How many ohms of resistance for ground?

[vancouverbc]

The faq mentions 2 ohms max. I read 6 ohms just in the wire going from neg battery terminal to engine block(probes in the copper at both ends). The reading goes up to 13 ohms if i put the multimeter probe on neg battery terminal and engine block.

also, is it ok to adjust adle using tach in dash or do you need to use handheld tach.

[navysnail]

clean all the corrosion off any of them. make sure your meeter isnt measuring resistance of oxodized areas, those will be significantly higher.

[vancouverbc]

I did the readings again in the same way i did first time and i got .6 etc which is continuity because my meter is digital. For some reason my meter put the decimal in the wrong place.