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high speed miss

You'll need to be a little more explanatory that that my friend.

With "all" S/plugs removed, What is the compression psi of each individual cylinder?

With "all" S/plugs removed, Does the spark jump a 7/16" air gap with a strong blue lightning like flame at each plug boot?... a real SNAP!

Is this engine new to you or have you owned it for some time?

When is the last time this engine ran normally... and has any preventative type work been done to it since, having your present problem take place shortly thereafter?

What is a glera?.... Are you saying by "4600 rpm is missing" that the engine has actually lost 4600 of its rpms... or that your top rpms now at full throttle is 4600 rpm?

Ya gotta spell it out for us older fellows! :)
 
steveo250 said:
i have 94 evinrude 150 glera,at 4600 rpm is missing . any ideas
Click to expand...
ok ive the boat over a year ,top rpm is around 56or5700 ,the glera is model #, so ive lost a 1000 rpm ,starts,runs fine just around 4600 starts to cut out or miss, just started about 2or 3 weeks ago or fishing trips
 
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