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On 27 Jun 2004 07:26:16 -0700, (edwin van gorp)
wrote:

Hi Guys,

Thanks for the tips.

I've checked and cleaned the jet again (was clean already) but this
carb doesn't have needle. So couldn't check that one. It has a valve
that opens up or closes with throttle movement.
There is fuel in the bowl and float seems to work fine.
Tried squirting fuel in the carb and related to the amount of fuel the
plugs still seemed relatively dry. I got one loud explosion which
seemed to come out of the exhaust.
Another thing is that the upper plug gets wetter than the bottom
plug?!?
Compression is fine. Not sure what a sheared key is (I'm Dutch)

The key (woodruff key) is a smal piece of metal that slides into the
groove in the flywheel and the shaft, it's main purpose is for timing
the coils and magnets. If it's broken, yout timing will be out.

Getting fitter and fitter with every tip. That's positive though
(bloody manual start ;-))

Eddy

Derek wrote in message . ..
On 26 Jun 2004 06:40:21 -0700, (edwin van gorp)
wrote:

Dear Friends,

I'm trying to fix an old 2-stroke mariner 28 Hp and I keep running
into the same problem.

I have cleaned the carburator about ten times but when I try to start
the sparkplugs stay dry even with full choke and full throttle! It's a
manual start so I'm starting to look like schwarzenegger!

I've checked these points:
The fuelpump squirts out fuel when trying to start.
When carburator is open I can blow through the nozzle (no
obstruction).
Tried sheet of paper in front of air-filter - sucks in air.
Plugs spark (nothing to do with the fuel though).

And now..... I don't know any more.

Maybe you have some good ideas.

Thanks

Eddy

OK, here's my thoughts.

You have spark but the plugs aren't wet. Try squirting a little fuel
into the carb, see if something happens, see if plugs are damp.

If no joy, remove flywheel and see if key is sheared. If all seems
fine, I'd still suspect the carb, unless your compression is
non-exisant.

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