FORUM RULES UPDATED - The forum rules have been updated to continue to provide a friendly and safe environment for our member community. Please take a moment to review the updated rules and our terms of use and privacy policy. Click here for Forum Rules which has links to the 'terms of use' and 'privacy policy'.
can anybody tell me why i lose my tach signal at 3500 t0 4000 rpm its a 79 johnson 70 hp all wiring is correct all settings on tach is correct also the tach is telflex tach do i need a resistor also it does come back at idle only happens at full throttle any help would be great
