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1  Classifieds / For Sale / Re: LOTS OF PARTS: Carb, Gas Tank, Wiring Harness, Exhaust, Rims, Engine on: January 11, 2018, 09:21:57 PM
The plastic covers over the ends of the radiator?  One of mine is missing.  And maybe front turn signals?


Mike
2  General Category / Tech Corner / Re: Fuel System questions on: July 22, 2017, 09:10:00 PM
Not the plugs, they're new and the two cylinders that have a much cooler exhaust pipe are firing.  When I pull either of the plug wires the engine barely runs.  If it's a bad coil I'm not replacing it (assuming I could even get one which I doubt), because apparently I'd have to take the damn shock out to get to it!  I've had nine different motorcycles and four different ATVs and not one of them was as much of a PITA to work on as this one! 

I'm done with it.  I've got too many other irons in the fire to spend any more time on this.  I am serious about selling it.  For one I don't see putting a lot of miles on it anyway.  I can't really ride it to work because I carpool with a guy and I wouldn't want to anyway, too many crazy drivers on I-94.  I have a lot of close calls with my Sienna, much less a small motorcycle that nobody seems to be able to see.  I'm just going to have to live with the way it runs and then decide if I want to sell it.


Mike           
3  General Category / Tech Corner / Re: Fuel System questions on: July 22, 2017, 04:01:07 PM
I'm just as confused now as I ever was with this thing.  I thought I had a handle on it but it just isn't getting any better.  Earlier today I stumbled on the fact that the number four exhaust pipe didn't seem to be getting hot indicating that it wasn't firing at all.  So here I think it's not an idle mixture problem it's a running on three cylinders problem.  But when I checked it later with an IR temp meter I find that after warming ot up fpr a few minutes number one and two are at about 350 degrees and the other two are both below 150.  So I'm thinking that I either have an intermittent ignition on those two or I have a super rich mixture on them.  I give up.  I'm going to just ride it the way it is and whatever happens, happens.  I just don't have any desire or ambition to work on this thing anymore.  If anyone is near Milwaukee and looking for a CB1 I'll make you a good deal on it.


Mike
4  General Category / Tech Corner / Re: Fuel System questions on: July 15, 2017, 07:46:32 PM
Finally think I'm getting somewhere with this.  It's been iffy all along as to whether it would even start.  This morning I tried to start and had no luck.  But then I remembered that a few times when I left it sit for 20-30 minutes it would fire up. making me think that it was just too rich on the low end.  I came back to it later in the day today and tried a couple of things.  First I tried starting it without choking it all all, that didn't work despite it being about 80 degrees here.  Then I thought what if I choke it and crank it for a few seconds and then take the choke to about the halfway position.  Fired right up!  So clearly the low end is too rich which is also most likely why the idle and transition is so bad. 

I can try adjusting the idle mixture on the outer two carbs and see if it helps, not sure where I left them the last time I played with it.  The inner two though are completely inaccessible.  There's no way to get a screw driver on them, I might be able to get a needle nose or forceps on them but those stupid limiter caps will be a problem.  According to the manual the only way to get the screws out and remove the limiter caps is to remove the carbs from the bike and separate them.  There's no way I'm doing that again.  It was enough of a PITA the first time.

As far as carb synch, no.  If it was required I wouldn't do it, I'd have to take it in somewhere.  I don't have the equipment, the expertise or the patience to do it.  But I seriously doubt it would make a difference.  Number one I never changed anything that would make a difference in the relationship between the butterflies, number two when the throttle is fully open to my eye they're all in the same plane and number three when the throttle is fully closed they all touch the bore at the same time.

So I'm going to play around with the idle mixture and see if I can get it to run better at the low end.  It's rideable the way it is, especially since this bike doesn't spend much time below 5K anyway.


Mike 
5  General Category / Tech Corner / Re: Fuel System questions on: June 26, 2017, 08:24:20 PM
Well it's running.  Not happy with the way it is at low revs but at least I've got something now.  Still not exactly sure what's going on but I have an idea.  The last thing I did was button up the air box and then I realized I had not tightened the clamps for the boots between the carbs and the air box.  After doing that and after just a minute or so it started. 

I tried running it both with the air box closed up and with it open or even off as I was trying to figure out what was wrong.  I don't remember though how it ran in every case.  Now I'm wondering if my problems were because of not having it sealed up.  At first I was thinking it wouldn't matter other than running a little leaner with the cover off.  After I got it to run late yesterday a thought occurred to me.  There are tubes on the intake side of the carbs that extend into the air box so maybe running it open like that was a problem.  The problem is that I had it running several times over the course of the last few weeks and I don't remember what configuration it was in each time.

Now that I've got it running I can try to tweak the idle mixture to see if that will help with the way it runs at the low end, especially the transition from idle.  The bad thing is it's just about impossible to get at the screws for the inner two carbs.  And according to the manual you have to take the carbs off and separate them to get the limiter caps off the inner two.  There's no way I'm doing that!  I may have to just be satisfied with the way it is.  The good news is that most of the time the engine will be at 5K or better.  We'll see.


Mike
6  General Category / Tech Corner / Re: Fuel System questions on: June 25, 2017, 02:24:34 PM
Not sure which line you're talking about.  As far as the clutch, never had a problem with that before.  I'm in the Milwaukee area.


Mike
7  General Category / Tech Corner / Re: Fuel System questions on: June 25, 2017, 01:46:46 PM
Finally got everything back together about three weeks ago and I've been struggling with it ever since.  It just won't run.  The first time I started it after reassembling it it took a while to get it to stay running but it eventually did.  But ran rough under 5K or so and wouldn't idle worth a damn.  A week later when I looked at it again and every time since it just won't run above idle for any amount of time.  This bike always was very cold blooded like most bikes of the period were but nothing like this.  I've done everything I can think of to get it to run right.  I think it's time to just cut my losses and sell it.
8  General Category / Tech Corner / Re: Fuel System questions on: October 14, 2016, 07:11:58 PM
Got the JIS screwdrivers today.  They do make a huge difference. 


Mike
9  General Category / Tech Corner / Re: Fuel System questions on: October 13, 2016, 02:02:14 PM
I got that covered.  I have an iPhone, a digital camera and a digital camcorder.  I've already taken a dozen pictures with the little disassembly I've done and also am being careful to bag and ID everything.  Also plan to take careful notes.  Like I said I have all winter to get it done so I'll be able to take my time.  BTW, what material are the slides made of?  It doesn't feel like metal, it feels like plastic.  If so I have to be careful what I clean them with.  They're really sticky to the touch.


Mike   
10  General Category / Tech Corner / Re: Fuel System questions on: October 13, 2016, 12:31:13 PM
I assume I should completely separate the carbs from each other?  Initially I thought I'd try to clean them without disassembling them but from what I've read that might even be possible.  At this point I pretty much have all winter to complete it since it's already getting cold here in Wisconsin. 

I did order a set of JIS screwdrivers, they should be here in a few days.  I have the carb bank sitting in a bucket of PineSol solution after removing three of the four vacuum chambers.  Was having trouble removing the choke bracket with my non JIS tools so I'll wait on that.  A Lot of crud on the needles!


Mike
11  General Category / Tech Corner / Re: Fuel System questions on: October 11, 2016, 08:11:52 PM
Finally got the carbs off.  Took a little beating with a hammer (kidding) but I finally got them off.  This will be one of my winter projects as it won't be long before the snow flies.  It'll be a bit of a task since I've never done anything like this.  Individual, single carbs, quite a few over the years.  But never a bank of four like this.  I'll make sure to document it well and take my time.  I'm sure I'll have more questions.



Mike 
12  General Category / Tech Corner / Re: Fuel System questions on: October 11, 2016, 03:33:58 PM
Get that kit in stock, a big bottle of pine sol to soak the metal parts, and go at it systematically, taking pictures if you can. Not too tough, although there are a lot of small parts.

You also NEED a JIS screwdriver set. It looks like Phillips in the same way a 13mm socket looks like a 1/2" one. Close, but keep trying your luck and you'll find out. If you can't find one, take a number two Phillips and grind the tip slightly down. This really is important, if you want the screws not to round out.

Thanks.  I'll definitely order the kit.  The more I think about it I don't think I'll even try to run it on a separate fuel source, being the fact that the twist grip wouldn't even turn.  That reminds me, better prep my generator for winter.  Don't want to have the same problem with it in the spring.   

JIS huh?  I've always known that there were different profiles to Phillips screwdrivers, just didn't know what it was called.


Mike 
13  General Category / Tech Corner / Re: Fuel System questions on: October 11, 2016, 02:17:36 PM
I believe the fuel pump runs when the ignition fires, which is kind of backwards when you think about it.

You will definitely need to strip and clean the carbs.

Seal kits better than new:
http://litetek.co/Carb_Kit_Honda_CB1_NC27.html

I'm sure since the bike has been sitting for so long and the fact that the throttle was stiff.  Not really looking forward to completely tearing the carbs down but I guess there's no choice.


Mike
14  General Category / Tech Corner / Re: Fuel System questions on: October 11, 2016, 02:14:27 PM
First generation CBR600 Hurricane carbs are very similar, but not completely interchangeable.

That's good to know.  I read on here somewhere that they used the same carbs but apparently not. 


Mike
15  General Category / Tech Corner / Re: Fuel System questions on: October 11, 2016, 12:16:57 PM
Thanks.  That's what I suspected since the Fuel Shutoff Relay appears to be controlled by the ignition module.  I'll hook up an aux supply but I'm pretty sure the carbs are gunked up.  At first the twist grip wouldn't even move, it's a little better now.  Hopefully carb kits are available.  I understand that the carbs are the same as on a CBR600. 


Mike
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