Merk 150 hp, no spark
 

John,
Unfortunately this is more complicated than the points and condenser
ignition and requires a special peak volt meter. There is a long shot try
that may identify the problem easily and that is to locate the rectifier,
disconnect it and crank the engine looking for spark. Beyond this there is
a lengthy procedure to verify the peak voltage from the stator, trigger
voltage, and a pack failure. These parts are expensive items to replace and
most shops will only replace the full electronics package to prevent one
component from damaging another. The wiring is a type of high voltage
insulated rubber that with the age of your motor will very likely be dried
out and cracking causing shorts to ground. If this is the case, you may
have some luck trying to put rubber tubing in place of the dried insulation.
If you live near Kansas City, I can help. Sorry for the bad news.

Don Dando

Merk 150 hp, no spark
 

thanks don

my merc is an oldy and still has a distributer.

most of the parts you list aren't on this motor, beleave me i looked.
i spent 2 hours last night messing with it before it really hit me that
it had a dis the trigger was in the dis not under the flywheel.

i've owned a lot of boats and had ob's from the 50's 60's 80's and 90's
but this is my first 70's motor so i did a little tail chasing but i
think i am moving forword now.

anyway i am in kc too. what kinda boats you got? what lake you use?


JOHN


Don Dando wrote:
John,
Unfortunately this is more complicated than the points and condenser
ignition and requires a special peak volt meter. There is a long shot try
that may identify the problem easily and that is to locate the rectifier,
disconnect it and crank the engine looking for spark. Beyond this there is
a lengthy procedure to verify the peak voltage from the stator, trigger
voltage, and a pack failure. These parts are expensive items to replace and
most shops will only replace the full electronics package to prevent one
component from damaging another. The wiring is a type of high voltage
insulated rubber that with the age of your motor will very likely be dried
out and cracking causing shorts to ground. If this is the case, you may
have some luck trying to put rubber tubing in place of the dried insulation.
If you live near Kansas City, I can help. Sorry for the bad news.

Don Dando

Merk 150 hp, no spark
 

This post is totally non-applicable to the Merc 1500. It is applicable ot
the 1980's inlines.

-W

"Don Dando" wrote in message
. net...
John,
Unfortunately this is more complicated than the points and condenser
ignition and requires a special peak volt meter. There is a long shot try
that may identify the problem easily and that is to locate the rectifier,
disconnect it and crank the engine looking for spark. Beyond this there
is
a lengthy procedure to verify the peak voltage from the stator, trigger
voltage, and a pack failure. These parts are expensive items to replace
and
most shops will only replace the full electronics package to prevent one
component from damaging another. The wiring is a type of high voltage
insulated rubber that with the age of your motor will very likely be dried
out and cracking causing shorts to ground. If this is the case, you may
have some luck trying to put rubber tubing in place of the dried
insulation.
If you live near Kansas City, I can help. Sorry for the bad news.

Don Dando