i have a problem with muy motor it s not running, the stater works fine. But
it(the motor) does not runs. is there a way to test the strator and the
power pack other than checking the spark plugs. I mean a voltimeter test.

Juan Omar Castillo wrote:
i have a problem with muy motor it s not running, the stater works fine. But
it(the motor) does not runs. is there a way to test the strator and the
power pack other than checking the spark plugs. I mean a voltimeter test.

Yes, but there is no evidence from what you've posted that it's an
ignition problem yet, if there is then it could be a problem you cannot
detect with a voltmeter, and if you don't know how to do the voltmeter
checks, you really need in-person help from a knowledgeable friend or
an outboard mechanic, who will check other things before any of that.

What other things???

escribió en el mensaje
oups.com...
Juan Omar Castillo wrote:
i have a problem with muy motor it s not running, the stater works fine.
But
it(the motor) does not runs. is there a way to test the strator and the
power pack other than checking the spark plugs. I mean a voltimeter test.

Yes, but there is no evidence from what you've posted that it's an
ignition problem yet, if there is then it could be a problem you cannot
detect with a voltmeter, and if you don't know how to do the voltmeter
checks, you really need in-person help from a knowledgeable friend or
an outboard mechanic, who will check other things before any of that.

Not enough information.
What happened the last time the engine was running?
Did it run ok with full power?
When the starter motor runs does the engine turn?
Could be any of a number of things
If the engine turns, remove a spark plug, reconnect the plug lead, lay it
against the engine, operate the starter, can you see a spark?



" Juan Omar Castillo" wrote in message
...
i have a problem with muy motor it s not running, the stater works fine.
But
it(the motor) does not runs. is there a way to test the strator and the
power pack other than checking the spark plugs. I mean a voltimeter test.

"BrianR" escribió en el mensaje
...
Not enough information.

What happened the last time the engine was running?
i bougt it like that, they told me that was the power pack the problem,
so i buy a new PP and i installed my self without success.
Did it run ok with full power?
not sure
When the starter motor runs does the engine turn?
yes it does, it turns very good
Could be any of a number of things
If the engine turns, remove a spark plug, reconnect the plug lead, lay it
against the engine, operate the starter, can you see a spark?
no i do not see a spark, i tried every one. Also i measure the volts
(where the cables from the strator are connected) in the PP and they are
very low the highest was like 4v and the other ones -1.



" Juan Omar Castillo" wrote in message
...
i have a problem with muy motor it s not running, the stater works fine.
But
it(the motor) does not runs. is there a way to test the strator and the
power pack other than checking the spark plugs. I mean a voltimeter test.

Not enough info....

First off, what kind of motor??? I presume from the use of a
power pack that its an outboard. Who makes it and what year???

Tell me this info first and we can go from there.
There are all different types of setups out there for different years!

Tom

Juan - just as a point of reference, go to the forums at iboats.com and
look at their FAQ's. There's a good one on troubleshooting an engine
that won't start.

Since your starter works, it could be compression, could be fuel, could
be timing, could be spark (any others? I'm an amateur).

Much about procedure on everything I mention below in this newsgroup
and the Iboats.com forums.

Compression testing is very easy and should be done regardless on any
motor as a baseline, even if it's running well. You'll not only get a
clue if your engine has good compression, but in the future, you'll
know if it's changing for the worse (or better). You need a $25 tool,
or borrow one. Best to use same tester for future tests because each
one will tend to read different, and you want to know if it's a real
change or just a tester change.

For spark, first and foremost get a new set of CORRECT new plugs gapped
properly (don't assume previous owner had CORRECT plugs in it), the
basic test is to take out the plug, ground it against the engine and
see if it's sparking. A better test of the entire system is to get an
actual adjustable spark tester and test the power of the spark at each
plug. Make sure it's adjustable. This is a $10 tool available almost
everywhere, or you can make one. You can adjust the gap on these
testers and if the spark's good you pretty much know the power being
delivered to the plug is good. Then you "only" need to troubleshoot
the fuel and the timing.

If the spark is bad, then you need to troubleshoot backwards through
the wires, coils, stator, etc. I've troubleshooted (?) coils and wires
before - that's really simple. Haven't had the pleasure of stator yet.

For an old engine with unknown history, I'd probably would just go
ahead and thoroughly clean rebuild the carb(s). It really is simple for
an amateur if you have a decent (oem or aftermarket) shop manual, a
correct rebuild/gasket kit and reasonable care and patience. The kits
are cheap. There's much about this on those Iboats.com forums as well.
The downside to dirty carbs is so bad (catastrophic failure due to fuel
starvation and resulting lack of lubrication) that it's just good to
start with clean carbs.

Then, finally, with a decent shop manual, it is also within the scope
of an amateur to do a "linc and sync" and basic setting of the timing
system.

I'm no pro mechanic but have muddled through a lot of this stuff - it's
just a matter of following a rational troubleshooting procedure and not
going at it willy nilly. That's why I urge you to look at that faq I
was telling you about. And as you go along each step, post for advice
on specific things.

It is a mercury 500 50 hp i think is a late 70's


escribió en el mensaje
ups.com...
Not enough info....

First off, what kind of motor??? I presume from the use of a
power pack that its an outboard. Who makes it and what year???

Tell me this info first and we can go from there.
There are all different types of setups out there for different years!

Tom

thank you very much Camilo very helpful your advice.
Do you know the name of the tools ???

Humm, ok. I presume that's a thunderbolt ignition on that one.

I do recall that Merc used to use a tigger that was located in
the distributer. How many coils are located in there?
Some had one coil per cylinder, others used one coil that
went to a distributer.

If you look at the distributer assembly, there should be 2 or 3 wires
coming
from it that goes to the power pack. That in effect is the trigger.

What you need to do is make sure that you are first getting power
to the power pack. From there you can have the ignition key on,
(leave the existing spark plug wires the way they are) and
put the positive side of the volt meter to the low voltage side of the
coil (this would be the wire coming from the power pack)

With this connected you can manually move the flywheel. You
should see the needle on the volt meter bounce quickly then
stop. If you use the starter it might go by too quickly to realize.
(its basically sending a 12volt signal to the coil. The coil should
energize and create the spark. (when you are doing this, the
key needs to be on the ON position to throw power to the power
pack!)

If you are getting power to the coil and that's it (no spark), you most
likely
have a bad coil. If there is no power going at all to the coil
from the power pack, you need to check to make sure that the
trigger is working. Pretty easy thing to check, its only a switch
that turns on and off depending on its location at the moment.
I believe that there 3 wires going to it. One is power and the other
two are the switching mechanism. You should see something happen
when you turn the flywheel.

If its not doing anything then you can have an issue with the
distributer.
The trigger on that is built into the unit, so a new or used
replacement
would be necessary.

If you really want to get move involved, try a local boating store and
get the shop manual. They have generic information like I provided
above but may be a little more in depth. You local library may have
something too, and that's not going to cost you anything.

If you are looking for parts or another motor, you might want to check
out ebay. A quick search on there turned up a few motors of that
vintage
in different parts of the country. If your lucky it might be close to
you.
Might be worth it considering the distributer on these things are
expensive
and somewhat hard to find.

Tom