grey
overspeed error



On  manual start it tried to blow itself up...revving 6000 I would guess and backfiring out carb.
I do not know what happened. I adjusted valves. tested it manual, and cutting power supply at breaker. And it worked fine.
I do not know what happed on weekly checks.... the info logs are there I guess, but I dont understand

I need some diagnostic manual for this error code.
Also I think the throttle/stepper will need replaced or adjusted. i saw the backfire from carb knock the valve completely off.

Any ideas/ Thanks.

model  005861
           7268961
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Peddler
More information would be helpful about the time between your valve adjustment and the runaway engine.  It sounds like you may have a coil problem as this can be the cause of the most violent backfires and is also the source for the speed signal that tells the stepper to open or close.  If the coils fire out of time or fail to send the proper signal to the controller then you can get high RPM.  There are other things that can also cause excessive speed but they are not usually associated with backfiring.
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78buckshot
I worked on one a couple years ago that was faulting on "overspeed", I think it was an Evolution series. After our first tech diagnosed it tech support told us to change the throttle body/stepper, my feeling was that it was a controller problem but we changed the throttle body/stepper with no improvement. Tech support then said it's the mags, so in go the new ignition mags - no improvement. The controller was the issue, new one took care of the problem with no call-backs.
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grey
Well, I appreciate your response. ( I realize the post dates). 

Peddlar, it was weeks between valve job and overspeed fault. The controller should have record and be helpful here. I need either to buy "the book" (or be guided on internet) to access the controller information. I know there is a good diagnostic manual. I need help finding it. 
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grey
A digital or hard copy of the diagnostic manuals....because I  cant even remember all this stuff.

I do not look forward to this, but....
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grey
grey wrote:
overspeed error



On  manual start it tried to blow itself up...revving 6000 I would guess and backfiring out carb.
I do not know what happened. I had adjusted valves after "overcrank" faults. THEN, I tested it manual, and cutting power supply at breaker. And it worked fine.
I do not know what happed on weekly checks.... the info logs are there I guess, but I dont understand

I need some diagnostic manual for this error code.
Also I think the throttle/stepper will need replaced or adjusted. i saw the backfire from carb knock the valve completely off.

Any ideas/ Thanks.

model  005861
           7268961


There edit
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grey
I had the manual on a tablet..it was really helpful with reading/understanding the controller, with diagrams and pinouts, operation sequence, ..
...but that tablet died
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78buckshot
Ziller can send you a hard copy of the diagnostic manual.
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