oil pressure problems

bugzla Custom Title Time!

1,164 posts · joined Jun 2007 · 24 Nov 2013, 7:25 pm

#976045

hey guys got something weird happening my oils pressure last week went through the roof then today has dropped on the guage now this is the weird thing when it goes from 20 to 25 for a slight second on a flicker on the guage the idle drops a little as if the engine comes under load

any body got a clue what might be the problem

cheers
stevo

psimitar Son of Jim - Creator of Good

2,506 posts · joined Jan 2009 · 24 Nov 2013, 7:49 pm

#976050

Sticking relief valve maybe?

madness is in the eye of the beholder 👍

bugzla Custom Title Time!

1,164 posts · joined Jun 2007 · 24 Nov 2013, 8:50 pm

#976062

hmm thought that as well but it just fell out when I undid the screw

bugzla Custom Title Time!

1,164 posts · joined Jun 2007 · 24 Nov 2013, 9:07 pm

#976065

plus the oil temp dropped as well

vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 · 24 Nov 2013, 9:29 pm

#976069

double check with a different gauge, mechanical one directly on the engine.

71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE

bugzla Custom Title Time!

1,164 posts · joined Jun 2007 · 24 Nov 2013, 10:47 pm

#976073

was going to buy another gauge tomorrow and see what happens

bugzla Custom Title Time!

1,164 posts · joined Jun 2007 · 25 Nov 2013, 8:43 pm

#976176

okay I opted not to buy the gauge only because of the rpm difference when it rises 5 psi the motor loads which cant be gauge problems weird as if it keeps up tomorrow ill have to buy the gauge

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 · 25 Nov 2013, 9:04 pm

#976178

Yeah, try a mechanical gauge to confirm. Maybe it's electrical???

Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 · 25 Nov 2013, 9:18 pm

#976179

nearly always is.

71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 · 25 Nov 2013, 9:19 pm

#976180

maybe a bearing problem, causing it to block an oil gallery (or close up the tolerances) and increase the pressure............the engine load is it trying to seize. Hopefully I'm wrong though !😂

bugzla Custom Title Time!

1,164 posts · joined Jun 2007 · 25 Nov 2013, 9:31 pm

#976184

im thinking you might be right craig ill start it up tomorrow and see how I go ill hook up a gauge if it keeps going that way but I think craig might be on top of it 🙁

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 · 25 Nov 2013, 10:08 pm

#976186

Craig Torrens wrote:maybe a bearing problem, causing it to block an oil gallery (or close up the tolerances) and increase the pressure............the engine load is it trying to seize. Hopefully I'm wrong though !😂

yeah.... or that.

Also but unlikely is the shaft intermittantly spinning in the oil pump gear, the rpm drop is an odd one, is it very many rpm?

Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

bugzla Custom Title Time!

1,164 posts · joined Jun 2007 · 26 Nov 2013, 2:55 am

#976195

with out having a tach on board around 100-250 rpm, wow the oil pump I thought if it was buggered it was buggered never heard of them spinning on the shafts but when you think of it, it's possible just filled it full of oil doh ill check it as well when I have the time thanks guys for your help.