84 VF500F will not start, Help?

Yes, but the set is incomplete. No base plate, one float bowl missing, two throttle linkage springs missing, choke rod missing, etc. Are you looking for specific parts, or the whole lot?

 

Creaky, carb 1 is missing some kind of pivoting plate that allows the idle screw to thread into so you can adjust it. Don't really know the name of it because I haven't been able to find a good picture with the name of it. I also need the bracket that holds the throttle cable.

 

I'll get the carbs out tomorrow and take a pic of the parts you are referring to in order to make sure we are on the same page.

 

Update! Well I cleaned the carbs and the tank. I put everything back together cranked it up and it hesisted to start but it started and then it died. It kept starting and dying. It idle at around 1000-1100 rpms. When I take the choke off and hit the throttle it dies. What can the problem be or what do I need to check?

 

Creaky, if you take a look at pictures 2, 3, 4, on post #9 you can see what is missing. All carbs that I've seen have a black knob to adjust the idle and my carb is missing that and some other brackets/levers that makes that adjustment work.

 

Update: Messed around with the bike today. I had it running and it was idling pretty high at 4500-5000 rpms and that was with choke and without choke. Bench sync the carbs again, with choke idles at 3500 rpms and without choke it shuts off. So I've decided to hang it up and take it to the shop tomorrow. If any one knows of a good bike shop in my area please let me know. I would like to thank everyone for thier advice and recommendations.

 

locomech.......my apologies for not getting the pics up today. Not much of an excuse, but I have had better days. I'm pretty sure that I have the parts you need, I'll get the pics up tomorrow.

 

Creaky, sounds good. I will be taking the bike to the honda dealer tomorrow so they can take over the repairs but I will still need the parts if you have them. Thanks!

 

locomech.......looking again at your pics, someone has definitely performed a "field expedient on the idle adjust bracket. As for the extra spring, it looks to be another "add-on" to help return the throttle to idle position. Anyway, attached are pics of what it looks like you need to get the idle adjuster back to stock factory. I think that once you get the carbs properly set up, the "add-on" spring can be removed. If the parts in the pics are what you need, PM or email your address, you can have the parts for the shipping cost.

 

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On a side note the thread pitch on the idle adjustment screw is an odd ball size and as such is impossible to find.

Keihin designed the screw with a non-standard thread pitch to allow for micro adjustment.

 

Creaky, that is exactly what I need. Looking at your pictures I see why my carb was modified. A piece of the body of my carb is broken off where the throttle cable holder bracket screws into. Can I use the body of your '85 carb on my '84 carb? If not can I use parts off my '84 carbs to repair the '85 carbs? Can you email me at
renejr0537@yahoo.com to discuss the price and shipping? How much you want for the pieces I need and how much you want for the whole thing? Thanks again!

 

It's been a while but I finally got a chance to continue working on the bike. So, I turn on the bike and let it warm up. The bike is still idling at 5,000 rpm. I adjusted the throttle stop screw and it still sat at 5,000 rpm. I mean the throttle stop screw was all the way out and it wasn't even touching the throttle and it was still idling at 5,000 rpm. I checked the pilot screws and they were at 2 1/2 turns out. I did do a bench sync according to billyc paper bench sync method. Does anyone have any ideas as to what else I can adjust or do?

 

First thing to check is that you have slack in the throttle pull cable at idle.

Maybe your mounting books have cracks or the clamps are loose causing air leaks.

What i'd do with that bike is close off each mixture screw one at a time and see which cylinders die out and which don't and look at their carbs.

 

Squirrelman thanks for the recommandations it really helped me a lot. So again I cleaned out the carbs the best I could(probably still dirty) and did the billyc paper bench sync method. When I installed the carbs back on the bike I did not attached the choke and throttle cable. I started it up and it was idling at 1,000 rpms and when it finally warmed up it sat at 1500 rpms. Previously whenever I attached the throttle cable I always touched it to make sure there was enough slack, guess I was wrong. Now it's leaking fuel from the pilot screw on 2 of the carbs. Ofcourse the carbs still need to be fine tune but at least the idle problem is solved. Once again thanks Squirrelman!:smile:

 

Well, this guy did a compression test on my bike and these are the results: R/F 175psi; R/R 140psi; L/R 150psi; didn't do the L/F. He said they should be within 10% of each other. Is this going to be a big problem to fix, should I be worry about it?

 

Just ride it as long as it runs and don't fret, but keep looking at CL for a newer bike.