this might be a stupid question but is there a certain color your spark should be coming from the condenser things to the spark plug wires. The condenser things are the two black boxes that are labeled T1 T2 and L1 L2. I was just wondering because I wanted a way to figure out if I needed to replace them.
If I get spark from them at all does that mean that they work or should I look for a certain color. I know you shouldn't take the wire off the end of the condenser thing while it's running but can anyone tell me how to check it.
'87 RX-7 T2 (the project begins...)
Posted by kick7ca
"I find rubbing the hood intensly aids in warming the car, as well as breathing on the steering wheel."
Thick and blue. But it sounds like your testing methods are not quite right.
If you are going to check spark, you want to bring a ground close to the output of the coil. About 1/4" is the correct distance. If you are going to check spark at the plugs, then remove one from the engine and lay it on the fender. Clip it's ground to a body ground with a small jumper cable. Or better yet, use a proper spark tester.
Is your ignition breaking up? Why do you think you have a problem. You really need a tester to find what you're looking for. Best you're going to get with your method is questionable results and a sore finger or two.
My engine idle is a little rough sputtering. So I suspected misfires, and I replaced my wires with jacobs 8.5's. I replaced my plugs just a week ago. So I figure the problem is futher up the system in my coils.
What kind of tester do i need for this kind of work. A multimeter?
well, I might look for a leak later, and replace all those old hoses, but right now i'm just trying to find my perfect spark so I know that's not the problem. Once I know I have great spark or at least decent spark then I'll go to vacuum leaks.
At about 1/4", the spark should be thick and blue. I would worry if it was thin and orange at that gap. At least, every FC I have tested for spark showed a nice thick arc at that distance. 1st gens tend to have a much weaker spark.
To the original poster, the only way to test properly is with a spark tester. Not a timing light, not a jumper cable, etc. A spark tester is basically a spark plug with a slightly wider gap and an alligator clip connected to the ground. You clip the plug to the engine, connect the coil, and then start. You can now directly observe the spak. Thick and blue, with a defined "snapping" sound.