 No spark. Replaced everything. Still no spark. Now what? |
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 Jan 10, 2014 - 5:11 PM
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Enthusiast Joined Jan 9, '14 From Asheville NC Currently Offline Reputation: 0 (0%)  |
So, I am stymied. My '96 ST died in the cold in Boston overnight bt 1 and 2 January. The overnight temps were -20 F, give or take. I was running errands the evening of the first, and it seemed to be running fine. The morning of the 2nd she would crank and crank, but not catch. I have since moved to NC where I have a garage and temps in the 40s. I have confirmed she isn't getting a spark or maybe an occasional weak one. I have replaced: distributor cap and rotor, battery, coil, and igniter. Still no love. I am a decent home mechanic, but I can't read wiring diagrams. Where to go from here? *bangs head against desk*
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Jan 10, 2014 - 5:38 PM
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 Enthusiast  Joined Feb 23, '12 From Warrior, AL Currently Offline Reputation: 0 (0%) |
The distributor itself?
-------------------- 2001 Miata LS 5-speed
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Jan 10, 2014 - 6:44 PM
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Enthusiast Joined Jan 9, '14 From Asheville NC Currently Offline Reputation: 0 (0%) |
Yeah, I was trying to avoid that. $300 at the parts store. $100 at the local yard. I guess I'll suck it up and get the junk yard replacement tomorrow and give it a try.
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Jan 10, 2014 - 8:17 PM
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Enthusiast Joined Feb 23, '12 From Warrior, AL Currently Offline Reputation: 0 (0%) |
The only other thing I could figure would be the ECU, or somewhere in the wiring has gone awry.
-------------------- 2001 Miata LS 5-speed
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Jan 10, 2014 - 9:34 PM
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 Enthusiast Joined Aug 15, '10 From The Best Coast Currently Offline Reputation: 12 (100%) |
Replacing the distributor wont fix this if you have no to faint spark. I see no mention of replacing any wires such as the coil wire or spark plug wires. You need to test to see if the coil has power, and move down the line from there to the coil wire, then the spark plug wires, ect ect. How did you test for spark?
This post has been edited by SupraKid: Jan 10, 2014 - 9:35 PM |
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Jan 11, 2014 - 3:57 PM
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Enthusiast Joined Jan 9, '14 From Asheville NC Currently Offline Reputation: 0 (0%) |
Changed out the distributor today, still no love. Every part has been changed now. I tested for spark by pulling a plug and watching while someone cranked the engine. I know it's not ideal to turn it over without a plug in the cylinder, but I don't have an extra plug hanging around. I have confirmed that the coil is receiving 12.5v with the key in the on position. The distributor came with a coil wire, so that got changed too. The pickup tests fine. What other wires should I test? Sorry for the basic questions, but an electrician, I ain't.
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Jan 11, 2014 - 5:00 PM
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 Moderator Joined Jun 29, '08 From Denver Currently Offline Reputation: 59 (100%) |
Did you touch the spark plug to the head to ground it and make sure it will fire?
-------------------- "Employ your time in improving yourself by other men's writings, so that you shall gain easily what others labored hard for." -Socrates. Even Socrates told us to use the search button!
 2006 Aston Martin V8 Vantage. 1998 Celica GT- BEAMS Swapped. 2022 4Runner TRD Off Road Prenium. 2021 GMC Sierra AT4. |
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Jan 11, 2014 - 10:52 PM
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 Enthusiast Joined Apr 24, '13 From Tomball, TX Currently Offline Reputation: 3 (100%) |
a1auto has cheap replacement parts and all the parts I've ordered from them have been great.
-------------------- "As a professor of science, I assure you we did, in fact, evolve from filthy monkey-men." -Prof. Farnsworth
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Jan 12, 2014 - 10:58 PM
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Enthusiast Joined Feb 23, '12 From Warrior, AL Currently Offline Reputation: 0 (0%) |
Can test the plug wires. The first mistake was running off and throwing parts at it, could have used a voltmeter to rule a majority of things out. Not sure about the OBDII cars but if it has a crank or cam sensor and it's bad that could be one cause.
This post has been edited by Box: Jan 12, 2014 - 10:59 PM -------------------- 2001 Miata LS 5-speed
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