- Posts: 43
- Thank you received: 3
KZ1100 project finalized, now tuning
- eric951turbo
- Topic Author
- Offline
- User
The bike is running lean... hesitation on acceleration with some popping.... some popping in the exhaust on de-acceleration.
The bike runs better when the petcock is at the reserve position... if its at 'on' position, it runs very lean (no acceleration, stalls).
Carbs are clean, installed 2 size larger for main jets, and one size larger for pilot jet.
The air screws are rotated 2.5 turns out.
My questions:
1. the fact that the bike runs better on 'reserve' position, could be the symptom of a bad fuel petcock?
2. I bought a part bike that came with a new aftermarket petcock, but it has no return line nipple... if i replace it with that one, can i just leave the return line open routed under the bike?
first thing I was gonna try tonight after reading stuff on the web, was to enriched by turning the air screws, thats all i got for now.
here are some pictures of my bike
Attachment 11825073_10207381621928483_648742395009692259_n.jpg not found
Attachment 11811468_10207381622488497_4167641071387904267_n.jpg not found
Attachment 11828540_10207381622328493_8593038901482219972_n.jpg not found
Please Log in or Create an account to join the conversation.
- baldy110
- Offline
- User
- Posts: 2272
- Thank you received: 512
Please Log in or Create an account to join the conversation.
- eric951turbo
- Topic Author
- Offline
- User
- Posts: 43
- Thank you received: 3
Please Log in or Create an account to join the conversation.
- jackleberry
- Offline
- User
- Posts: 394
- Thank you received: 56
If not, then you probably need to rebuild the petcock. Kits are ~$30.
1997 KZ1000P (P16)
2001 KZ1000P (P20)
Please Log in or Create an account to join the conversation.
- eric951turbo
- Topic Author
- Offline
- User
- Posts: 43
- Thank you received: 3
Is it normal that more fuel pass by when the petcock switch is on the 'reserve' side or not???
For me, it should be the same amount of fuel that passes by on 'reserve' and 'fuel' ???
Please Log in or Create an account to join the conversation.
- jackleberry
- Offline
- User
- Posts: 394
- Thank you received: 56
eric951turbo wrote: Thanks for your help guys....
Is it normal that more fuel pass by when the petcock switch is on the 'reserve' side or not???
For me, it should be the same amount of fuel that passes by on 'reserve' and 'fuel' ???
Should be the same amount. The tube inside the tank on the petcock could be pluged with rust or whatever. There's supposed to be a screen in there to keep stuff out, but it may be mising, torn, melted etc. I wouldn't take it apart without the rebuild kit on-hand.
1997 KZ1000P (P16)
2001 KZ1000P (P20)
Please Log in or Create an account to join the conversation.
- eric951turbo
- Topic Author
- Offline
- User
- Posts: 43
- Thank you received: 3
I tried the bike again yesterday and played with the switch, reserve to fuel positions, and made no difference... so the petcock is not involved anymore in the problem.
The problems:
1. exhausts/mufflers pops a little from 0 to 3000rpm, with some hesitations for acceleration. when it its around 3.5k... the power is incredible like if it was turbocharge
2. on decelaration, my left muffler will pop a lot, until i press on the clutch
my guess is that I need to play with the air screws and try to adjust. I took the plugs out: #1 was a little white, #2 was totally suited black, 3and4 a little black... so I'm guessing I'm running rich.
My plan for tonight is :
1. check the carbs couplers, seal them with sealant
2. readjust airscrews to 2 turns
3. new plugs
Please Log in or Create an account to join the conversation.
- spdygon
- Offline
- Platinum Member
- Posts: 1026
- Thank you received: 117
Atleast that is what be needed in VM carbs.
I know yours are CV.
U mention your plugs are different color...that would till me that carbs are not working properly.
1982 GS1000sz Katana ( #15...17K Miles)
1982 GS1000sz Katana ( # 297....7100k Miles)
1978 Kz1000 Z1R. 10K Miles1
1978 kz1000 z1r 27k miles
1977 KZ 1000 A ( Project ) 54K Miles
1976 Kz900A4 (Red)21K miles
1976 Kz900A4 ( Red)7500 miles
1974 Z1 900 project
Please Log in or Create an account to join the conversation.
- eric951turbo
- Topic Author
- Offline
- User
- Posts: 43
- Thank you received: 3
I realized that the popping came for cylinder #4. If I unplug the plug on #4, the popping stops.
So far, I've:
1. Cleaned points
2. Swap wires and coil with another coil
3. New spark plugs (getting spark on all of them)
4. Compression good on all cylinders
After all this, no change
Any advice on where could be the problem, out of ideas here
Please Log in or Create an account to join the conversation.
- Irish-Kawi
- Offline
- User
- Posts: 498
- Thank you received: 37
Hey Eric gorgeous bike! I know I'm brand new but read several threads past few days of guys running NGK plugs where it appeared like it was firing but was deceptively wrong. Any chance this may be plaguing you? I'm far from being an expert but your issue "sparked" that potential connection in my head and made me curious. Best of luck on resolving iteric951turbo wrote: New update.
I realized that the popping came for cylinder #4. If I unplug the plug on #4, the popping stops.
So far, I've:
1. Cleaned points
2. Swap wires and coil with another coil
3. New spark plugs (getting spark on all of them)
4. Compression good on all cylinders
After all this, no change
Any advice on where could be the problem, out of ideas here
- Irish
All the gear all the time!
1985 Kawasaki GPz 750 (ZX750-A3) 15,000 original miles www.kzrider.com/forum/11-projects/601230...z750-refresh-project
Father - Husband - Bourbonr - Rider
Please Log in or Create an account to join the conversation.
- baldy110
- Offline
- User
- Posts: 2272
- Thank you received: 512
Please Log in or Create an account to join the conversation.
- eric951turbo
- Topic Author
- Offline
- User
- Posts: 43
- Thank you received: 3
Running NGK spark plugs and caps... But I've tried and swapped different sets, no difference, all good
+2 sizes bigger on main jet, +1 on pilot
I think I may have found the problem. My new air pilot screw... I think I may have bought the wrong ones from z1. The needles at the end of all 4 are a little bended .
I've replaced with the ones on the part bike I bought.
Unable to test now cause I need to fix the fuel tank
Thinking it might be the petcock, (before finding out about the air screws), I removed it and tried replacing with the brand new aftermarket petcock on the part bike.
It was a little dark in my garage and didn't notice that the aftermarket tube was larger.
I bolted it in tight, then I lift the tank and fuel was pouring.
Removed it and notice I blended the surrounding of the peacock hole on the tank.
Crap
Now I'm fixing it with epoxy jbweld
Crossing my fingers on all that crap
Brand new painted reservoir
Attachment image-7.jpg not found
Attachment image-8.jpg not found
Please Log in or Create an account to join the conversation.