not much oil pressure

[hiace 5ltr]

started fresh 5ltr, very little oil pressure & no oil to top end, appreciate any thoughts.

[Not_An_Abba_Fan]

A problem with either the oil pump or the pick up. You should crank the engine without spark and fuel first to get your oil pressure up any way before you start it.

[greenfoam]

If it's not a new motor the pickup might be clagged up, it happens alot on the efi 5 litre

[defa]

if it is a new oil pump. sometimes they have to be primed. so a mate of mine told me. so ya might have to pull the pump off and prime it..
regarding the oil pick up. i gave a mate a pickup off a 253. they are much better than the efi ones. they are crap...

[hiace 5ltr]

thanks fellas for your reply. honed, ringed, bearings & balanced, old pump not sure how many ks on it, cranked over before starting, at one stage took oil press sender out while idling, oil just dribbled out, will check out pump and pickup regards

[pandaman]

Maybe a dumb question, but you are using a new filter right? If oil is dribbling out it doesn't sound like a prime problem, might be an idea to pull the pump and check clearances. If you have acess to nitrogen, blow some down the pickup pipe while the pump is off, (don't go overboard on the pressure though) if you can hear it bubbling through into the sump, then the pickup is probably reasonably clear. If all that checks out then you might as well prime the pump and try again. Two methods of priming, put the pump on and backfill it with oil through the pressure sender hole. Or pack the gears with a light grease or vasoline. Then the manual says to crank it with the coil lead off (plugs out can help significantly as the starter isn't working against compression then) until you get some pressure up. This didn't work awfully well for me, but when started it got OP up within a couple of seconds. Some pumps are just more stubborn than others, hopefully yours will behave itself.

[V8 Berlina]

Try a couple of can of nulon oil flush. Go to Repco and see if they will sell you the trade stuff.
See if that cleans the **** out of the pick up. Worth a try.

[immortality]

definitly prime the pump with vaseline. also fill the new filter with oil before fitting it(this takes a little while, you need to fill it and then let it settle and then fill it some more etc). i once had a similar problem after an oil change on a 308. ended up stripping the engine and never found anything wrong. all we did was a freshen up etc, new gaskets and filter and it ran fine. suspect we may have had a dodgy oil filter

[hiace 5ltr]

thanks again fellas, in the process of dropping sump, i assembled engine 10 yrs ago just starting to get into it again i hate having to do things twice, maybe i was a little slack priming the pump, never had probs like this on other engines thanks for your input i will let you know the outcome. regards

[samuels]

thanks fellas for your reply. honed, ringed, bearings & balanced, old pump not sure how many ks on it, cranked over before starting, at one stage took oil press sender out while idling, oil just dribbled out, will check out pump and pickup regards

not taking the mickey out of you,but you should of checked oil pump while dis-assembled,clearances,etc,etc,same as pick up,when putting new bearings in always pays to acid bath crank,and engine for that matter,cleans all oil drillings and gallerys,always prime pump and fill oil filter up (at least 1/2 fill it-oil filter) before firing engine up.you may well just have a dicky oil pressure switch,have you put an oil pressure tester on it?
your problem, sounds to me,as though it is your pump,maybe pick up line.
what oil are you using?

[hiace 5ltr]

samuels thanks, didn't dismantle pump at the time, sometimes best left alone? major rebuild 350 chev crate motor, checked pump on that it was fine never had an oil press prob, not as temprementle as the holdens, ive been using xld premium 20w-50 for over 20 yrs dose'nt burn or leave sludge like some of the others. the problem is i did this 10 yrs ago so thats why im rechecking, can't remember allot that long ago. regards

[samuels]

samuels thanks, didn't dismantle pump at the time, sometimes best left alone? major rebuild 350 chev crate motor, checked pump on that it was fine never had an oil press prob, not as temprementle as the holdens, ive been using xld premium 20w-50 for over 20 yrs dose'nt burn or leave sludge like some of the others. the problem is i did this 10 yrs ago so thats why im rechecking, can't remember allot that long ago. regards

Hmmm maybe so,but when reconditioning any motor,even if it is just,rings,bearings,it always pays to just go that couple of steps further,the oil pump is always something that should be looked at,regardless of oil brand 20w-50 is good,recommended oil for a new engine is 15w-40,so this would apply, if you have bored,honed,new pistons/rings,crankshaft work,
personally i'd be checking the relief valve in the oil pump...heres another dumb question,you have the right clearanced bearings in?

[hiace 5ltr]

took sump & oil pickup off, pickup clean & clear, i didn't think i was that slack, but worth checking. oil is getting to big ends , cam & mains but not squirting out of push rods to top end. took cover off pump all appears ok. have to wait for pump cover gasket to get it together i'm out in the country 100ks from major towns so things can happen pretty slow. haven't touched engine for 10 yrs had ryco oil filter screwed on to stop dust and crap but not filled with oil will ring ryco & ask if filter can collapse left dry for yrs?

[samuels]

took sump & oil pickup off, pickup clean & clear, i didn't think i was that slack, but worth checking. oil is getting to big ends , cam & mains but not squirting out of push rods to top end. took cover off pump all appears ok. have to wait for pump cover gasket to get it together i'm out in the country 100ks from major towns so things can happen pretty slow. haven't touched engine for 10 yrs had ryco oil filter screwed on to stop dust and crap but not filled with oil will ring ryco & ask if filter can collapse left dry for yrs?

sounds like you need to soak your push rods in kero or petrol for awhile....
did you use feeler gauges to check gaps,etc,in your oil pump

[pandaman]

took sump & oil pickup off, pickup clean & clear, i didn't think i was that slack, but worth checking. oil is getting to big ends , cam & mains but not squirting out of push rods to top end. took cover off pump all appears ok. have to wait for pump cover gasket to get it together i'm out in the country 100ks from major towns so things can happen pretty slow. haven't touched engine for 10 yrs had ryco oil filter screwed on to stop dust and crap but not filled with oil will ring ryco & ask if filter can collapse left dry for yrs?

woah, dude, new filter definitely a good idea. Very cheap peace of mind. When you say the pump looked ok, did you actually check the gear protrusion?

[pandaman]

sounds like you need to soak your push rods in kero or petrol for awhile....

Blocked pushrods are a possibility, but he said earlier that he was getting bugger all oil coming out of the pressure sender tap on the pump. That would indicate that the problem is upstream of the tap. (barring a major failure somewhere downstream that's dumping a ****load of pressure) So the main candidates are blocked pickup (eliminated), filter and the pump itself (possibly eliminated). If each of those is found to be ok and he's still getting bugger all oil at the pressure sender tap, I'll be most surprised.

[samuels]

Blocked pushrods are a possibility, but he said earlier that he was getting bugger all oil coming out of the pressure sender tap on the pump. That would indicate that the problem is upstream of the tap. (barring a major failure somewhere downstream that's dumping a ****load of pressure) So the main candidates are blocked pickup (eliminated), filter and the pump itself (possibly eliminated). If each of those is found to be ok and he's still getting bugger all oil at the pressure sender tap, I'll be most surprised.

i know...but read what he said,for me to say what i said...

[hiace 5ltr]

hi fellas info overload for me, (appreciated), did check pump clearances, are within tighter specs, spoke to engineer at ryco filter should be ok, got pump cover gasket & new valv oil filter, v02 recommend vn v8, v028 recommend for vp v8 spoke to valv shouldn't be any concern vo2 is a big bulky filter, v028 1/2 the size. i did have the smaller one on it vp, bought both, not sure whether i have the room for the bigger one yet, haven't got it back together yet, been a bit busy. regards

[samuels]

hi fellas info overload for me, (appreciated), did check pump clearances, are within tighter specs, spoke to engineer at ryco filter should be ok, got pump cover gasket & new valv oil filter, v02 recommend vn v8, v028 recommend for vp v8 spoke to valv shouldn't be any concern vo2 is a big bulky filter, v028 1/2 the size. i did have the smaller one on it vp, bought both, not sure whether i have the room for the bigger one yet, haven't got it back together yet, been a bit busy. regards

all the best with it then,let us now how you went
i'd be very interested in knowing what it was.
i'd be soaking them pushrods for a day,if they aren't getting oil out up to the valve train.

[pandaman]

all the best with it then,let us now how you went
i'd be very interested in knowing what it was.
i'd be soaking them pushrods for a day,if they aren't getting oil out up to the valve train.

Ditto to that. If you do end up soaking the pushrods, make sure you check em by blowing through them. Or alternatively you could be sensible and just make sure you can see light through them. That's the pussy way of doing it though.

[hiace 5ltr]

gday fellas just an update, put oil press gauge on, vaso in gears, a bit of oil in pump, pulled plugs out, wound engine over with filter off! still no pickup, put plugs back in, filter still off, fired up & oil picked up, but flowed not squirt oil everywhere stopped put filter on took out sender started again, oil flowed not squirted. no oil press reading on gauge.
waiting for new pump to arrive, i think problem somewhere in pump, an engine with totally stuffed bearings would have a bit of oil press when cold? regards

[Not_An_Abba_Fan]

It would, but it would also rattle like a bastard.

[hiace 5ltr]

gday fellas! got new oil pump, primed, put on (a bugger in hiace have to support engine & drop x member) same problem, how much do you have to prime these things? could i have left a gallery plug out which may have been taken out at time of machining? i haven't got a decent exploded diagram of all components in engine block only have factory w/s manual, dosen't give you basic stuff regards

[hiace 5ltr]

update, pulled front off engine, oil gallery plug missing out of lower gallery, very hard to see behind oil pump drive gear, it was getting enough oil flow to pump lifters up and a bit to bottom end but no pressure, in the process of reassembly, thanks for all the imput fellas. regards

[samuels]

update, pulled front off engine, oil gallery plug missing out of lower gallery, very hard to see behind oil pump drive gear, it was getting enough oil flow to pump lifters up and a bit to bottom end but no pressure, in the process of reassembly, thanks for all the imput fellas. regards

so it was what you said then ?? you did say could it be a plug in the gallery didn't you? sorry still got those sleepy eyes, ,easier at the mo to ask rather than read a heap of posts...