Isuzu Trooper Owners Club UK™

darren m · Posted: Tue May 23, 2006 10:18 Post subject: another oil question

just been out on a 45 mile round trip and noticeing that my oil pressure is not getting up to normal tick over level ie around 28-30 on the dial when warm .

it starts off ok around 55--60 + when cold , but now when warm it is reading about half way between 0 and 30 mark ( approx 15-20 ) when ticking over.

i,ve just checked the oil and the level looks ok ie between the 2 dots ( cooled down , but still warm ).

the engine runs ok , sometimes a bit tappy , but plenty of power.
should i just change the oil , or is there any thing else to look out for.

the engine is the 3.1 TD model , and the oil pressure when warm and at idle is /was allways at the 30 mark.

any thoughts

thanks again .

Google · Sponsor

jonkem · Posted: Tue May 23, 2006 11:02 Post subject:

The idle pressure is nothing to worry about, but keep your eye on it anyway. 3.1s can sound a bit tappy but until it gets loud theres no real need to adjust the clearances.
Change the oil & filter every 3000. Buy a big drum of oil & get filters from Milners.
www.milneroffroad.com
_________________
1994 KZJ70 Cruiser (currently filling the garage and causing some head scratching)
1988 MKI 3.1td Hybrid Van (Ex Bobtail)
1991 SWB Fronty 2.8td Hybrid
2000 Astra Estate (work)
2006 VXR Astra
MK1 SR Nova

darren m · Posted: Tue May 23, 2006 11:41 Post subject:

when should you worry about oil pressure readings ?.

cheers

darren m · Posted: Wed May 24, 2006 10:04 Post subject:

the reason i ask is that when i bought the motor the chap said
" it as got a good oil pressure reading , thats the first thing to look for "
the engines done 194,000

whats a good pressure reading and whats not !!!!!!!!?

cheers

jonkem · Posted: Wed May 24, 2006 19:36 Post subject:

It's reasonable to be up around 80psi when cold and you will see postings on here with readings down around 15psi when hot, both figures at tickover. Someone quoted Isuzu figures a while back and they were wide open.

When I'm looking to buy an engine, I'm more interested in how quickly from start up (hot & cold) the pressure builds up & how constant it stays. For example one of mine runs at 25psi on tickover 60psi running speed and does that all day long everyday, so I consider that normal. Another never drops below 50psi and will run at 80psi when hot and I consider that normal as well Smile

I would guess the warning light is set at around 5psi so that low on tickover would give me cause for concern but not panic if it went up to 50psi when driving Smile

Just be certain to keep the oil filter changed and use the correct grade of oil at all times.
_________________
1994 KZJ70 Cruiser (currently filling the garage and causing some head scratching)
1988 MKI 3.1td Hybrid Van (Ex Bobtail)
1991 SWB Fronty 2.8td Hybrid
2000 Astra Estate (work)
2006 VXR Astra
MK1 SR Nova

markymoan · Posted: Wed May 24, 2006 19:41 Post subject:

If it was down to just an oil light, non of these oil pressure threads would be here.
I put it down to to much info for the normal driver Smile

_________________

hagar · Newbie Joined: 18 Jun 2006 Posts: 5 Location: new zealand

ok guys (and girls)
i have tracked an oil leak down to the sump pan gaskety thing (the metal lower part of the sump ) the bolts weren't tight...

the question is is there a torque setting for all those little 10mm bolts..

i have a really bad habbit of snapping bolts and stripping threads

any help is greatly appricated

cheers hagar
_________________
'93 swb irmscher bighorn 3.1tdi

frank sucevic · Posted: Mon Jun 26, 2006 19:41 Post subject: Re: sump pan

markymoan · Posted: Mon Jun 26, 2006 20:08 Post subject:

Frank is right, just dont give it that extra bit thats the snap bit Smile

_________________

Lynn Johnson · *** Joined: 19 Jul 2003 Posts: 225 Location: Aberdeenshire

wow ! inch/ pound Tq wrench hubbys say ours is in the workshop ( somewhere ) been using that new fangled newton/metre stuff for a while on the newer farm gear, then they started on Torque angle gauges. back to the long bar he says Exclamation

Lynn

hagar · Newbie Joined: 18 Jun 2006 Posts: 5 Location: new zealand

thanks for the help guys but no one actualy gave me the figures....

i would rather do it with a torque wrench as im really nervous about stripping the threads in the sump..

and it's really not cool going to a mechanic and saying "can you please tighten these widdle biddy bolts im a bit scared"
_________________
'93 swb irmscher bighorn 3.1tdi

markymoan · Posted: Mon Jun 26, 2006 23:26 Post subject:

I posted the manual for the 2.8, ive no doubt the settings are the same,
I dig the link out.
_________________

markymoan · Posted: Mon Jun 26, 2006 23:29 Post subject:

Here it is Very Happy

http://www.itocuk.co.uk/forums/viewtopic.php?t=4082
_________________