Jumpy Tach

[LWD]

My tachometer occasionally jumps. It's not constantly, from what I'm noticing it will do this for a few times, about once an hour or so. Any ideas on what is going on? If this is going to get worse, I'd rather be prepared for it. The video is a little jumpy, just like my tach.

This is a 2001 SeaRay 190 Sundeck, with a 4.3L EFI Vortec.

 

[Scott Danforth]

my guess bad connection somewhere or the tach is going south

 

[LWD]

my guess bad connection somewhere or the tach is going south

I guess tomorrow I'll be checking my connections, making sure they're clean and snug. Thanks, that's a good place to start.

 

[Scott06]

There will be a switch /knob on the back of the tach to adjust it for 4,6,8 cylinder engines. Sometimes cycling it between the cylinders and back to 6 can help

 

[LWD]

There will be a switch /knob on the back of the tach to adjust it for 4,6,8 cylinder engines. Sometimes cycling it between the cylinders and back to 6 can help

Thank you sir, I'll be sure to do that while I'm there.