Problem with the cylinder 4 intake valve

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22 Mar 2012 11:06 #511224 by jeffecor
Problem with the cylinder 4 intake valve was created by jeffecor
last night i was work on the motorcycle and it was blowing back in thou cylinder 4 intake valve so i check the gap between the valve and cam it was .003 the book says should between .003-.007 then i pulled the cylinder head off and put fluid down there its no fluid getting by the valve. I double check my timing very thing was ok there.. I'm confused as hell..
1980 Kawasaki 750 h1 ltd

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22 Mar 2012 11:58 #511236 by Patton
Replied by Patton on topic Problem with the cylinder 4 intake valve
If not already done, would double-check connections of signal wires to the ignition coils to assure they aren't reversed.

Good Fortune! :)
1973 Z1
KZ900 LTD

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22 Mar 2012 12:07 - 22 Mar 2012 12:07 #511237 by jeffecor
Replied by jeffecor on topic Problem with the cylinder 4 intake valve
I check that the red 12 volt was going to the + on the coil both sides. i'm going to put the old cylinder head back on the motorcycle tonight i swapped it last year.. maybe take the valves out of the that head and rebuild it..
1980 Kawasaki 750 h1 ltd
Last edit: 22 Mar 2012 12:07 by jeffecor.

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22 Mar 2012 12:10 - 22 Mar 2012 12:14 #511238 by Patton
Replied by Patton on topic Problem with the cylinder 4 intake valve
It's the "signal" wires that sometimes get erroneously reversed (not the red or red/yellow battery power wires).

1973 Z1
KZ900 LTD
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Last edit: 22 Mar 2012 12:14 by Patton.

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22 Mar 2012 12:13 #511239 by DoubleDub
Replied by DoubleDub on topic Problem with the cylinder 4 intake valve
Odd that it's only the one cylinder - would also verify cam timing (tooth count) if you reassembled the head recently. That's what I've seen happen when one tooth off.

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22 Mar 2012 12:15 #511240 by jeffecor
Replied by jeffecor on topic Problem with the cylinder 4 intake valve
Thanks patton i get how they hook up but thanks anyways. That not the problem with the motorcycle its blowing back thou the intake valve on cylinder 4. I'm thinking that head has a bent valve
1980 Kawasaki 750 h1 ltd

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22 Mar 2012 12:19 - 22 Mar 2012 12:26 #511242 by jeffecor
Replied by jeffecor on topic Problem with the cylinder 4 intake valve
I count it starting off the ex cam line was 0 and the intake line was in between 45-46. i have pulled this bike a part like 5 time never had this problem.
1980 Kawasaki 750 h1 ltd
Last edit: 22 Mar 2012 12:26 by jeffecor. Reason: spelling

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22 Mar 2012 22:12 - 22 Mar 2012 22:13 #511342 by Patton
Replied by Patton on topic Problem with the cylinder 4 intake valve

jeffecor wrote: ...pulled the cylinder head off and put fluid down there its no fluid getting by the valve....

jeffecor wrote: ... thinking that head has a bent valve


:huh: No fluid getting by a bent valve? :S

Good Fortune! :)
1973 Z1
KZ900 LTD
Last edit: 22 Mar 2012 22:13 by Patton.

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09 Apr 2012 15:04 #514856 by jeffecor
Replied by jeffecor on topic Problem with the cylinder 4 intake valve
I took the head in the shop they are go thou the valves..
1980 Kawasaki 750 h1 ltd

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10 Apr 2012 11:33 #515001 by jeffecor
Replied by jeffecor on topic Problem with the cylinder 4 intake valve
They called me cylinder 2 had a bent intake valve and intake 1,4 need turned.. cylinder 3 intake valve needs a valve sit maybe.. its going to be 40 dollars to cleaning all the valves and measuring them. If it need the valve sit its going to 60 dollars.. so that's the problem with the cylinder head.. :-)
1980 Kawasaki 750 h1 ltd

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