 1975 Carbed 1.8, Rebuilt to a 2.0 |
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| ballsyfacts914 |
 Oct 28 2021, 05:40 PM
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#1
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Member  Group: Members Posts: 82 Joined: 28-August 19 From: East Bay Region-SF Bay Area Member No.: 23,413 Region Association: Northern California  |
Hi All,
Worked on getting the charcoal canister installed last night and when I finished and started the car, I heard this clicking noise that for some reason stood out to me. I did some research and it seemed it could be three things, a leak in the exhaust, a valve issue, or a rod issue. Pulled each of the spark plug wires individually while the engine was on (only minor shocks) and the click didn't go away. I also noticed that the click lessened once the car warmed up. I then reached out to AutoAtlanta and spoke with George, he confirmed the spark plug wire pull while running was a good way to troubleshoot a valve issue. The click did seem to lessen when I pulled the passenger side wires but was still there. George also said that an exhaust leak noise would go away when I revved the engine. In my case the click increases when I rev, though seems to be less. I plan to drain the oil and check if any thing is in the screen, which would indicate an issue with the rod. Lastly, I pulled a video of me starting the car cold and driving up and down my street from two years ago and the click is there. Also, no mechanic I have had it too has mentioned anything sounding off. So, my question is, is it a click or just a normal engine sound? Any advice on how to diagnose further? Should I be worried? Thanks for all your help! |
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| Jonathan Livesay |
Oct 28 2021, 05:49 PM
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#2
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Senior Member Group: Members Posts: 742 Joined: 13-March 10 From: La Canada CA Member No.: 11,461 Region Association: None 
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QUOTE(ballsyfacts914 @ Oct 28 2021, 04:40 PM)  Hi All, Worked on getting the charcoal canister installed last night and when I finished and started the car, I heard this clicking noise that for some reason stood out to me. I did some research and it seemed it could be three things, a leak in the exhaust, a valve issue, or a rod issue. Pulled each of the spark plug wires individually while the engine was on (only minor shocks) and the click didn't go away. I also noticed that the click lessened once the car warmed up. I then reached out to AutoAtlanta and spoke with George, he confirmed the spark plug wire pull while running was a good way to troubleshoot a valve issue. The click did seem to lessen when I pulled the passenger side wires but was still there. George also said that an exhaust leak noise would go away when I revved the engine. In my case the click increases when I rev, though seems to be less. I plan to drain the oil and check if any thing is in the screen, which would indicate an issue with the rod. Lastly, I pulled a video of me starting the car cold and driving up and down my street from two years ago and the click is there. Also, no mechanic I have had it too has mentioned anything sounding off. So, my question is, is it a click or just a normal engine sound? Any advice on how to diagnose further? Should I be worried? Thanks for all your help! You could add engine tin issues to your list. You can get a fairly loud clicking from poorly fitting or cracked tin or even just a screw missing in the wrong place. |
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| Jonathan Livesay |
Oct 28 2021, 05:49 PM
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#3
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Senior Member Group: Members Posts: 742 Joined: 13-March 10 From: La Canada CA Member No.: 11,461 Region Association: None
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Oops, double post due to spastic index finger.
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| emerygt350 |
Oct 28 2021, 06:36 PM
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#4
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Advanced Member Group: Members Posts: 2,132 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
Yeah, I had one of the tin bolts fall out and the rattle scared the hell out of me .of course that is unlikely to change much with rpm.
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| NARP74 |
Oct 29 2021, 10:59 AM
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#5
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Senior Member Group: Members Posts: 1,072 Joined: 29-July 20 From: Colorado, USA, Earth Member No.: 24,549 Region Association: Rocky Mountains |
Try an automotive stethoscope and see if you can locate it more precisely.
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| ballsyfacts914 |
Oct 30 2021, 10:27 AM
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#6
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Member Group: Members Posts: 82 Joined: 28-August 19 From: East Bay Region-SF Bay Area Member No.: 23,413 Region Association: Northern California |
QUOTE(NARP74 @ Oct 29 2021, 11:59 AM) Try an automotive stethoscope and see if you can locate it more precisely. Coming today, updates to come. |
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| ballsyfacts914 |
Oct 30 2021, 01:28 PM
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#7
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Member Group: Members Posts: 82 Joined: 28-August 19 From: East Bay Region-SF Bay Area Member No.: 23,413 Region Association: Northern California |
Hey All,
I drained the oil, checked the screen, and cut open my oil filter. Didn't see anything of concern. But....when I was pouring the old oil into my collection bucket, I saw flakes of metal in the bottom. Guess I am throwing a rod bearing! (IMG:style_emoticons/default/barf.gif) |
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| rfinegan |
Oct 30 2021, 02:23 PM
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#8
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Senior Member Group: Members Posts: 973 Joined: 8-February 13 From: NC Member No.: 15,499 Region Association: MidAtlantic Region
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When i found my knock it was the trust bearing on the camshaft. all the drag and pulling the plug wires did nothing. only at slow speeds and no load did it knock. Makes sense with the beveled gears.
Hope this helps I found the root cause when I split the case. I too had bablit in the screen. that's when i pulled it QUOTE(ballsyfacts914 @ Oct 30 2021, 11:28 AM) Hey All, I drained the oil, checked the screen, and cut open my oil filter. Didn't see anything of concern. But....when I was pouring the old oil into my collection bucket, I saw flakes of metal in the bottom. Guess I am throwing a rod bearing! (IMG:style_emoticons/default/barf.gif) |
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