Ignition Disconnect LT1
Thread Starter
Safety Car
Joined: Nov 2008
Posts: 3,720
Likes: 554
From: Seattle Washington
Ignition Disconnect LT1
I'm thinking about having a look at a 92 LT1 Auto for sale near by. It looks like a nice Car but its advertised as project car poor running bring a trailer and cash. Looks like he guessed that it needs new plug wires and bought them and when he realized how big of a job it is to replace the wires on these cars he lost interest probably let it sit for a couple of years and now put it up for sale. If I were to take a guess I would go right to the Opti Spark but I'm not one to guess I will go down the road of diagnostics if need be. So, to go have a look at the car I can't exactly take my lift and tools and do a correct determination of the problems. Its going to be 20 minutes of looking it over and I'm either going to buy it cheap if I think its an external engine problem, dirt cheap if I think its an internal engine problem, or run away. Normally on a SBC I would pull the Coil or HEI wire and crank the engine over and listen for a miss telling me its got internal engine problems like a cylinder with no compression. So what's a simple way to do this on an Opti Spark ?
Instructor
Joined: Sep 2017
Posts: 132
Likes: 21
From: By the redwoods via New Hampshire
If your just looking to disconnect the opti you could pull the coil wire. Coil is kind of hidden on the left front of the intake manifold. Youl see a single spark plug size wire going down to the opti.
