Key on problem

[twin74s]

When i first turn my key on the speedo jumps to 60mph then goes back to zero when i start it. Anyone got an idea why this would be?


Thanks ahead

 

[cloneman315]

Re: Key on problem

do u hav e a msd?

 

[twin74s]

Re: Key on problem

MSD ignition? No i dont. seems odd. everything works fine

 

[cloneman315]

Re: Key on problem

check your grounds on the intake and under the dash