82 maxim 650 problems

ok i was riding last year here and there but the last time i rode the bike it stalled on me (was idling low at 800RPM and eventually stalled out) and i had to walk it home, as soon as i had gotten home, it started right up.

Right now im noticing if i let it sit and try to cold start it, i can get it up and running with the choke on. it will warm up and when i eventually turn off the choke, it will idle at a low RPM (around 800) and eventually stall out when i try to give it gas.

After stalling, the bike will not start up for a WHILE, like 20 + minutes when i try again and then it starts up and does the same thing.

Also, when it was running last year, it would do the same with the idling at 800rpm but i was able to get it running, but i noticed when i were to pull on the throttle, there was a second delay and a sputter, and then the bike would rev up, rather than automatically revving up like it should.

I have spark plugs coming in the mail, i may have to change the ignition coils (Not sure??), i just drailed the oil and put fresh oil in, then i want to time the spark plugs and see if there's anything off rhythm.

I also am going to purchase some boots for the carburetor because i noticed the boot on the right side is starting to wear away (small little cut in it, but nothing severe) and i think that may be the problem.

Anyone know what the problem could be? Too much air from the boot being worn a bit? too much gas? carburetor problem?

When i bought it off the guy it didnt have any problems, but slowly developed these problems..



picture of boot that is wearing

 

looking at this you say boot wearing have you checked yoiur boots for any damage and when bike cold rubber is hard as bike warms up it becomes softer any any cracks may be opening up and sucking to much air or something

iust an idea i am new here and not a mechainc but it is an idea

 

while your at it your gonna have to bite the bullet and rebuild the carbs. It should be done anyway and maybe the source of your issues to begin with.

 

So clean and/or rebuild carbs

What else could be the cause?

Going to replace the boot(s) most likely, the oil is changed, spark plugs soon, any other ideas?

Going to also put a fresh tank of gas in the tank

 

You have lots of reading to do. You really want to start off in the FAQ Suggestions part of the forums. There are really great write ups about where to start with your bike. The advice if pretty much always the same.

If you don't already have one get a manual. Read and study the posts here and you'll be amazed. People here are very helpful but lots of what you want to know has been asked and answered. I'm no great mechanic but I can feel like one after reading the how to posts.

Good luck

 

Carbs need thorough cleaning. You're running on the enriching circuit, and not getting enough gas through the main jets.

Dave F

 

hogfiddles:

Purely for my own education...

Would spinning the idle adjustment screw work as a temporary fix here?

Why does the bike take 20 minutes to start after dying?

OP:

You can spray starter fluid at the boot when it's running and see if the engine revs to see if the boot is a serious concern. Some silicon should work as a temporary fix, if they are indeed letting in extra air, if I'm not mistaken...

Definitely sounds like carbs, though.

 

I'm curious as well. And, it's not an exact time where it just "starts" but if i let it sit, it has a WAY better chance of starting up rather than if i kept trying to start it.

When i keep attempting to start it, i can hear the engine turning over but it just wont kick. If i let it sit for say, 20 minutes and do something else and come back, try it again, i can usually get it up and running, start to warm up, but it eventually dies.

Yeah, i've known about spraying fluid on the boot, but i havent been able to keep the bike running long enough! lol. Next time i get it up i'll try that and see about the boot.

I have new plugs coming in the mail and have to change the front brake pads anyways, so the next step will probably be to really clean the carbs and see from there

 

Get the valves in spec.

Check compression.

Clean and service the carbs.

Properly ("wet") adjust the float levels.

Bench sync.

Running vacuum sync (with YICS blocked.)

THEN tweak mixture screws.

IN ORDER. And don't skip any.

There IS NO "quick fix" for your issue. How long it takes you to get it running right will depend entirely on how long it takes you to actually do all of the above.

Take shortcuts and you'll be fighting with it for a while (until you do it right.)