MSD wire run
Thread Starter
Pro
Joined: Sep 2006
Posts: 551
Likes: 2
From: Clovis CA
MSD wire run
Just giving a heads up on a problem I repaired today. I have the MSD tach drive dist with a 6a ign. For a couple of weeks I've been chasing a "ghost", miss, stutter, or when I stomp it it and the 4's kick in acted like starving. Been driving her for about 300 miles since rebuild. So I do some trouble shooting, ignition first, wires, coil,can't find anything. Check fuel system,pressure great,floats levels good, carb clean. Sitting in the garage reading over the MSD install guide, twice. Look over car and over, thinking what has changed? After three weeks, phone calls and advise, I'm in the motor compartment cleaning and notice I zip tied the ignition box coil and trigger lines together running along the firewall.
The manufacture says to keep them 5-6 inches apart, NO ****! Wow did that cause wierd issues with no patterns. Reran the wires, smokes right along....
The manufacture says to keep them 5-6 inches apart, NO ****! Wow did that cause wierd issues with no patterns. Reran the wires, smokes right along....
Advanced
Joined: Sep 2006
Posts: 94
Likes: 0
From: Modesto CA.
Dither
Originally Posted by 68RATVT
Just giving a heads up on a problem I repaired today. I have the MSD tach drive dist with a 6a ign. For a couple of weeks I've been chasing a "ghost", miss, stutter, or when I stomp it it and the 4's kick in acted like starving. Been driving her for about 300 miles since rebuild. So I do some trouble shooting, ignition first, wires, coil,can't find anything. Check fuel system,pressure great,floats levels good, carb clean. Sitting in the garage reading over the MSD install guide, twice. Look over car and over, thinking what has changed? After three weeks, phone calls and advise, I'm in the motor compartment cleaning and notice I zip tied the ignition box coil and trigger lines together running along the firewall.
The manufacture says to keep them 5-6 inches apart, NO ****! Wow did that cause wierd issues with no patterns. Reran the wires, smokes right along....
The manufacture says to keep them 5-6 inches apart, NO ****! Wow did that cause wierd issues with no patterns. Reran the wires, smokes right along....
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
Good idea to shield trigger wire pair & to separate twp from the others. You should also twist the pair of trigger wires ... 2-3 twists/inch. Do the same to the pair of coil wires. It works but you'll have to get an EE to explain it for you.
Drifting
Joined: Jun 2004
Posts: 1,881
Likes: 9
From: staten island ny
Originally Posted by 68RATVT
Just giving a heads up on a problem I repaired today. I have the MSD tach drive dist with a 6a ign. For a couple of weeks I've been chasing a "ghost", miss, stutter, or when I stomp it it and the 4's kick in acted like starving. Been driving her for about 300 miles since rebuild. So I do some trouble shooting, ignition first, wires, coil,can't find anything. Check fuel system,pressure great,floats levels good, carb clean. Sitting in the garage reading over the MSD install guide, twice. Look over car and over, thinking what has changed? After three weeks, phone calls and advise, I'm in the motor compartment cleaning and notice I zip tied the ignition box coil and trigger lines together running along the firewall.
The manufacture says to keep them 5-6 inches apart, NO ****! Wow did that cause wierd issues with no patterns. Reran the wires, smokes right along....
The manufacture says to keep them 5-6 inches apart, NO ****! Wow did that cause wierd issues with no patterns. Reran the wires, smokes right along....
ESU
Le Mans Master
Joined: Apr 2000
Posts: 5,202
Likes: 10
From: cincinnati ohio
St. Jude Donor '09
Had the same deal with my Crane HI-6. I mounted the box and coil under the passenger side dash panel on an aluminum plate with some other electronics.
Car ran fine for a couple weeks, then leaving a car show of all places, pop, crackle, pop pop. Tracked it down to the ign. box trigger wire had somehow wiggled it's way to within an inch of the coil wire...........
Car ran fine for a couple weeks, then leaving a car show of all places, pop, crackle, pop pop. Tracked it down to the ign. box trigger wire had somehow wiggled it's way to within an inch of the coil wire...........
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
Originally Posted by ESU
My car came with an MSD installed already and I noticed a bundle of wires cable tied together. My question is whats the trigger wire since I didnt do the install? ESU
Former Vendor
Joined: Nov 2005
Posts: 683
Likes: 1
From: Mounds View Minnesota
Grounds are important also.
I had a weird pulsing interior light issue untill I tied all my electrical stuff (MSD, Fuel pump, Fans) to the same frame ground point.
So make sure your grouns are good and as close together as possible
Keith
I had a weird pulsing interior light issue untill I tied all my electrical stuff (MSD, Fuel pump, Fans) to the same frame ground point.
So make sure your grouns are good and as close together as possible
Keith
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer