Sorry guys, no manual as yet. Second hand Johnson 30 ELED, starts and idles fine, runs fine at full throttle but takes ages for revs to come up. Compression test is not good with 70 PSI both cylinders which explains a lot. Head is off and bores and pistons look fine. No scratches, gouges and some hone marks still visible in the cylinder. Not much carbon on piston crowns. Head gasket is sus though between both cylinders but I'm not sure. Head gasket on the way but following questions.
1. Gasket goes on dry or needs sealant?
2. Torque specs? I'll start at middle and work out. Bottom ones will be best effort though as no torgue wrench will fit between bolt and cowling.
3. Any sealant on bolts?
Any other reason why compression could be so low? Rings lost tensions due to overheat? I'll start with the head gasket as its easy. If it's anything else I'd reckon it's time for another engine.
Many thanks!
1. Gasket goes on dry or needs sealant?
2. Torque specs? I'll start at middle and work out. Bottom ones will be best effort though as no torgue wrench will fit between bolt and cowling.
3. Any sealant on bolts?
Any other reason why compression could be so low? Rings lost tensions due to overheat? I'll start with the head gasket as its easy. If it's anything else I'd reckon it's time for another engine.
Many thanks!