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Help! Bike shuts down while riding
- rsrcafe
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Anyway, replaced the coils with new emgo replicas, bike ran strong..for ten miles and shut down again. Fould plugs. New plugs(b7es) and points and condensor just installed today, and fired up and ran til idle correct without choke. Pulled plugs and all are clean except# 2(small amount of oil).
Is this the culpret? Would bad rings or seals oil fouling out in one jug cause all of them to carbon foul out. Do I just need hotter plugs or will this cause more problems in the other jugs? Any ideas or further steps? I'm just tired of pushing the bike back to my housemore than riding.
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- TeK9iNe
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If its black and powdery/gas wet, your too rich or ignition system is weak. Check to make sure the coils are getting 12 volts.
Is the jetting stock? Do you know what the jets are? What are the fuel levels while checked on the bike?
Cheers.
Oil fouling in one cylinder will not cause the others to foul.
Use the recommended spark plug only. A b7 is hotter. If you use alot of high revs/wot you could have overheating issues/ping.
Motorcycle Shop Owner/Operator
79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors
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- mjkawa
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It will run w/ three. It will run rough, and no good power, but it should certainly get you home.
I dont think that the single fouled plug is the culprit.
When you "shut down" Means what? wont fire? electric is gone?
I would look at something heat related.
When you get it home, what do you do to get it restarted?
82 KZ-1000-J
77 KZ650 B
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- MFolks
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1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)
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- Johnj
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Veho vivo - Ago ut veho
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- bountyhunter
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I would check the gas cap vent for sure.bike ran strong..for ten miles and shut down again. .
1979 KZ-750 Twin
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- Patton
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Good Luck!
1973 Z1
KZ900 LTD
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- chance
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- rsrcafe
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Do have all electrics and plenty of juice, just can't get it to run other than putting choke on full and even then it shuts right off after about 2 seconds.
Once I get home I pull plugs, all four are fouled and then I clean them again, and then its like groundhog day for the next short ride.
You bring up a good point about heat related though. When the bike would get me back and forth to work(40mile round trip) without any problems, it was 70 or below outside. I thought maybe cooler air it ran better with jetting as is. I pretty much ruled this out though because I did not bump up the jets, and the plugs are not white gray for a lean condition but black when the problem occurs. It is strange that the bike has shut down during days that are around 80 degrees.
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- rsrcafe
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- Nephlyte
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After you clean the plugs it starts up? That doesn't seem right. They can't be that fouled, i've ridden my bike on the worst fouled plugs in the world. I can tell the diff when i change them out, but it should still run crappily.
Have you left it to cool completely down then tried to start it?
Also, next time it does that, pull a spark plug and turn the engine, see if you are getting a spark, if you are, then the plug fouling probably is a side issue.
1979 KZ1000 MKII, 1075 wiseco kit installed, 10.25:1 compression, welded crank, kerker header and custom paint.
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- KOOL RYDER
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I pulled the tank yesterday and connected the vent host to the vaccume line, it started and ran very poorly and would die if the choke was closed or the throttle was opened.
After reversing the lines the bike ran beautifully.
KR
Rockin\' a KZ650B2 since 2007 and a KZ 1000E since 2008
1978 KZ650B
1979 KZ1000ST
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