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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: philo_beddoe on September 06, 2015, 01:25:47 pm

Title: More on low oil pressure reading...
Post by: philo_beddoe on September 06, 2015, 01:25:47 pm
I saw a post titled "low oil pressure reading",  but i could not find anything on bleeding the line, my oil pressure was fine, then i had to remove the guage, after screwing it back in, it reads low.

Does that line have to be bled?
Title: Re: More on low oil pressure reading...
Post by: bd on September 06, 2015, 02:54:26 pm
Mechanical gauge - the line does not need to be bled (which will provide only a temporary benefit, anyway, since the line will gradually drain).  Did you back up the gauge fitting with a second wrench as you removed/installed the line?  Or, did you inadvertently kink/pinch the line?
Title: More on low oil pressure reading...
Post by: philo_beddoe on September 06, 2015, 07:08:51 pm
I did not remove the line. Just unhooked the guage to repair the printed circut board.  I'll check for kinks, but i dont think so.  There is just one tiny fitting that screws onto the back of guage. Oil pan is full,  it drops to 10 at idle and maybe 20 driving down the road.
Title: Re: More on low oil pressure reading...
Post by: VileZambonie on September 06, 2015, 08:01:03 pm
Might be a good time to change to an electric gauge. You'd be surprised how fast one of those can pump 5 quarts of oil out of your engine and even inside your dash.
Title: Re: More on low oil pressure reading...
Post by: Dr_Snooz on September 06, 2015, 10:12:13 pm
I put a copper line on mine. It's not likely to break, but it sure is noisy.
Title: Re: More on low oil pressure reading...
Post by: philo_beddoe on September 06, 2015, 10:21:26 pm
Ok, how is an oil pressure guage noisy?
Title: Re: More on low oil pressure reading...
Post by: Dr_Snooz on September 07, 2015, 09:28:01 pm
The copper line seems to transmit engine noise in a way that the vinyl stuff doesn't. There's a noticeable chattering that comes through.
Title: More on low oil pressure reading...
Post by: blazer74 on September 07, 2015, 09:56:21 pm
Never noticed that with 35 bfg's , turbo mufflers, stereo and the top off.


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Title: Re: More on low oil pressure reading...
Post by: philo_beddoe on September 08, 2015, 06:46:51 pm
Yup!! Thats how we fixed noise problems in the old days!!  You dont want to know how we fixed the "check engine light"