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https://dallas.craigslist.org/ndf/mcy/d/frisco-1972-honda-cb750/7325933074.html Hello, I am selling my 1972 Honda CB750Four. My grandfather purchased this bike brand new in 1971. It sat for a while until I fixed it up a bit and got it running. I put new tires, new chain, cleaned the carbs and...

Hello, I am selling my 1972 Honda CB750Four. My grandfather purchased this bike brand new in 1971. It sat for a while until I fixed it up a bit and got it running. I put new tires, new chain, cleaned the carbs and a few other things to get it back up and running a few years ago. After having a...

I have a 72 CB750 in Orange, CA. Currently is not running. Want to get it checked out and am looking for someone in Orange/Corona area. Thanks.

haha your cat picture is perfect for you. But ya, maybe not amazing but it ran good for a 40 year old bike, and im just comparing it to other bikes I have been on both old and new. Never felt like i was getting the full potential though thats for sure. But Im just gonna have to take it in. I...

ya just did a compression test again and I'm getting 85-90 on all 4. Maybe I'll try to get some of that Restore stuff. I really dont get how if my compression has been that low how my bike sometimes runs amazing for weeks when "I'm really lucky that it even starts." I'm pretty sure I'm doing...

Ya I did a compression test a while back it they were all really low. One person said that the bike shouldn't even run that low and some others said that old CBs can be really low. So I don't know what to believe.

ya they are pretty black. The other two are a lil black too. im ordering new ones but is that whats causing the problem?

So I just checked my coils and spark plugs after having some issues and everything is fine. Now for some reason when I start he bike it only runs on cylinders 1 and 4. I have to turn the idle up just so it can idle. After trying a few things I turned off the fuel at the petcock. A few seconds...

Ive kinda had this problem lately. But i have new coils on it. Did you ever figure out the problem. Mine starts up and runs ok and then after about a 20 minute ride once its gets really warm, the bike started running very bad. Almost like it was running on only a few cylinders. then after...

Ya I like them on that bike. I saw that on Jay Lenos Garage. I say if you like them and want them then do it! Its your bike and whatever makes it original I'm all for!

Ok, so I hooked up the exhaust back and it's flush on the headers. So I start it up and let it run and is sounding good except now it seems to be getting too much fuel!! It's coming out the overflow. i haven't had that problem since last year when I got the bike and redid the carbs. Geez...

Ya it's hard to tell in the video. But it defining rely only makes the rattling sound after being warmed up a while. Sometimes it even takes bout 30 minutes or more. whats strange is that just today after I tested the compression I put everything back on and tightened the exhaust as best I...

Yep throttle was all the way open. The bike wasn't warm, if that has anything to do with it.

Just did a compression test and all four are pretty low. Like 70-90psi. I'm about to check the valves now. Basically trying to do everything before taking the motor apart, Which is one thing I don't know how to mess with . So I'll probably have to take it into a shop which sucks cause I...

Ok here's a video of what I'm looking at. The one exhaust is a little off the header, I can't put it flush because the pipe is slightly bent. Anyone know a way to bend an exhaust pipe? Also the black stuff on the engine part does that mean that there is a blown gasket or something in the...

Ya the engine sounds good at first but then after a while starts sounding like that. Also it sounds way worse in the video actually.

So Ive noticed this rattling once the engine has been warmed up after about a 20 min ride. Here is a video of it. sounds like the exhaust or bottom of engine. Also makes the exhaust pop a little. Alost the header on my 3rd exuahst seems to be not all the way flush because of the exhaust pipe...

heres a video... https://youtu.be/Wa113qlwVGI <iframe width="560" height="315" src="https://www.youtube.com/embed/Wa113qlwVGI" frameborder="0" allowfullscreen></iframe>

Hey, I think Ive been having the same issue. Mine only happens once the bike has been warmed up, like after a 20 minute ride. Same thing for me when I rev it up it rattles and then when its idle it slows down and goes away. One thing I noticed is that my exhaust header on the right side of...

Just figured it out. The fuse blew. Replaced it so everything is fine!

figured it out. one of the coil wires was loose!

alrighty, so I just changed the ignition switch. I used an ignition switch that is for a later 72 cb750 because apparently they don't make the one for mine any more. I cut the wires and installed everything the way the mechanic told me. Everything worked fine. Rode all day with no problems...

Ya tommy thats it. The only thing is everyone is sold out or wants too much. I just purchased the square one for $24 and cut the wires nd made new connectors. It worked all day but one apparently got loose and i lost all power

Alright so my ignition switch went bad on me. When i turn the key on it gets no power, I have to hold it inbetween on and off. Which obviously doesnt work while riding. So I'm looking for a new one online and everywhere they have the ones with the white square plug. Of course mine has the...

Hey so this actually has happened to me on my old 88 Honda Hawk I used to own as well. On my 72 cb750 When I accelerate hard from a stop and try to shift to 2nd gear it almost always slips into nuetral and i have to slow down and then it will go to 2nd. If i just slowly accelerate from a stop...

Cool thanks hornet. Ya I've been looking at newer tires instead of vintage. I'm just on a budget so trying to find a good deal.

Hey guys so I'm ready for new tires and I'm noticing its a lil more difficult with vintage tires. Mine are 3.23 19 front and 4.6 18 Rear (100 and 120). I can find some tires that are those sizes but a lot of the 120s say they are for front tires. My question is can I use 2 front tires on my...

Hey I ran into this problem to on my 72. I just changed to clubman bars. All my cables (clutch, throttle etc..) are a lil longer now but they all seem to work fine. My throttle doesn't snap back as fast as it used to but it still goes back ok. Smaller throttle cables might do the trick but...

Never mind I figured it out!

Hey guys. Just got done clubman bars for my 72 cb750. Putting them on and I noticed that the wires won't fit unless holes are drilled in the bars like the stock bars. What is the easiest way to do this. Just looking for suggestions. I was thinking bout trying to file down or cut out a lil...