Engine barely turns over, need help |
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Engine barely turns over, need help |
solex |
Jun 20 2020, 10:41 AM
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#1
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Senior Member Group: Members Posts: 789 Joined: 12-January 05 From: Long Island, NY Member No.: 3,439 Region Association: North East States |
I have done a lot of work and had the car running fine for serveral but now I have an electrical problem that I cannot seem to find.
Symptoms: Starter will turn a few degrees but will not turn over the engine when I release the key the starter will turn over a few more degrees as though I still have the key in the start position. What I checked:
Recent work done (may not be relevant):
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solex |
Jun 20 2020, 01:10 PM
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#2
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Senior Member Group: Members Posts: 789 Joined: 12-January 05 From: Long Island, NY Member No.: 3,439 Region Association: North East States |
I cannot believe that the ground strap was the problem. I replaced it two years ago.
I removed the strap, checked the resistance at 0.1 ohm, cleaned up the strap (it did not need much cleaning) replaced the nuts and washers with stainless, chased the threads on the chassis stud, the car started right up... Thank you all for the quick replies, I was getting really frustrated, all I wanted to do about 3 weeks ago was dial in the timing with my new digital timing light and it turn into a likely unnecessary starter rebuild and tearing in to my interior showing me the minor rust I need to repair. Have a happy fathers day all. |
Spoke |
Jun 20 2020, 02:21 PM
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#3
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Jerry Group: Members Posts: 6,986 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
I cannot believe that the ground strap was the problem. I replaced it two years ago. I removed the strap, checked the resistance at 0.1 ohm, cleaned up the strap (it did not need much cleaning) replaced the nuts and washers with stainless, chased the threads on the chassis stud, the car started right up... Thank you all for the quick replies, I was getting really frustrated, all I wanted to do about 3 weeks ago was dial in the timing with my new digital timing light and it turn into a likely unnecessary starter rebuild and tearing in to my interior showing me the minor rust I need to repair. Have a happy fathers day all. Good news! (IMG:style_emoticons/default/beerchug.gif) Likely it wasn't the strap but it was the connections to the chassis. It doesn't take much dirt, oxidation or rust to create a very large resistance even if the bolts are tight. You did exactly the right thing by cleaning up all the metal around the connection. One thing you didn't mention was if you wire wheeled the chassis around the stud. About the 0.1 ohm resistance of the cable, it is very difficult to accurately measure resistances below about 0.5 ohm. Many times touching the 2 probes together will yield 0.1 or 0.2 ohm so the DMM has to be zeroed out. At least you didn't measure 5 or 10 ohms. |
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