Visit The Dirt Forum for More Information

Author Topic:   Timing light problem
Dirt Full Roller

Total posts: 32
posted May 19, 2004 05:52 PM  
I bought a timing light last week from autozone. I was in a bind and needed it fast. Tried timing a friends engine and couldn't make any sense of it. What was happening was that it showed 35 degrees initial and when I revved the engine the timing retarded to 20 degrees. Thats completely backwards. I thought maybe it was the ignition on his car. I just put it on mine and it did the same thing. I know my ignition is fine. Is it possible that the dial that controls the timing in the light could be wired wrong. I figure it must be in the light I going to exchange it as soon as I can.

Dirt Forum Champ
Total posts: 755
posted May 21, 2004 10:21 AM  
are those cars you timed running a MSD box style ignition? If they are you cannot accurately time with an adjustable timing light unless you have the motor reved up past 3000 rpms.

Dirt Freak

Total posts: 428
posted May 21, 2004 11:15 AM  
I'm running an HEI dist. with a MSD box. I don't use an adjustable timing light. At what rpm do I need to set the timing at?

Dirt Forum Champ
Total posts: 879
posted May 22, 2004 07:45 AM  
Usually total advance is dialed in at 2500-3000 rpm on a non-locked distributor. If your distributor is locked, you can set it at idle. Most MSD's that I have seen have a curve kit, so ya gotta time 'em in above 2500 rrrrr's. Also, MSD recommends not to use a dial-back timing light on their stuff. Out of curiousity, I tried both a dial-back and fixed timing light on my MSD set-up and got the same result. Go figure......

Dirt Full Roller

Total posts: 32
posted May 24, 2004 06:07 PM  
The cars I tried to time were mini- stocks. My friends was a 2.3 ford with regular dist. no vacuum advance. My car is Toyota the same way. I still don't have a clue what is wrong. I checked my car at the track with a buddys light it was perfect.

Go figure

Ego Racing
Dirt Forum Champ
Total posts: 724
posted May 26, 2004 09:44 AM  
At lower rpm'S an MSD has Multiple Sparks this will cause some timing light problems. What kind and how old are the spark plug wires? I have seen this cause a problem when the other plugs fire and induce voltage into the other wires.

Back to the Archives