Reply To: ?????? Question Johnson QD-16

[WAYNE]

I think you are looking for a problem that may not exist. The fact that every motor reads 50 psi is a red flag. I have never seen a 1950’s OMC with compression below 60 psi that would run. In fact, 60 psi seems to be the basement of whether it will run or not. I’d prefer to see 70 psi or better. Every gauge reads differently, but the difference shouldn’t be that big. I suspect your gauge is reading low or not sealing properly. Either way, don’t start tearing things apart, yet. Start with the basics first.

Wayne
Upper Canada Chapter

uccaomci.com