OK.I need some advice
Trying to get my M-37 running again after about 2 years of setting. I have had it running and it will idle nicely, but if it dies, it will not start again. It seems to flood very easily.
If I wait a day or so, it will sputter and maybe start, but more likely flood out.
The carb was rebuilt a few years ago and I took it off this weekend and did a quick reclean with carb cleaner (nothing major, no plugs removed). I have 24volt electronic ignition and am getting good spark. compression tests OK.......about 90psi avg.......... I think that would be enough for it to at least cough to life a little. Plugs are good and not wet when I take them out.
Currently I have the PCV hole in the intake plugged since that did seem to help it start the few times I have got it running. Besides, when it doesn't start, this is where I can drain the intake of excess gas.
I got it started again this morning and it idled good. Intake vac reads about 15 inches at idle. Up to 20 when I give some gas....no hesitation.
I can adjust the idle screw on the carb almost all the way in and out with no affect. I did finally kill the engine by turning the screw all the way in. Of course after that, it won't start again and when I take the plug out of the PCV port, gas runs out. I wasn't using the choke at all.
My guess is either I don't have enough compression to "suck" the gas in to the cylinders or the carb is pouring too much gas in and needs a rebuild.
Since I have OK compression and it has run and idled well, I am leaning toward something in the carb.
With the carb being in pretty good shape, I ask the experts here if there is a specific item on the carb that would cause what I am describing? Or if I am missing something else I should check.
Thanks for the advice
John
Trying to get my M-37 running again after about 2 years of setting. I have had it running and it will idle nicely, but if it dies, it will not start again. It seems to flood very easily.
If I wait a day or so, it will sputter and maybe start, but more likely flood out.
The carb was rebuilt a few years ago and I took it off this weekend and did a quick reclean with carb cleaner (nothing major, no plugs removed). I have 24volt electronic ignition and am getting good spark. compression tests OK.......about 90psi avg.......... I think that would be enough for it to at least cough to life a little. Plugs are good and not wet when I take them out.
Currently I have the PCV hole in the intake plugged since that did seem to help it start the few times I have got it running. Besides, when it doesn't start, this is where I can drain the intake of excess gas.
I got it started again this morning and it idled good. Intake vac reads about 15 inches at idle. Up to 20 when I give some gas....no hesitation.
I can adjust the idle screw on the carb almost all the way in and out with no affect. I did finally kill the engine by turning the screw all the way in. Of course after that, it won't start again and when I take the plug out of the PCV port, gas runs out. I wasn't using the choke at all.
My guess is either I don't have enough compression to "suck" the gas in to the cylinders or the carb is pouring too much gas in and needs a rebuild.
Since I have OK compression and it has run and idled well, I am leaning toward something in the carb.
With the carb being in pretty good shape, I ask the experts here if there is a specific item on the carb that would cause what I am describing? Or if I am missing something else I should check.
Thanks for the advice
John
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