Author Topic: Just wont run, white smoke from exhaust?  (Read 3490 times)

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Offline dailydose1

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Re: Just wont run, white smoke from exhaust?
« Reply #45 on: December 05, 2018, 01:28:22 AM »
Im going to have to redo valve adjustment....I dont think I did it at TDC

Offline nk140

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Re: Just wont run, white smoke from exhaust?
« Reply #46 on: December 05, 2018, 01:06:39 PM »
You are correct on setting the valves.  The manual doesn't say TDC it just says at the smallest point on the cam lobe.  I have a low vacuum problem at idle, but no vacuum leaks. I have sprayed everywhere and can't find anything.  I am going to be looking at a few things this winter.

Offline dailydose1

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Re: Just wont run, white smoke from exhaust?
« Reply #47 on: December 05, 2018, 03:00:01 PM »
What could be causing my low compression then? any thoughts because I have new pistons, rings, and valves adjusted, valves recut, etc. I cant fathom what is going on

Offline nk140

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Re: Just wont run, white smoke from exhaust?
« Reply #48 on: December 05, 2018, 03:58:35 PM »
Have you checked another compression gauge?

Offline dailydose1

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Re: Just wont run, white smoke from exhaust?
« Reply #49 on: December 05, 2018, 04:01:55 PM »
I should, will try that this weekend

Offline dailydose1

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Re: Just wont run, white smoke from exhaust?
« Reply #50 on: December 05, 2018, 05:32:16 PM »
 having the cyl you are adjusting the valves on at TDC on compression will always give a true
 clearance check . remember , the cam base circle ( smallest /lowest area ) should always be facing the rocker arm
 when setting the valves it controls . are you rotating the crank 180 to bring the right cyl to TDC before setting that
 side ?

Per dave it seems they should be tdc

Offline nk140

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Re: Just wont run, white smoke from exhaust?
« Reply #51 on: December 05, 2018, 07:29:38 PM »
I did it the way the manual stated.  I assume TDC would be the most accurate way of doing it.  The radius of the back of the cam lobe is pretty constant so that is why the manual made it simple for everyone.

Offline dailydose1

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Re: Just wont run, white smoke from exhaust?
« Reply #52 on: December 08, 2018, 12:26:02 AM »
I just got the engine out and will be re-doing all my work and ensuring everything is right this time. I even bought a NOS cylinder for the xs500e (engine I have) and will be installing that so I know it will be within spec just in case my mechanic measured wrong

Offline Garn

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Re: Just wont run, white smoke from exhaust?
« Reply #53 on: December 08, 2018, 05:54:08 AM »
Sorry I can't help you like you did for me!
I notice that on your compression check..... did you have the throttle fully open during test?
Easy to get muddled with points turning at 1/2 crank speed.
Remember 180 degrees of points rotor, after one piston is at TDC, the other will take 360degrees of points rotors

RegardZ
Kawasaki Z1, Z1A, Z1B, Z900-A4 and TX500A
    Sydney, Australia

Offline dailydose1

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Re: Just wont run, white smoke from exhaust?
« Reply #54 on: December 10, 2018, 01:57:18 PM »
No worries! Thank you for the input, im going through all my work again and going to make sure everything is perfect and go from there. Probably just something stupid I forgot! New cylinders should be in this week and ill be bale to finish it this weekend

Offline dailydose1

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Re: Just wont run, white smoke from exhaust?
« Reply #55 on: December 15, 2018, 01:00:35 PM »
So I got a NOS cylinder and it has some light rust in the cylinder. (assuming its from age and sitting). What should I do? Scoth brite or light hone to get it out or do I just leave it? Any thoughts?

Offline Garn

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Re: Just wont run, white smoke from exhaust?
« Reply #56 on: December 18, 2018, 07:54:02 AM »
If it's new rings going in, I would lightly hone the cylinder bores.
Look to see if the original 45 degree hone marks are there They usually make a herring bone-pattern..
You need to have the hone to "cut" the rings in, otherwise they may glaze.
You can buy a, what looks like an appropriate sized bottle brush, with small abrasive 12mm balls on the end of wire  stems that can be used as a cheap hone.
Have a mechanic look at it!  Shouldn't be any drama!
RegardZ.
PS, I think already covered... Ensure rings are mounted correctly on pistons ( ie numbers/ lettering up).
This could cause smoking.
« Last Edit: December 18, 2018, 08:02:17 AM by Garn »
Kawasaki Z1, Z1A, Z1B, Z900-A4 and TX500A
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Offline guylr

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Re: Just wont run, white smoke from exhaust?
« Reply #57 on: December 18, 2018, 03:12:42 PM »
Garn is correct, honing should result in a 22 degree from horizontal or 45 degree combined cross hatch pattern which is best done with a precision hone. That takes some practice to get right and too much angle can lead to oil consumption. However, if the original hone pattern is still present then a ball hone (aka Dingleberry hone) can be used as "glaze breaker" if the rings did not seat due to the cylinder wall being over lubricated. Those are pretty easy to use and work well as long as you use the correct size hone for the bore and don't over do it.

Guy
Now Retired Yamaha guy. Cut me and I bleed "Cinquasia Red"