Question about 2003 Pontiac Aztek

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Rebuilt engine but, no oil pressure - 2003 Pontiac Aztek

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Obvious question is did you fill it with oil to the level on the dipstick? Sometimes the simplest things are the answer. If not, check the drive to the oil pump, it is usually a bevel gear. Sometimes there is a shear pin that shears if the pump is put under too much load. The last time I stripped an engine to the oil pump was in 1975, but I bet they haven't changed much. If you are stripping that far, it is usually prudent to replace the oil pump and drive chains and belts in the rebuild considering how much work is involved to break the engine down again and the disastrous consequences when these parts fail.

Posted on May 02, 2015

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Not sure of your details but sometimes the oil pump suction tube gets
Knocked off during oil pan install

Posted on May 02, 2015

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Posted on Jan 02, 2017

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1 Answer

Why In a re-built engine, oil pressure is not building up ?


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1 Answer

Just had an engine rebuilt not getting oil pressure


you need to pre pressure a new /rebuilt engine so you get oil into all the galleries , connect an electric drill to the oil pump drive and spin for a good 3-4 minutes , connect a pressure gauge as well so you can see the pressure build up

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Why would my 2001 Sebring lxi 2.7l v6 rebuilt engine new sensors has oil light come on when stopping. why?


This is an oil PRESSURE issue, not oil level.
It is likely that when you stop, and the engine returns to idle, the oil pump is not creating enough pressure to push oil up to the top of the engine and lubricate the valve assembly.
I hate being the bearer of bad news, but the plastic impellers in most modern oil pumps do fail over time, especially if they've been disturbed by the work associated with an engine rebuild. Or, it could be that it is not sitting right on the pickup and feed tubes, and they are being blocked and causing pickup problems at low RPMs. The solution will involved dropping the pan to figure out what's going on with the pump.

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Hello people, I recently did a full service on my golf3 (changed engine oil and what-not) but my oil light keeps coming on!Solution any1


Yes, if the engine oil and filter has been changed, but the oil light keeps coming on, then there may be pressure issues within the engine for the oil pressure, that is.

Connect a gauge where the oil pressure sending unit usually goes after unscrewing the sending unit, and measure the pressure to see if it within specifications. If below, then the engine's oil pump must be rebuilt or replaced in order to have enough pressure to lubricate the inside of the engine.

Please do this before the engine gets symptoms of oil starvation.

Good luck on this repair.

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