[Healeys] Oscillating oil pressure needle

[David Masucci]

Before going that route, I’d suggest cracking open the feed nut on the back of the pressure gauge wile the engine is idling. Have a pan under it to catch the dripping oil. Air trapped in the line will also cause a bouncing needle even with an engine that is in good condition. 

Dave 

> On Aug 18, 2025, at 6:32 PM, Richard Jim Hockert <rjhco459 at gmail.com> wrote:
> 
> Either worn oil pump or worn bearings can result in pulsating oil pressure.
> 
> Unevenly worn bearings can allow leakage in specific positions during rotation, which will result in pulsating oil pressure, OR
> 
> A worn drive gear on the oil pump spindle or camshaft can cause the oil pump to pulse.  
> 
> Either condition will require inspection inside of the engine - ugh…
> Best regards,
> Jim
> 
>> On Aug 18, 2025, at 4:49 PM, Richard Antal via Healeys <healeys at autox.team.net> wrote:
>> 
>> 
>> Fellow Healeyphiles,
>>      Today my '65 BJ8 showed a rapidly oscillating oil pressure needle whether at idle or at speed. Oil level normal says the dipstick. The oil pump probably has 130K of use. Is this new finding a harbinger of worse things to come? Need I do anything about it? Thanks for any advice offered.
>> Rich Antal
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