Bike wont start after rebuild, need help please

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04 Oct 2012 22:51 #552495 by strobel5
So I finally got everything back together on my project, I went to start it and there is nothing. It is turning over, has spark, and is getting fuel to the carbs. I know the compression is good too. When I go to kick start it there doesnt seem to be much backpressure and it is dead quite, like just turning over thats it. I know its hard to give advice on an issue like this but please any tips or ideas are welcomed. Is there a way to see if the carbs are working properly?

1978 kz650d(SR)

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04 Oct 2012 22:54 #552497 by Motor Head
Replied by Motor Head on topic Bike wont start after rebuild, need help please
Check your compression with a gauge. Sounds like you say it is not feeling right kicking it.

1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...

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04 Oct 2012 23:15 #552501 by strobel5
Thank you for your response. I did a compression check recently and I got 1:155 2:150 3:125 4:175, these numbers are after a top end rebuild. I know the compression is off but shouldnt I at least get some kind of running with that compression? As far as the kick starting I am only assuming since I actually never kick started it prior to rebuilding it.

1978 kz650d(SR)

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04 Oct 2012 23:19 #552503 by Motor Head
Replied by Motor Head on topic Bike wont start after rebuild, need help please
Yes those are plenty high enough. the lower one could be an issue though.
So when you kick it, it doesn't feel right?
Do the plugs get wet with fuel?
Any fuel actually in the bowls, open a drain screw and see fuel flow out?

1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...

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04 Oct 2012 23:22 #552504 by strobel5
When I kick it, it almost seems too easy, but its smooth and everything. Havent check plugs but I did check the bowls and they have fuel. Timing maybe?

1978 kz650d(SR)

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04 Oct 2012 23:25 #552505 by Motor Head
Replied by Motor Head on topic Bike wont start after rebuild, need help please
Any Pop or Back fire? Sign of life? Got the plug wires on right, and the correct pick-up/ points for each coil? They usually Pop and back fire if it is wrong.

1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...

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04 Oct 2012 23:33 #552509 by strobel5
No sound of life at all, thats what sucks. I checked the leads and everything/

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04 Oct 2012 23:45 #552512 by Motor Head
Replied by Motor Head on topic Bike wont start after rebuild, need help please
So check the plugs and see if they are wet. If not try a small amount of fuel down the plug holes and try again. I like this better than starting fluid/ ether.

1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...

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04 Oct 2012 23:51 #552518 by strobel5
Ok thanks for the help, I will try tomorrow and see

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04 Oct 2012 23:56 #552520 by Motor Head
Replied by Motor Head on topic Bike wont start after rebuild, need help please
So it ran before the rebuild, but how long ago was that? And has it been sitting with gas/ Deathanol in the tank and carbs? You small fuel drillings/ jets might be plugged with corn syrup. The starter/ enrichment jet might be plugged. Did you do any carb work?

1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...

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05 Oct 2012 00:09 #552529 by 4TheKZ1000
Replied by 4TheKZ1000 on topic Bike wont start after rebuild, need help please
Make sure your doing this outside if possible or inside with a fire extinguisher at hand.

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05 Oct 2012 00:12 #552533 by strobel5
ha ok good point.

1978 kz650d(SR)

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