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March 11, 2019 at 5:35 pm
#170975
Buccaneer has covered it. They need 70-75 psi to idle nice. Highest I have ever measured on those models is about 77 psi. And as he stated, make sure the rings are not stuck from sitting a long time. Use a lot of penetrating oil and warm up the block while rotating the crank forward and backwards. This may free the rings without disassembly.