I did a leak down test on my sons engine and found that the pressure drop was at 30%. So I decided to move his stuff over to my engine.
My leak down came back at about 7%. I was running a 7100 coil so I had to put his 6100 on it and then I checked and set the valve lash to .002 and reassembled.
Now the pull cord is extremely hard. It will fire up, but when I am giving it gas on the stand it won’t get past 4500 rpm or so. I have no idea where to start trouble shooting without just tearing everything back down. Any suggestions would help.
Thanks for the advice. The air was leaking out of the bottom end. I was able to reset the lash and that fixed the hart to start issue. Reset the carb again and everything worked as it should.