I didn't have any luck searching for this problem, but then again, I find the search feature here difficult to use at times. So here goes.....
I had a miss on '04 225 at idle. We popped off each plug wire and found the culprit was the lower port side (#3?). Then we went to remove the coil to inspect the plug and test for spark. Usually these come out easily. This one wouldn't, so we applied gentle pressure, and then more pressure. And then the coil cap detached, leaving the shaft in the hole. Damnedest thing!!
My mechanic buddy paid hell getting that thing out. It took some innovative tooling and cussing to get it out. We were very fortunate the inside of the sleeve wasn't damaged. Finally, we got to the spark plug and removed it. He had 3 coils from another motor, so he hooked up one to test for spark. Nothing. Hooked up another. Nothing. Hooked up a different spark plug. Presto.
So the plug was bad, but.....which came first, a bad coil causing the plug to fail, or a bad plug causing the coil to fail? Or something else?
The pencil part of the coil was nearly "fused" to the inside of the shaft. It clearly had gotten really hot.
Has anyone experienced this, and were you able to draw any conclusions as to what started the whole thing?
We'll have the new plug tomorrow and put it back together and see what happens.
I had a miss on '04 225 at idle. We popped off each plug wire and found the culprit was the lower port side (#3?). Then we went to remove the coil to inspect the plug and test for spark. Usually these come out easily. This one wouldn't, so we applied gentle pressure, and then more pressure. And then the coil cap detached, leaving the shaft in the hole. Damnedest thing!!
My mechanic buddy paid hell getting that thing out. It took some innovative tooling and cussing to get it out. We were very fortunate the inside of the sleeve wasn't damaged. Finally, we got to the spark plug and removed it. He had 3 coils from another motor, so he hooked up one to test for spark. Nothing. Hooked up another. Nothing. Hooked up a different spark plug. Presto.
So the plug was bad, but.....which came first, a bad coil causing the plug to fail, or a bad plug causing the coil to fail? Or something else?
The pencil part of the coil was nearly "fused" to the inside of the shaft. It clearly had gotten really hot.
Has anyone experienced this, and were you able to draw any conclusions as to what started the whole thing?
We'll have the new plug tomorrow and put it back together and see what happens.