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oil light on at idle?

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wiseoldub Fahrvergnugen

925 posts · joined Sep 2002 ·

#793968
After a bit of a slog in the 2 ltr, I have started to see the oil light on the dash come on when I slow down to idle. After checking everything, it seems strange that it has come on. oil is high in the sump, valve clearances are good, temp is ok, so i would have thought that oil pressure would be fine! there are no leaks, and the engine purrs! where am I not looking? What am I missing?
All your advice is great! cheers, josh

vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 ·

#793970
faulty oil pressure switch could be the problem.

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

Joel Now containing 100\% E-Wang

9,368 posts · joined Feb 2006 ·

#793971
Josh, do you know what grade oil is in it?

its not uncommon to get a dim flashy oil light at idle on a hot engine thats got a few KM under its belt if the oils abit too thin or needs changing

vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 ·

#793977
needs the right oil.
nothing will do except ACE 30. All other oils thin out coz of too much additives which are suitable only for water pumpers.

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

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#793987
Even ACE 40 if it has pressure issues due to high wear.

How old is the engine and how well was it last rebuilt?????

Could also pull the oil pump and blue print, may help, but problem could be bearing oil clearances, cam follower oil clearances, oil pressure relief issues....to name a few.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

71-BEETLE-SEDAN AKA Josh

1,058 posts · joined Mar 2009 ·

#793988
Just check you have to right bulb in the right spot.

A while back i thought my oil light kept comin on when slowing down to a stop but then i worked out that i actually had the gen/alt light bulb in the wrong hole.

wiseoldub Fahrvergnugen

925 posts · joined Sep 2002 ·

#794007
cheers guys! very good advice ! oil is fresh! changed it to a penrite oil the day before valla! hpr 15 i think?
will have a look at all the other stuff too! cheers

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#794030
wiseoldub wrote:After a bit of a slog in the 2 ltr, I have started to see the oil light on the dash come on when I slow down to idle. After checking everything, it seems strange that it has come on. oil is high in the sump, valve clearances are good, temp is ok, so i would have thought that oil pressure would be fine! there are no leaks, and the engine purrs! where am I not looking? What am I missing?
All your advice is great! cheers, josh

Hi
what is Your idle speed??

increasing the idle speed will increase the oil pressure..

maybe the oil pressure is too low for the engine...

LEE

- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#794032
wiseoldub wrote:cheers guys! very good advice ! oil is fresh! changed it to a penrite oil the day before valla! hpr 15 i think?
will have a look at all the other stuff too! cheers
HPR 15
what grade oil is that? 40 50 grade ??

LEE
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---