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OIL LIGHT

I have a LJ TORANA 173 engine i recently just done it up ETC head,carby,exhaust now the problem is that after a while driving it the oil light comes on??? why is this i check the oil level and its fine>>>>> anyone know?

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I am guessing that the oil light probably comes on after some sort of highway driving at sort of higher revs... This heats the oil and makes it thinner, therfor if you have say a worn oil pump (Take off the backing plate and look for rings worn into it) it can not keep up the oil pressure and may even aireate the oil (make it frothy).

U will find that the problem will go away if you stop the engine for 10 mins then the light will come back on after more driving.

the other thing it there is a pressur relief valve on the front of the oil pump. pull that out and give it a good clean, sandpaper any rust and crap off it and put it back in (it is behind a large nut hard to see because of the engine mount. the valve inside is just a spring with a piston on the end)This valve when it heats up may get stuck open and not regulate the pressure properly....

Enjoy

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Dean Cropp
Sydney, Australia
76 Bedford CF Short, Holden 3.3L Black EFI (VK)
Long Shift Trimatic, Tall 2.6 Holden Diff, DiscBrake Front
Mariineboy@optushome...

HEY im a member now :) yeah i drove for a while and the oil light came on and me friend said just go abit faster and it should fade away... so i did and it did go away i was surprised but do u still think i have an oil problem or what>>> now im confused!!

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if it helps you any i had a similar problem on my 73 LJ Torana. in the end replacing the oil pressure switch fixed my problem, so if you want you can try replacing that first, the oil pressure switch only costs between $5 and $20 i think.. can remember cause i replaced mine ages ago

and no trouble since :)'

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Theres nothing quite like a Holden Red 6

Yes this sounds very familiar... this is the same problem I had with the engine in my bedford except it got to the point where I could hear the tappets maken a horid noise because of the low oil pressure....

Can I RECOMEND that you loose the oil warning sensor and light all together and install an OIL PRESSURE GAUGE (there cheap $25 and up for better looking ones) this will tell you alot more about what the oil pressure is doing.. this will then tell you if your oil pressure is too low and if you need to replace the oil pump (I reckon that is whats wrong).

If if is the Oil Pump that is worn then your normal oil pressure at idle will be about 25 but after driving for a wile (Oil pressure is about 40ish normaly at revs above 1500) and the oil has heated up, when you pull over and the engine drops back to idle the pressure will fall below 25 to say 10 or 8 or lower if it is real bad.

If the oil pressure gets this low than U need a new Pump bad... dont wory there cheap..

Good luck..'

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Dean Cropp
Sydney, Australia
76 Bedford CF Short, Holden 3.3L Black EFI (VK)
Long Shift Trimatic, Tall 2.6 Holden Diff, DiscBrake Front
Mariineboy@optushome...

Yup you may have a problem if you keep driving like it is. The oil warning light comes on when pressure falls below an acceptable limit. I think it is about 6-8psi.

If you increase the load on the engine in such conditions it WILL die a horrible death!

First check is to make sure the wire is correctly fixed to the switch and not leaning against something metal. Yup many a panic happens if the wire comes loose and shorts. Next if that is on ok, remove the oil sender and replace it with another. DO NOT use teflon tape! Its a taper fit and will self seal. If the original sender is faulty this will isolate the problem and hopefully you'll not need to do anything else.

If the problem persists you can assume there is a serious problem causing low oil pressure and you better not continue running the engine or you will damage it.

Providing the oil level is correct and not too low or too high, I'd suggest fitting a replacement oil pump. If the original pump is faulty it could be a risk trying to half repair it. Note that the pump is difficult to work on unless you remove the engine mount bracket. If you do choose to try repairing your existing one, it is important to put it back together the same as it came apart. Tolerences are tight between the housing, the cover and the gears and incorrect reassembly will often cause low pressure problems.

I'd steer clear of trying to alter the relief valve spring pressure. A gain in pressure is not needed in a Holden six, but an increase in volume is useful if you have an increased volume sump. Another good thing to keep it running smoothly is to use a thermostaticly controlled oil cooler kit. That will keep the water temp down too. Remember that the oil is the medium to initially transfer the heat. '

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Hi, I have a reco 179 that is still running in. It developed some tappet noise and a slight shudder on acceleration. Is this common? If so can you tell me how do I fix this? Thanks!

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