Chipperf
CB750 Member
Hey everyone,
I want to preface this post with open acknowledgement that I am very much a motorcycle beginner who is doing my best to learn. The 1979 CB750 (10th Anniversary) I purchased about a year and a half ago hasn't started in over 20 years. Since I purchased it, I've used the Honda Service Manual and completed the following:
Since the spark plugs do have spark, I assume it is not an electrical issue, but more of a air or fuel issue. Most likely, a carburetor issue. If that is the issue, I can take them (or it) to a local shop who specializes in this type of motorcycle repair work, and have them sync the carburetors?
I also wanted to ask, in the attached photo, there is something on the handlebar that I'm wondering has impacted the revving that typically accompanies the bike starting. What is this, and should I remove it?
Anywho, I'm seeking suggestions on what I can/should attempt to check next? Any advice is always appreciated..
Cheers, Chip
I want to preface this post with open acknowledgement that I am very much a motorcycle beginner who is doing my best to learn. The 1979 CB750 (10th Anniversary) I purchased about a year and a half ago hasn't started in over 20 years. Since I purchased it, I've used the Honda Service Manual and completed the following:
- Changed the oil and replaced the oil filter.
- Changed the spark plugs and verified all four have spark (they do).
- Check and adjusted the valve clearances for all cylinders.
- Cleaned, disassembled and rebuilt the carburetors (twice) using a Randacks kit.
- Cleaned the gas tank.
- Replaced all 8 carburetor boots with new OEM boots.
- Replaced the air filter.
- Checked timing, which was in spec.
- Check compression, which was: 1 (159); 2 (149); 3 (165); and 4 (147).
Since the spark plugs do have spark, I assume it is not an electrical issue, but more of a air or fuel issue. Most likely, a carburetor issue. If that is the issue, I can take them (or it) to a local shop who specializes in this type of motorcycle repair work, and have them sync the carburetors?
I also wanted to ask, in the attached photo, there is something on the handlebar that I'm wondering has impacted the revving that typically accompanies the bike starting. What is this, and should I remove it?
Anywho, I'm seeking suggestions on what I can/should attempt to check next? Any advice is always appreciated..
Cheers, Chip