RESOLVED - turns out I had a bad test lead. Should have checked that before posting. Tach works just fine with with my Pertronix ignition.
Wiping egg off my face now.
Thanks for all the responses. You may chuckle, but my tach is actually an old Heathkit auto analyzer that is pretty much the same age as the truck! So they should actually get along with one another.
I'm following the Heathkit instructions as to how to hook it up. However, given the age of...
I'm on my second Pertronix ignition - the points replacement kit. I've been very pleased with it, BUT my tachometer shows no reading. It worked just fine when I was running the regular points.
I contacted Pertronix and they gave me 4 possible solutions, but each required installing either a...
Bashed this pretty good. Cannot get socket on the plug. I'd like to retain as much of the protection ring as possible but get clearance for the socket.
All suggestions welcome.
And why is this not a great option for high altitude owners? Perhaps a little basic education on timing and advance at different altitudes would be highly educational for us. Thanks for your support to Mud members!
Here’s what I know... It came on my 6/74 FJ40 but don’t know if it’s the original.
I tried to clean the label with carb cleaner and it removed some of the paint. I won’t make that mistake again!
Here are the numbers on the label:
19100-60066
029100-2720
F. 5M (stamped on the label)...
A huge thanks to all of you. This is really excellent information and confirms my actual experience so far.
However, I want to make sure I don’t have things completely backwards, based on what I read in the article attached to 1969FJ’s post.
That article says you turn the distributor...
Here is the background. 6/74 FJ40. Engine was de-smoged and it has headers. I was told the original owner milled down the heads for better compression but compression now is just OK. Everything else is pretty original. Oh and I’m at 9000 ft elevation.
I set timing with a light and it idles...
Thanks everyone. Some great suggestions. I drained the tank thru the disconnected fuel line hose and a small amount of particles came out at the end which didn’t seem bad. I may try and pull the sending unit and do a mirror inspection. And the tip about corrosion starting from the exterior...