One cylinder not firing on 407777 0167 E1

bill2019 said:

I have a Craftsman lt1000 tractor with a briggs and stratton 407777 0167 E1 . One cylinder fires fine. I replaced the coil on the non-firing cylinder and it still will not fire. I am getting spark. I tested it with a spark tester and observed the spark plug sparking against the engine. I put it gas and starting fluid, but the bad cylinder still would not kick. I am not sure why it would not fire at least once. I have not yet took off the valve cover because it has been so cold. I did put a compression gauge on the cylinder and it seemed to get at least 90lbs.

Any ideas? Why would it not at least kick with starting fluid? At least once?

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Boudreaux In Eunice La. said:

If the coil you put on there is a good known coil, it very well could be a blown diode..... There should be 2 diodes on yours..... 1 for each coil... The diode should be covered with heat shrink tubing..... It is inline with the kill wire.. The diodes let juice pass 1 way , but not the other....... If any amount of voltage hits a coil it's dead.........
You can check it with a volt meter on the continuity part of the tester.. unplug the kill wire from the coil and where the 2 wires meet the plug connector... You check one way then swap your meter leads and check it .... If you have the BEEP style meter that's better... If it beeps both ways it's bad, if it doesn't beep both ways it's bad.... It should beep only one way....

Let us know Mon Ami ............

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bill2019 said:

Boudeaux,

Thank you for the response.

The coil i put on was a new one, so i don't think it is the coil. I tested the coil and the spark plug sparks against the engine and an inline spark tester shows a spark.

Bill

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