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Old 04-12-2021, 07:45 PM   #1
Rich72C10
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Question Oil Gauge Noise (Ticking)?

So I think my oil gauge is ticking. It's been bugging me for a bit now and I have just decided to focus on it after eliminating other things that move in the dash.

1. I don't hear it in the engine bay or under - so I am pretty sure its not coming from there or a exhaust leak.
2. If I have the door open while reving it up to 2.5k, I can't hear it over the engine.
3. Starts to peak / coming in around 2k or so. Let it go to idle its all but gone. So when you are driving with the AC on low at 65 you hear it real good (ugh).
4. I can bend over grab the oil line and "feel" the ticking pattern (matches what I hear).

So, is this a thing that your oil gauge can tick? I am not finding any search hits so it has me wondering if I am wrong here.

I do have a new line from LockDoc but I haven't installed as I need to get a new firewall grommet (actually, I need to get two, another one to seal up the old wiper holes pass-through). I doubled check to insure it isn't touching something (like vibrating on something metal). Though I suppose I could wrap it in some electrical tape to completely rule that out. I also suppose I could figure out a way to disconnect the line from the engine and block it off for a test...

Anyways, though I'd ask here before I start pulling to much apart LOL
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'72 Chevy C10 Cheyenne *Super WHT/MED BRONZE/WHT
SBC 350 | TH350 | LWB | AC | Buddy Seats
Upgrades: Tilt | Front Sway Bar | Radio | Sliding Window | Bed Spare w/Lock
Bed Rails | Full LEDs | Courtesy Lights | Tachometer | Glovebox Lock & Light | Head Light Relays | *Upgraded Fully Super Trim
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Old 04-12-2021, 07:47 PM   #2
Rich72C10
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Re: Oil Gauge Noise (Ticking)?

actually, when I searched - lots of things came up but none of the things I want it to be LOL
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'72 Chevy C10 Cheyenne *Super WHT/MED BRONZE/WHT
SBC 350 | TH350 | LWB | AC | Buddy Seats
Upgrades: Tilt | Front Sway Bar | Radio | Sliding Window | Bed Spare w/Lock
Bed Rails | Full LEDs | Courtesy Lights | Tachometer | Glovebox Lock & Light | Head Light Relays | *Upgraded Fully Super Trim
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Old 04-12-2021, 10:00 PM   #3
Luvlegs
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Re: Oil Gauge Noise (Ticking)?

Swing in the dark - any chance the tach or speedo cable is causing the tick (needs lube)?
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Old 04-12-2021, 10:11 PM   #4
Rich72C10
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Re: Oil Gauge Noise (Ticking)?

Naw, this last test is in the garage and I disconnect the tach from the coil. Its most def coming from the gauge/line - I gave the line a good hold and the tick is more or less muffled to near nothing the closer I hold to the gauge.
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'72 Chevy C10 Cheyenne *Super WHT/MED BRONZE/WHT
SBC 350 | TH350 | LWB | AC | Buddy Seats
Upgrades: Tilt | Front Sway Bar | Radio | Sliding Window | Bed Spare w/Lock
Bed Rails | Full LEDs | Courtesy Lights | Tachometer | Glovebox Lock & Light | Head Light Relays | *Upgraded Fully Super Trim
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Old 04-12-2021, 10:43 PM   #5
Rich72C10
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Re: Oil Gauge Noise (Ticking)?

Found and fixed, or pretty sure of it. I had to flip on my back and look up at the copper line path.

Where the line comes out and starts a not very good loop (there is like a mile of copper line under the dash) it was slap up against the brake pedal brace. I tighten the loop up a bit and made sure between the gauge and the firewall it wasn't touching anything. Well other than one of the AC hoses, impossible for this line to miss it. I think it is one of the defroster hoses that is right in front of the gauge.

Test drove with windows up, AC off, and no radio - no ticky tack noise. We'll see if that holds.
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'72 Chevy C10 Cheyenne *Super WHT/MED BRONZE/WHT
SBC 350 | TH350 | LWB | AC | Buddy Seats
Upgrades: Tilt | Front Sway Bar | Radio | Sliding Window | Bed Spare w/Lock
Bed Rails | Full LEDs | Courtesy Lights | Tachometer | Glovebox Lock & Light | Head Light Relays | *Upgraded Fully Super Trim
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Old 04-13-2021, 08:25 PM   #6
MikeB
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Re: Oil Gauge Noise (Ticking)?

Yep, just a couple 2" diameter loops somewhere in the line will cure the ticking. Don't ask me why. When a buddy told me that many years ago, I thought he was kidding. But I did it anyway and it fixed the problem!
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1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes.
1982 C10 SWB -- sold
1981 C10 Silverado LWB -- sold, but wish I still had it!
1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming.
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