74 2.0 F.I. NO spark, Ran before new battery |
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74 2.0 F.I. NO spark, Ran before new battery |
Nemisus |
May 17 2015, 02:14 PM
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#1
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Member Group: Members Posts: 82 Joined: 1-October 11 From: North Bay CA Member No.: 13,631 Region Association: Northern California |
So I am stumped. When I took delivery of my newly acquired 74 914 the car would start up just fine with a jump box.
I went out and bought a new battery and now I have no spark... at lest from I can tell doing the simple spark tests I have done. I just did an Ohms test on my Ignition coil and here is what I got Primary: 1.4 Secondary: 10.41 Per the Pelican Technical Article I should see readings like this: primary coil winding's should give a reading of 0.3-0.6 ohms. Secondary coils should be near 600 ohms. If I understand my results I am significantly higher than where I should be? But does that mean my coil is is the cause of no spark. The only thing I changed was a busted fuel line and put in a new battery... Now the car will not start. Any ideas on where else to look? Thanks in advance Cheers Nem |
Dave_Darling |
May 17 2015, 03:37 PM
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#2
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914 Idiot Group: Members Posts: 15,048 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
Look for anything you might have bumped when changing the battery. Look for blown fuses at the relay board or in the fuse box under the dash. Look for bad connections at the battery (+) and (-) terminals.
--DD |
Nemisus |
May 17 2015, 04:34 PM
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#3
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Member Group: Members Posts: 82 Joined: 1-October 11 From: North Bay CA Member No.: 13,631 Region Association: Northern California |
Look for anything you might have bumped when changing the battery. Look for blown fuses at the relay board or in the fuse box under the dash. Look for bad connections at the battery (+) and (-) terminals. --DD Dave, Thanks for chiming in! One thing I forgot to mention was the battery has been relocated to the rear trunk. I thought that maybe I disturbed the positive connections just enough to cause a short or dead spot. For good measure I must redid the positive side connections in hopes that would do the trick. Still nothing. I just checked all the fuses under the dash and found two in a box on the drivers side just left of the engine by the firewall. Any other locations I should check? Its odd as I've got power to the Ignition Coil, I just don't have anything coming out of it to generate spark to the plugs. I read somewhere I should here a high pitch whine or squeal when I turn the key on... this lets me know that high power ignition is working. I can say for certain that I do not here such squeal. But then can't say that I have and had it running before the new battery. I am really scratching my head on this one |
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