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Old 10-28-2011, 04:13 AM   #9
MT-2500
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Re: Ignition timing jump when checking timing with light.

Quote:
Originally Posted by Wags391 View Post
In base time, the mark is timed at TDC. When in normal mode, the mark is advanced. What do you mean check the opposite cylinder? Cylinder 4?? If it does, what does that mean??
Yes cylnder 4 is opposite firing cylnder.

And can be timed on no 4 the same as no 1 cyl.
Checking it on no 4 and if it does not jump would point to a firing problem on no 1.

Another thing that comes in mind could be a worn dist shaft bushing or gear.
Was the dist checked when motor installed.
Also dist cap and rotor.

Good Luck and let us know how it goes.
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