tension

Hello, So im working on a Hyundai 1.6 SOHC (09 Accent, 95000km) that developed a knock that increases with RPM and seems to be louder when in gear. Sounds like it is coming from the front of the engine. -Did the screwdriver listening test to all cylinders without much change. -Have lifted the...

Can anyone help me out? I have a JUKI 1541, I used 16, 18, 19 needles with v92 Poly from Sailrite. Whats going on is that when I fold vinyl, it sews perfect, when I sew a welt, it birdsnest... I call it a GREMLIN in my JUKI...