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Old 07-08-2013, 01:53 PM   #4826
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Quote:
Originally Posted by zebra View Post
how many times have you put on new intake gaskets now? you sure the blower manifold is flat?
not trying to dump a 5th of rum in your punch, but it seems like it's been a few times now that something's seemed better from putting on a new set
Only a few. Found two bolts on the blower that were totally loose.

I can't be sure but I'd think it would have been caught in the dyno tune.
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Old 07-08-2013, 02:11 PM   #4827
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How much oil did you loose before you caught the leak/low pressure?

What else changed? Just the gauge?

Hope it's not bearings :fingerscrossed:

Pull the filter and cut it open to look for carnage.
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Old 07-08-2013, 02:26 PM   #4828
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Quote:
Originally Posted by Redemption View Post
How much oil did you loose before you caught the leak/low pressure?

What else changed? Just the gauge?

Hope it's not bearings :fingerscrossed:

Pull the filter and cut it open to look for carnage.
haha, Funny. I was about to cut the filter and came inside to get a drink.

Lost zero oil. Nothing else changed.

Mechanical gauge and cabin (four pack) gauge.

I'd be shocked if it were the bearings. Happened WAY too fast for that. One day it was fine, the next it was way low oil pressure.
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Old 07-08-2013, 02:56 PM   #4829
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Hmmm..... Hmmmmmmmm.... Well bearings can just "go", but doubtful.

Most likely pressure relief valve sticking in the pump. Had that happen in my truck. Brand new pump too.

If you change the pump, go through the new one and polish/debur the relief piston. Just takes 1 piece of trash to jam that thing open, dumping pressure.

I wouldn't run it anymore, if it were my car. But change the oil/filter and give it a whirl, just cause. Maybe a sea foam treatment too. Thinking out loud.


Does this new gauge get its readings from the same place as the 4 pack?
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Old 07-08-2013, 03:31 PM   #4830
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I'd have that old oil tested as well... you'll be amazed how much it can tell about your motors health.

Old school fuel pressure gauge... love it
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Old 07-08-2013, 03:34 PM   #4831
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Quote:
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Does this new gauge get its readings from the same place as the 4 pack?
It looks like it is, one photo showed the new extension with the gauge, and sensor relocated.

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Old 07-08-2013, 03:37 PM   #4832
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Ok, so I'm freaking out. Ugh............. Not enough to clog the oil but sure looks ugly. The brand new oil and new filter I put on last night made no difference.

So what say you guys.

Oh, the last picture is to show you how the filter can turn. I turned it 180 degrees before I cut the paper filter since I used a dremel to cut the casing open. So this is not shavings from that.


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Old 07-08-2013, 07:24 PM   #4833
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Any shiny stuff in the oil or filter? anything magnetic?
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Old 07-08-2013, 07:32 PM   #4834
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Quote:
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Scary part is when it's cooled down and freshly started the pressure hold steady and drops slowly as it heats up.

But that starting pressure is only 30 psi.
That sounds like a crack to me, metal expanding when it gets warm and leaking more than when it is cold.
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Old 07-08-2013, 09:46 PM   #4835
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Quote:
Originally Posted by Redemption View Post
Any shiny stuff in the oil or filter? anything magnetic?
Only what you see in the pics. And it is magnetic.

Quote:
Originally Posted by techinny View Post
That sounds like a crack to me, metal expanding when it gets warm and leaking more than when it is cold.
Crack in the oil pump?
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Old 07-09-2013, 09:54 AM   #4836
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That's no beuno. No matter what it is, gonna need to get that shit out of the engine, completely.
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Old 07-09-2013, 10:48 AM   #4837
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DANG PQ, I haven't read through this build thread for a while. This idle issue has been plaguing you for a while. After I went the FI route on my old 5th gen and had nothing but issues I decided to get a factory warranted FI 5th gen
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Old 07-09-2013, 11:11 AM   #4838
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Quote:
Originally Posted by Redemption View Post
That's no beuno. No matter what it is, gonna need to get that shit out of the engine, completely.
I agree but the oil pump goes straight to the fuel filter. Those shavings can't get past the filter. So I should be ok swaping the pump. At least in theory right?

Only place they could be is in the filter or the tube that feeds it directly.

Quote:
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DANG PQ, I haven't read through this build thread for a while. This idle issue has been plaguing you for a while. After I went the FI route on my old 5th gen and had nothing but issues I decided to get a factory warranted FI 5th gen
Damn. Nicely done. And a pulley and tune will make it faster than ours anyway.
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Old 07-09-2013, 11:30 AM   #4839
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I'm not familiar with the plumbing of the lubrication system on our cars, but usually the oil comes out of the oil pump, lubricates the components, goes through the filter, then back to sump. The oil usually is pulled out of the oil pan through a screen by the oil pump.

Again, I am only going by my experience with what I work on.
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Old 07-09-2013, 11:39 AM   #4840
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Quote:
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I agree but the oil pump goes straight to the fuel filter. Those shavings can't get past the filter. So I should be ok swaping the pump. At least in theory right?

Only place they could be is in the filter or the tube that feeds it directly.

Damn. Nicely done. And a pulley and tune will make it faster than ours anyway.

IF its the pump, in theory, yes I believe that is correct. Still makes me nervous.
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Old 07-09-2013, 12:16 PM   #4841
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Quote:
Originally Posted by techinny View Post
I'm not familiar with the plumbing of the lubrication system on our cars, but usually the oil comes out of the oil pump, lubricates the components, goes through the filter, then back to sump. The oil usually is pulled out of the oil pan through a screen by the oil pump.

Again, I am only going by my experience with what I work on.
I looked up the flow diagram last week and it goes in the order; Pick Up Tube/Pump/Sensor/Components

I'll try and find a diagram.

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IF its the pump, in theory, yes I believe that is correct. Still makes me nervous.
Oh, the whole thing makes me nervous.
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Old 07-09-2013, 12:17 PM   #4842
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Old 07-09-2013, 12:29 PM   #4843
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Humm, by looking at that it could be metal from the pump if there was not any in the pan. I would say when you drop the pan try to wipe some of it out and see if you have any metal slivers in there.
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Old 07-09-2013, 12:33 PM   #4844
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So another thing to check, if its reachable with the blower....

The restrictor that's just above the filter, in your diagram. It's accessed by a plug in the back of the block. Could be bad/plugged. Doesn't explain the metal in the filter, but could be causing the low pressure.
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Old 07-09-2013, 12:34 PM   #4845
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Quote:
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Humm, by looking at that it could be metal from the pump if there was not any in the pan. I would say when you drop the pan try to wipe some of it out and see if you have any metal slivers in there.
I'll run a magnet all the way down inside. I have one that works great for that.

Dropping the pan all the way is a pain in the ass. Gotta lower the tranny if I"m not mistaken.
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Old 07-09-2013, 01:38 PM   #4846
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Are you at 100,000 miles yet? The motor could just be gone since it has had Forced induction on it for a while and was not built for it.
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Old 07-09-2013, 02:46 PM   #4847
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Are you at 100,000 miles yet? The motor could just be gone since it has had Forced induction on it for a while and was not built for it.
not at his boost levels... He's only ran it at the track a handful of times... mostly freeway driving, even if it's spirited...

I'm not saying it's not possible that the engine let go, but there are so many cars with his boost level and higher on the stock bottom end that I'm betting against a blown motor/block
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Old 07-09-2013, 03:30 PM   #4848
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LS engines are pretty tough. What boost levels is he running?

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Old 07-09-2013, 04:27 PM   #4849
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I started my pickup this morning and the oil pressure was at zero... What the heck, dude???

Are the pan plugs magnetic?

Did you see anything on the plug when you changed the oil?

I wouldn't freak out too much till I got a sample off the bottom of the pan..... I guess you didn't take an oil sample.

Where did the two quarts go?


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Old 07-09-2013, 04:42 PM   #4850
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Quote:
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LS engines are pretty tough. What boost levels is he running?

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7.5 pounds.

Quote:
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I started my pickup this morning and the oil pressure was at zero... What the heck, dude???

Are the pan plugs magnetic?

Did you see anything on the plug when you changed the oil?

I wouldn't freak out too much till I got a sample off the bottom of the pan..... I guess you didn't take an oil sample.

Where did the two quarts go?


No magnetic plugs. No metal in the oil. Strained it through a towel. Did not save a sample before I poured it into my bucket of old oil and lube.

The two quarts went all over my blower and engine bay. haha

I may have blown a bearing because I forgot about the big knocking that it did just after I started it the other day after sitting. Was not ticking or clatter but knocking. Only for a second or so. Bout 3 or 4 good knocks.

I figured it was something loose in the engine bay and the car bucking from not being started for two weeks. Plus the sensor having been taken out yada yada.

I'll find out this weekend. Keeping a possitive train of thought. Not even worried about it.

OMG, OMG, OMG, ...................... Shit. I hope I hope.
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