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02 Mar 2013 19:10 - 02 Mar 2013 19:16 #574929 by badrhino
More bad news. was created by badrhino
I have already checked my valve clearances and did adjustments once. I have been having problems with bike not running correctly. I know I am not getting a fat blue spark but am still working on that problem. Anyhow I finally got around to doing a compression test on the cylinders and I think I found a major problem.

Compressions:
1: 120
2: 110
3: 40
4: 120

Yeah number three is bad. What do you suggest I do now? Should I recheck the valves to make sure they are still good? I don't know how it would have gotten off. Could the timing be off? But wouldn't that affect all cylinders if that was the case?
1980 KZ1000 with a 1982 KZ1000J motor with 1100 pistons and heads, Vance & Hines, 29MM Smooth Bores, Work in Progress
Franken Z!
Last edit: 02 Mar 2013 19:16 by badrhino.

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  • wireman
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02 Mar 2013 19:49 #574937 by wireman
Replied by wireman on topic More bad news.
Yeah Id check them again,nothing to lose.You could also dump a little oil down the plug holes and check numbers to see if the come up,if they come up Id lean towards rings not sealing. B)
posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.

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  • donthaveakawman
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02 Mar 2013 19:52 #574940 by donthaveakawman
Replied by donthaveakawman on topic More bad news.
did you make sure the throttle is open? I had 60 psi in my #2 that is why I am curious. might take the pipes and carbs off and spray some carb cleaner in the closed valves to see if they seal well.

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02 Mar 2013 20:32 #574945 by donthaveakawman
Replied by donthaveakawman on topic More bad news.
re-edit, took the valve shims out of the intake, set the timing and now I have 100 psi in the #2 cylinder. thanks to some outside help- you all couldn't think of that?

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02 Mar 2013 21:43 #574968 by badrhino
Replied by badrhino on topic More bad news.
No I did not have the throttle open on any of the readings as the carbs are not on at the moment.
1980 KZ1000 with a 1982 KZ1000J motor with 1100 pistons and heads, Vance & Hines, 29MM Smooth Bores, Work in Progress
Franken Z!

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02 Mar 2013 22:13 #574974 by Powerstroke_fan
Replied by Powerstroke_fan on topic More bad news.
I would check the valve clearance. Then if all is good i would perform a leak down test.
1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD

2014- ZX14R all stock for now

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  • lushbaugh
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02 Mar 2013 22:53 #574982 by lushbaugh
Replied by lushbaugh on topic More bad news.

Powerstroke_fan wrote: I would check the valve clearance. Then if all is good i would perform a leak down test.


yep
79 kz1000 ltd all apart
the best advice i can give is dont take dnthavakawmans advice..

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02 Mar 2013 23:01 #574984 by steell
Replied by steell on topic More bad news.

lushbaugh wrote:

Powerstroke_fan wrote: I would check the valve clearance. Then if all is good i would perform a leak down test.


yep


Yep :)
KD9JUR

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  • donthaveakawman
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05 Mar 2013 01:41 #575376 by donthaveakawman
Replied by donthaveakawman on topic More bad news.

badrhino wrote: No I did not have the throttle open on any of the readings as the carbs are not on at the moment.

spray some carb cleaner in the intake valves and see if it leaks past them. :cheer:

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  • wireman
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05 Mar 2013 01:53 #575379 by wireman
Replied by wireman on topic More bad news.

donthaveakawman wrote:

badrhino wrote: No I did not have the throttle open on any of the readings as the carbs are not on at the moment.

spray some carb cleaner in the intake valves and see if it leaks past them. :cheer:

Attachment stewie_2013-03-04.jpg not found


:laugh:
posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.
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  • lushbaugh
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05 Mar 2013 02:05 #575386 by lushbaugh
Replied by lushbaugh on topic More bad news.

wireman wrote:

donthaveakawman wrote:

badrhino wrote: No I did not have the throttle open on any of the readings as the carbs are not on at the moment.

spray some carb cleaner in the intake valves and see if it leaks past them. :cheer:

Attachment stewie_2013-03-04.jpg not found


:laugh:

[IMG
79 kz1000 ltd all apart
the best advice i can give is dont take dnthavakawmans advice..

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  • donthaveakawman
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05 Mar 2013 02:17 - 05 Mar 2013 02:18 #575392 by donthaveakawman
Replied by donthaveakawman on topic More bad news.
wireman and lushbaugh are all about "more bad news"
Last edit: 05 Mar 2013 02:18 by donthaveakawman.

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