- Posts: 8
- Thank you received: 0
81 kz440 won't start
- Cbguy
- Topic Author
- Offline
- User
I can take it apart but can I put it back together
Please Log in or Create an account to join the conversation.
- tomasblaquier
- Offline
- User
- Posts: 2
- Thank you received: 0
Please Log in or Create an account to join the conversation.
- TexasKZ
- Offline
- Platinum Member
- Posts: 7575
- Thank you received: 2236
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
Please Log in or Create an account to join the conversation.
- Cbguy
- Topic Author
- Offline
- User
- Posts: 8
- Thank you received: 0
I can take it apart but can I put it back together
Please Log in or Create an account to join the conversation.
- Cbguy
- Topic Author
- Offline
- User
- Posts: 8
- Thank you received: 0
I can take it apart but can I put it back together
Please Log in or Create an account to join the conversation.
- jlaudiofan
- Offline
- User
- Posts: 28
- Thank you received: 4
Cbguy wrote: Also when I set the petcock to prime, gas comes out the overflow tubes on both carbs. So fuel is getting to the carbs
Sounds like float levels need to be adjusted and / or float needle valve and seat need checked.
Do you have a timing light to check the timing? Good spark won't do much if it fires at the wrong time.
1980 KZ650F
Please Log in or Create an account to join the conversation.
- loudhvx
- Offline
- KZr Legend
- Posts: 10868
- Thank you received: 1616
If the advancer looks all clean and lubed, then I would check the timing.
When the F mark lines up with the pointer, the point of the rotor should be pointing at the center of the pickup (or very close to it).
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.
Please Log in or Create an account to join the conversation.
- TexasKZ
- Offline
- Platinum Member
- Posts: 7575
- Thank you received: 2236
Cbguy wrote: the battery has plenty of pull.
That is not what I mean. The battery can have enough power to turn the starter, but not enough extra to fire the ignition. If the voltage drops below about 10.5 volts when the starter is used, the battery is too weak to also power the ignition.
vacuum ports are all clean. everything is nice and sealed.
It is good that they are clean. One should have a hose on it connecting to the fuel petcock. The other one should be capped.
I got all new Jets and new o rings. Not really sure how to check the valve adjustments. I just put the carbs back together exactly how they were before.
They are not part of the carbs. The factory service manual explains the procedure. Unless they are so out of adjustment that a valve in each cylinder is not closing, it should at least start, but this will need tending to soon.
As noted above, if fuel is running out of the carbs, the float valves are not sealing. Another possibility is if those carbs have internal overflow tubes in the bottom of the float bowls, they could be cracked, broken or missing. The carbs should not leak no matter what the petcock is doing.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
Please Log in or Create an account to join the conversation.
- Cbguy
- Topic Author
- Offline
- User
- Posts: 8
- Thank you received: 0
I think it is a timing issue but can't find that "f" mark. If anyone could point me where to look I'd appreciate it
I can take it apart but can I put it back together
Please Log in or Create an account to join the conversation.
- Scirocco
- Offline
- Premium Member
- Never change a running system
- Posts: 4209
- Thank you received: 2070
My 1975 Z 1 B 900 Project
www.kzrider.com/forum/11-projects/605133...ears-deep-sleep-mode
Please Log in or Create an account to join the conversation.
- gavroyer
- Offline
- User
- Posts: 101
- Thank you received: 15
Cbguy wrote: I haven't had much of any time to work on the bike as of late.
I think it is a timing issue but can't find that "f" mark. If anyone could point me where to look I'd appreciate it
It's on the timing advance unit behind the small circular cover on the main right-side (clutch) cover. The timing advance is the small disk that spins, in the very back of the timing compartment. If yours is an '81 it *should* have electronic pickup ignition, not points (unless someone changed that...).
With electronic ignition it's very easy to see the timing advancer because the pickup unit is much smaller than the points plate. The rotating part in back is the advance, and the stationary part in front is the pickup. Check around the perimeter of the timing advance for the marks; there should be one double tick mark, one F mark, and one T mark (in order going clockwise around the advance). If you don't see any marks, remove the spark plugs to remove compression from the engine, then using the inner 17mm nut turn the engine *counter*clockwise until you can see them.
With a timing light and the engine at idle (below 1400 RPM), the F mark should perfectly line up with the reference mark on the case (right below the top screw on the pickup).
1980 KZ440-A1 LTD
Please Log in or Create an account to join the conversation.