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changed belts - wont run

Started by kingmoochr, October 02, 2010, 06:12:42 PM

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kingmoochr

#15
October 03, 2010, 10:23:12 AM
was running just fine before. new plugs and no change. redid the compression (throttle open  [bang]) and got 140 vert 130 horiz. im about to just throw the old belts back on in a hopeless act of desperation...

Raux

#16
October 03, 2010, 11:27:59 AM
Quote from: kingmoochr on October 03, 2010, 10:23:12 AM
was running just fine before. new plugs and no change. redid the compression (throttle open  [bang]) and got 140 vert 130 horiz. im about to just throw the old belts back on in a hopeless act of desperation...

how would that fix the problem?


kingmoochr

#17
October 03, 2010, 11:50:37 AM
well so far i havent  found a problem, other than not wanting to run  [bang]

Howie

#18
October 03, 2010, 11:59:00 AM
Belts are not a problem with your new readings.  Recheck everything.  You might be overlooking something simple, like a vacuum hose that was disturbed or a wire that was knocked off.  Is your bike carburated  or injected?

kingmoochr

#19
October 03, 2010, 12:30:01 PM
fcr'd. it really sounds like the timing is off, but there is nothing to indicate that it is...

ducpainter

#20
October 03, 2010, 01:06:46 PM
How long did it sit between the last ride and the belt change?
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


kingmoochr

#21
October 03, 2010, 02:36:16 PM
The gas is a week old.

ducpainter

#22
October 03, 2010, 02:54:24 PM
That isn't the problem.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


The Mad King Pepe'

#23
October 03, 2010, 03:18:09 PM
The marks line up correctly so it doesn't seem like you screwed up anything there.

Now the question is: what did you move/touch/disturb when changing the belts?

Are all the wires connected (check if they're loose). If you have a fuel petcock is it open? Did you lift the tank to do the work, could some "crud" have made its way into the filter and be clogging up the fuel system?

When this happens to me it helps to just walk away for a while do something else and then come back. That's when I have an "ah ha!" moment and realize what a retard I am ??? :-\ ;)
First they came for the Socialists, and I did not speak out-- Because I was not a Socialist.
Then they came for the Trade Unionists, and I did not speak out-- Because I was not a Trade Unionist.
Then they came for the Jews, and I did not speak out-- Because I was not a Jew.
Then they came for me--and there was no one left to speak for me.

WetDuc

#24
October 04, 2010, 05:12:09 AM
Check to see if you are getting full voltage at the plugs.  If you have no spark, then it's electrical.  If you do have spark, then it's got to be fueling.
2007 S2R1000, 2009 M696 & 2008 M695 (foster bikes)

floyd turbo

#25
October 05, 2010, 08:36:50 AM
Quote from: humorless dp on October 03, 2010, 04:31:10 AM
If the layshaft mark lines up it can't be off.

i was thinking that there might be a remote chance that when the belts were off and if both cams were turned to were the valves are all closed and somehow the crank got turned off of the mark and then back to the mark in the wrong direction.  would that not screw up the ignition timing?

ducpainter

#26
October 05, 2010, 08:49:31 AM
Quote from: floyd turbo on October 05, 2010, 08:36:50 AM
i was thinking that there might be a remote chance that when the belts were off and if both cams were turned to were the valves are all closed and somehow the crank got turned off of the mark and then back to the mark in the wrong direction.  would that not screw up the ignition timing?
If the layshaft mark and the two cam marks line up all is good. The direction you turn the crank is immaterial although direction of rotation is always best to account for gear lash.

If any one of those marks does not line up when you install the belts all bets are off.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


floyd turbo

#27
October 05, 2010, 09:29:06 AM
maybe i just dont understand the way the ignition system works.  actually i know i dont.  but it was my thought that if the crank was out by 360 degrees the plugs would be firing on the exhaust stroke rather than the compression stroke

ducpainter

#28
October 05, 2010, 09:45:53 AM
Quote from: floyd turbo on October 05, 2010, 09:29:06 AM
maybe i just dont understand the way the ignition system works.  actually i know i dont.  but it was my thought that if the crank was out by 360 degrees the plugs would be firing on the exhaust stroke rather than the compression stroke
That's true.  On the Ducati engine the ignition either has a waste spark meaning it fires in both places, or it is keyed to the layshaft position. There are also two tdc marks. One for vertical and one for horizontal.

The layshaft mark can only line up in the correct position which is why it's there and why I suggest using it for the belts.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


floyd turbo

#29
October 05, 2010, 09:47:12 AM
thank you. everything makes sense now.
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