Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: amigov6 on 10 September 2008, 21:12:56
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How do i check this please? Also should the pump need replacing what's involved? (Sorry 3.0 V6)
Cheers Guy. :y
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oil pump is a sh!ter on the V6, easier to replace the engine.
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Cheers. Let's hope it's not that then...don't think it is but was told to check oil pressure before doing anything else. Can any garage check the pressure?
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what was the reasons behind checking the pressure?
Does the oil light flicker?
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One noisy tappet slider when cold, soon quietens down. When warm on tickover the top end is a little "clattery" or loose sounding. Still pulls like the proverbial train, no smoke & never misses a beat but as an example my green 2.5 is way quieter hot or cold so i suspect some routine wear & tear top end work would benefit the car, as NOTHING else is needed. Just after some advice please.
I would like to make clear that Broocie told me this prior to sale so has in no way mislead me, just me choosing to make her perfect as she's a "keeper" & i'm a car tart!!!! 8-)
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To accurately measure the pressure you will need to connect a manual pressure gauge to the oil gallery somewhere. A favourite way to do this would be to temporarily remove the oil pressure light switch (front driver's side of the block, down low) and screw the gauge in using an adaptor as necessary. Most good garages should be able to do this.
Check it with a hot engine. Typical values (no experience of a V6) would be at least 3 BAR or so hot at 2500 RPM dropping at a hot idle to perhaps as low as 1.5 - 2 BAR. As I say, though, these are typical values and I've never checked it on a GM V6.
If the pressure is low, it'd be worth checking the pressure relief and safety valves, which should be accessible with the pump on the engine. Also, worth checking the pickup strainer within the sump is clear.
I believe there are more than one type of oil pump on the V6, and more than one style of lifter and T vent which must correspond with the oil pump. Worth checking that they are correct if the engine's ever had new heads.
If the oil pressure looks OK it might be worthwhile taking the lifters out and cleaning them.
Kevin
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I have a few gauges that may do the job, not sure if an adaptor is needed though. I live in Cleethorpes, feel free to PM me.
::)