Re: 1975 Johnson 135 any good?
Well I got the boat and motor. The compression was 155-160 on all 4. I got it home and it started up pretty good on the muffs the first time but after I let it sit it did not want to start so I ran the high idle up and it finally started but was smoking really bad but picked up rpms eventually and stopped smoking as bad and went back to normal and did this the next time I started it too. The owner said he had only taken it out 3 times in the last 2 years but started it in the yard on muffs every now and then. He said the carbs were rebuilt earlier this year. What does it sound like the problem could be as far as the smoking bad and then jumping rpms back to normal?
might be old stale gas in it, I would drain it all and use it for the lawn mower. it will smoke but run fine in it.
start with fresh new gas and you know what you have.
on our old 90hp rude it smoked a lot at first start up but after that not much, but usually the first start up at the launch and you were always in a cloud of white smoke.
it all depends on the boat its mounted on but I will caution with these motors they have a habit of the power head sitting low to the water when its just floating so if you will be standing at or on the transom fishing you should raise the motor slightly because the bottom two plugs are close to touching water if someone stands over the motor (like on our fantail 21') and this could cause the porcelain on the plug to crack and misfire.
