69 oil gauge issue help
Thread Starter
Intermediate
Joined: May 2012
Posts: 46
Likes: 0
From: melbourne Victoria
69 oil gauge issue help
Hi there
i have a 69 350 and the gauge has always read high when on the highway its sit's all the way over the right,
and when i am stopped at lights it sit's in the middle.
when the engine is off i can see oil in the line but it's patchy.
i loosened the brass coupling at the rear of the gauge and started the car when the oil started coming out i tightened it up,
this didn't help.
do i need a new gauge?
see attached photos
cheers
lou
i have a 69 350 and the gauge has always read high when on the highway its sit's all the way over the right,
and when i am stopped at lights it sit's in the middle.
when the engine is off i can see oil in the line but it's patchy.
i loosened the brass coupling at the rear of the gauge and started the car when the oil started coming out i tightened it up,
this didn't help.
do i need a new gauge?
see attached photos
cheers
lou
Melting Slicks
Joined: Dec 2000
Posts: 3,363
Likes: 303
From: Lansdale 19446 PA
2024 C3 of the Year Finalist- Unmodified
St. Jude Donor '10-'11, '15, '19
Lou - I saw a tech paper on Willcox website on how to rejuvenate the oil pressure gauge on a 69.
Your gauge is probably gunked up inside.
Here you go!
Willcox Oil Gauge Repair
John
Your gauge is probably gunked up inside.
Here you go!
Willcox Oil Gauge Repair
John
Last edited by Go Vette Go; Nov 10, 2012 at 08:00 AM.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
First: The oil line will not be fully charged with oil unless you fill the line before you install it to the gauge. Also, having air in the line makes no difference as it just pressurizes to the same level as the oil. In fact, some air in the line will act as a mini-accumulator--dampening any pulsations in the oil system.
Second: Either someone has installed a higher rate regulator spring in the oil pump or a higher pressure pump. It should cause you no problem except for using a little more fuel for the added work it is doing.
Second: Either someone has installed a higher rate regulator spring in the oil pump or a higher pressure pump. It should cause you no problem except for using a little more fuel for the added work it is doing.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
I see no symptoms in your original post that would indicate any problem whatsoever with the gauge. Rebuild/replace it if you want; but another gauge will almost surely do the same thing.
Burning Brakes
Joined: Jul 2009
Posts: 1,240
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From: ESCONDIDO CA
2025 C2 of the Year ('63 and '67) Finalist - Unmodified
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