Joe Here wrote:
On 13 Jul 2003 02:10:42 GMT, (BORDEN1000) wrote:
Greetings
I have a mid 70's era 15 hp Johnson that has been starting and running fine for
the past year. One year ago I replaced the water impeller.
Last weekend I idled down the river about 3/4 of a mile and the engine just
stopped. I looked back and smoke was coming from the engine. Oh
great...water impeller broke??? I paddled back to the ramp and pulled on the
cord. The engine would spin, but I didn't try to start. Back at the house I
ran compression and I am getting 55-60 on both cylinders.
So, aside from buying a new 4 stroke, what are my "home repair" suggestions?
Thanks in advance
BL
I have heat sized a 15 HP Johnson twice, and it still ran OK
afterwards. There was a destinct ring rattle, but it still ran fine.
This last winter I rebuilt it and replaced the rings, and a few other
pats not related to the heat seize. It now runs like new.
My advice is to replace the water pump/impeller and see how it runs.
You won't do any more damage than what's already been done....
Good Luck.
Yes that's a good idea, 55-60 is not bad news as such because the numbers
depend on lots of things, not the least being the type of gauge you were using.
When you pull on the cord if you feel a distinct bouncy sensation on each
compression stroke, it should be OK & if you were only idling when it happened
------------------ certainly worth the trouble of a new impeller & making sure all
the water flow is clear.
K