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'73 OMC 9.5 Help (No Ignition After Repairs/Maintenance)
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<blockquote data-quote="2johnsons" data-source="post: 405514" data-attributes="member: 16298"><p>Check out leeroysramblings.com for a good read. Any cracks in coils=bad. Must have continuity across your points when nothing is connected to the screw and they are closed (false ground reading if everything's connected). Your spark should be able to jump a 1/4" gap.</p><p></p><p>Sent from my SM-G900R4 using Tapatalk</p><p>65 psi is acceptable. I think you're partially right on the compression drawing fuel in but it's on the other side of the piston in the crankcase. With 65psi in both cylinders I doubt it's a ring issue but could be upper crankshaft seal.</p><p>Also you'll have better luck with a emergency start cord wrapped around the flywheel for compression and spark readings (faster flywheel than the pull starter.)</p><p>I could be wrong on some of this but these have been my experiences.</p></blockquote><p></p>
[QUOTE="2johnsons, post: 405514, member: 16298"] Check out leeroysramblings.com for a good read. Any cracks in coils=bad. Must have continuity across your points when nothing is connected to the screw and they are closed (false ground reading if everything's connected). Your spark should be able to jump a 1/4" gap. Sent from my SM-G900R4 using Tapatalk 65 psi is acceptable. I think you're partially right on the compression drawing fuel in but it's on the other side of the piston in the crankcase. With 65psi in both cylinders I doubt it's a ring issue but could be upper crankshaft seal. Also you'll have better luck with a emergency start cord wrapped around the flywheel for compression and spark readings (faster flywheel than the pull starter.) I could be wrong on some of this but these have been my experiences. [/QUOTE]
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'73 OMC 9.5 Help (No Ignition After Repairs/Maintenance)
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