don't remember the specifics but when you add a little to the fresh oil during the change and then it will take care of a lot of the buildup inside of the engine.

http://www.fzronline.com/forum/viewtopic.php?f=2&t=1369

Sea-Foam is golden stuff. I've used it on my car every 4th oil change. it keeps the crap for building up between oil changes.

Cursed94FZR600 wrote:you could also look into putting a little sea foam in with you're next oil change. I don't remember the specifics but when you add a little to the fresh oil during the change and then it will take care of a lot of the buildup inside of the engine.

http://www.fzronline.com/forum/viewtopic.php?f=2&t=1369

Sea-Foam is golden stuff. I've used it on my car every 4th oil change. it keeps the crap for building up between oil changes.

I usually throw it in about 50mi. before I change oil to loosen up the crud.

I am going to change my oil thursday so I will add some sea foam in today or tomorrow and put around 50 miles on it before I change my oil. When I put it in do I just put it in the gas tank or where?

Read the can... it can go both in the gas tank (to clean the carbs) as well as the crankcase (to clean any sludge). The can should give better information.

Hopefully this stuff will do the trick and I wont need to take the carbs off.

Hey there,

If you do take the carbs off to clean them just know that you don't HAVE to take the whole bank apart (i.e. seperate the individual carbs). What I do is take the float bowl covers off, take all jets, needles, emulsion tubes, and pilot screws out and drop them in a little container of carb cleaner and let them soak. Pay special attention to which holes the starter and main jets go back into because other than the bore size they look more or less the same. Pilot jets are completely different so no problem there. Set the diaphragms / slides, slide blocks, floats, and all covers aside. Take the jet blocks off and set the gaskets aside. From here you SHOULD be able to just go to town with the carb cleaner on the carb bodys and jet blocks. Obviously, you need to make sure there is no residual gunk in the float bowls but also make sure to spray in all of the passageways (WEAR SAFETY GOGGLES!!). This stuff dries fairly quickly but I also blow compressed air through the passageways. Oh, and check the little basket filters on the floats to make sure they are clear of any gunk.

A couple things to watch out for when taking stuff apart:

When pulling the diaphragm covers off make sure to pull it off slowly so you don't lose the washer on the end of the spring (it may stick to the end of the spring or it may stick to the needle) and also the little o-ring up in the corner (between the carb body and cover). Those suckers will fall off without you even noticing!

When pulling out the pilot screws there should be a spring, a metal washer, and an o-ring (in that order from outside going in). Make sure you have everything. The o-ring has a tendency to stay inside there. I would fish it out so it doesn't get doused with the carb cleaner.

Make sure when pulling out the slide block that the round rubber gasket comes out with it.

Basically, just do everything slowly so you can see how it comes apart. You may want to do just one carb at a time until you're confident that you know where everything goes.

When putting the floats back on you'll need to make sure they're at the correct height. Just do a search on "float height" and you should find a bunch of stuff.

Here is a link to some photos that should help:

http://www.fzronline.com/forum/gallery2 ... itemId=896

As far as sync'ing goes, you can get away with a good bench sync. That's what I do and it seems to work very well. I do have a sync gauge that I plan on throwing on there at some point to dial things in a bit more tightly but truthfully - the bike runs great as it is!

Do a little reading and check what some of the other fellas are doing and just take your time with it. It's actually very satisfying to do this work and clean carbs do wonders for the bike!

Good luck!
Brandon

Here are a couple more good links for you:

http://www.fzrarchives.com/ipb/index.php?showtopic=8141
http://s93420228.onlinehome.us/fzr/carbs/

While the carbs can seem daunting, once you do it once its way easier, and while fzrbrandon is spot on, you might try just cleaning out the bowls and the jets and blowing carb cleaner through the rest of it first, and putting it back in see if it works before you split the things in to a hundred pieces. Some times all you need to do is blast them out and then run it and it will blow the rest of the crap out.

space_weazel wrote:While the carbs can seem daunting, once you do it once its way easier, and while fzrbrandon is spot on, you might try just cleaning out the bowls and the jets and blowing carb cleaner through the rest of it first, and putting it back in see if it works before you split the things in to a hundred pieces. Some times all you need to do is blast them out and then run it and it will blow the rest of the crap out.

I agree with this also on BOTH counts. It IS definitely easier the second time around and they may only need a few squirts of cleaner and some air blown through. My problem is that I'm too darn an*l retentive!

Brandon