A friend brought his 9N to my shop a couple of days ago and left it. He called and told me that he was afraid he had ruined the "inserts". I couldn't get it started. No fire and no fuel. Out of gas and bad coil, points and condenser before I got it going.
Had a hard time getting the point gap opened up enough. Another Chineese breaker plate. Sure enough there was no oil pressure and bearings were squeeling pretty good. I removed the oil pressure relief valve cap and spring and plunger. Took a lenght of rubber hose and squeezed in about a half cup of 90W oil into the oil pump using an old slime container. Put it back together and fired her up. Oil pressure came right up to around 40 psi. No rattling or squeeling. Ran it for about an hour and pressure held about 20 psi when hot.
I believe he has put something like 10W30 oil in it and that is just too thin to stay in the pump when the pump gets too much wear on it. I am going to recommend to him that he either put 40W oil in it or add something like STP etc to thicken up the oil so the pump will hold it's prime.
Lucky he didn't have to replace the crankshaft. Just a few more minutes with no oil pressure and he would have for sure.
Zane
Had a hard time getting the point gap opened up enough. Another Chineese breaker plate. Sure enough there was no oil pressure and bearings were squeeling pretty good. I removed the oil pressure relief valve cap and spring and plunger. Took a lenght of rubber hose and squeezed in about a half cup of 90W oil into the oil pump using an old slime container. Put it back together and fired her up. Oil pressure came right up to around 40 psi. No rattling or squeeling. Ran it for about an hour and pressure held about 20 psi when hot.
I believe he has put something like 10W30 oil in it and that is just too thin to stay in the pump when the pump gets too much wear on it. I am going to recommend to him that he either put 40W oil in it or add something like STP etc to thicken up the oil so the pump will hold it's prime.
Lucky he didn't have to replace the crankshaft. Just a few more minutes with no oil pressure and he would have for sure.
Zane
