fluctuating oil pressure? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Hubscrub · 03-29-2011, 10:05 PM

he was last on at 7-27-09

treveiger · 03-29-2011, 10:31 PM

I guess maybe not

tranz am · 03-29-2011, 11:18 PM

I was just digging through my subscriptions and figured id ask even though this was a while ago. lol
probably should have sent him a pm instead.

ItsRandy · 03-30-2011, 12:37 AM

As far as your oil leak goes, there is a bolt hole, in the front, on the pass side of the motor that is through to the fuel pump push rod galley area. If that hole doesn't have a short bolt (a real short bolt 1/2 inch long) with sealer on the threads oil will come out of the hole. If when you are changing your fuel pump put a longer bolt in that same hole and it will push against the fuel pump push rod and hold it in place while you change the pump.
As far as your bouncing oil pressure gauge goes...maybe you have a bad by-pass spring in your pump that is effected by the hot oil and is fluttering and opening to full by-pass when the rpms go up, or, a bad by-pass spring in your oil filter adapter that is fluttering and opening to full by-pass when the rpms go up, or, you are sucking air because your oil pick up has fallen off and is in the bottom of your oil pan.

03-29-2011, 10:05 PM	#26
Hubscrub Cruzin Join Date: Dec 2009 Location: on the road Posts: 2,835	Re: fluctuating oil pressure? he was last on at 7-27-09 __________________ Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14

03-29-2011, 10:31 PM	#27
treveiger Senior Member Join Date: Jul 2010 Location: South Dakota Posts: 4,093	Re: fluctuating oil pressure? I guess maybe not __________________ 1969 Chevy c20(Miss Hackjob)

03-29-2011, 11:18 PM	#28
tranz am Registered User Join Date: Apr 2007 Location: Santa Rosa, Ca Posts: 586	Re: fluctuating oil pressure? I was just digging through my subscriptions and figured id ask even though this was a while ago. lol probably should have sent him a pm instead. __________________ My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=456220 Best 1/4 mile time 12.1 @ 111 w/traction issues 1969 GMC SWB 1964 chevy II Nova ht Last edited by tranz am; 03-29-2011 at 11:36 PM.

03-30-2011, 12:37 AM	#29
ItsRandy Registered User Join Date: Nov 2010 Location: Grand Terrace, Ca. Posts: 1,607	Re: fluctuating oil pressure? As far as your oil leak goes, there is a bolt hole, in the front, on the pass side of the motor that is through to the fuel pump push rod galley area. If that hole doesn't have a short bolt (a real short bolt 1/2 inch long) with sealer on the threads oil will come out of the hole. If when you are changing your fuel pump put a longer bolt in that same hole and it will push against the fuel pump push rod and hold it in place while you change the pump. As far as your bouncing oil pressure gauge goes...maybe you have a bad by-pass spring in your pump that is effected by the hot oil and is fluttering and opening to full by-pass when the rpms go up, or, a bad by-pass spring in your oil filter adapter that is fluttering and opening to full by-pass when the rpms go up, or, you are sucking air because your oil pick up has fallen off and is in the bottom of your oil pan.



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