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Username Post: max oil pressure on 5.7 vortec        (Topic#351458)
max45 
Poster
Posts: 6

Reg: 06-07-18
06-07-18 08:33 AM - Post#2736223    

I had an oil filter seal failure that caused engine damage. The manager from the oil change business came to house, changed filter and put oil in, he said it looked like a filter issue. Pics and filter sent to filter company. The filter company said that the oil pressure regulating system failed and that the oil press went over 200 psi and caused failure. Is this possible, 1999 Tahoe with 5.7 vortec.




 
Shepherd 
Frequent Contributor
Posts: 1371

Loc: Lake George, NY
Reg: 11-11-15
06-07-18 08:50 AM - Post#2736225    
    In response to max45

Welcome to CT. In my opinion, no. Most common issue is the old filter seal sticks to the housing and this creates a double seal issue, this will cause a catastrophic leak. Was the filter blown open? If so it was either defective or excess pressure caused it to rupture. You need an independent expert to look into this matter.



 
max45 
Poster
Posts: 6

Reg: 06-07-18
06-07-18 09:09 AM - Post#2736227    
    In response to Shepherd

It wasn't a double seal issue, and replacing the engine is going to cost around 5 thousand as it is. The truck is in great shape otherwise, so it's worth saving. If I can find out the max pressure it will help to figure out what failed. If engine related I'll have to cover cost, if filter related, might be able to recover some of the cost.



 
beagrizzly 
"9th Year" Gold Supporting Member
Posts: 1864
beagrizzly
Age: 68
Loc: south texas
Reg: 08-04-12
06-07-18 09:41 AM - Post#2736229    
    In response to max45

Max45,
The oil pump could actually put up that much pressure.....theoretically.
That issue aside, let me address the replacement cost you mentioned.

If you are going to have to pay for it, I would recommend a "working take out". You can buy them all day for $1000. Get it from a reputable salvage yard, and most have a 30 day guarantee.
I bought a 5.3 with 75,000 miles on it for $1200, shipped to my door. It is still running great.

If you don't have the time/skill set/ equipment to swap the engine, and local shop should be able to do that for less than $1000. You'd be all in for less than half of what you quoted.

After all, this website is all about doing stuff ourselves, right?

Good luck with getting ANY of your costs taken care of by someone else. They will ALWAYS be able to blame it on the other guy. You'd probably have to take it to small claims court at the least.

Someone on here will be able to step you through the process of swapping your engine. If you have basic hand tools, and a little knowledge, you're good to go.

Even if you have to invest in a couple of jack stands, and an engine lift you're still ahead of the game.

Griff

if you're gonna be a bear..................

1960 Biscayne (the 6T)
2005 Yukon XL
2007 GMC Sierra Classic 8.1
2009 Silverado
2011 Escalade ESV


 
2plus2 
Member
Posts: 1147

Loc: Mission,BC
Reg: 02-03-05
06-07-18 09:49 AM - Post#2736231    
    In response to beagrizzly

Is the engine blown now?
How long did you drive it with the oil pressure gauge at zero and the check gauge light on?


69 Canadian Pontiac 2+2
factory L48 350 Chev,TH350,PW,PT
99 Silverado RCLB 4.8 NV4500 14BSF 4.10's locker 6" Procomp 35 bfg m/t's 9k winch cutout flares
07 Town Car Loaded,Tinted,Getting Bagged


 
max45 
Poster
Posts: 6

Reg: 06-07-18
06-07-18 10:35 AM - Post#2736237    
    In response to 2plus2

Truck at local shop, quote is for rebuilt jasper block with 3yr warranty or 100,000 mile and parts. Engine is blown, might look at used engine for less, but taking a chance on engine life there.



 
Tri5man 
Valued Contributor
Posts: 3639
Tri5man
Loc: Possums Crotch, KY
Reg: 06-26-07
06-07-18 01:52 PM - Post#2736257    
    In response to max45

Sounds like a BS story to me. How can anyone prove the pressure went to 200#?



 
max45 
Poster
Posts: 6

Reg: 06-07-18
06-07-18 05:06 PM - Post#2736268    
    In response to Tri5man

The filter company pressure tests, and it's hard to prove either way without probably tearing oil pump out and having a certified mech examine it.



 
max45 
Poster
Posts: 6

Reg: 06-07-18
06-07-18 05:15 PM - Post#2736270    
    In response to max45

I have the letter from champ filters. They say - If the oil pressure-regulating system fails, most engine oil pumps are capable of creating pressures that will approach or even exceed 300 PSI. I would think that might blow a line or the filter clean off, in other words they are saying can't be our filter.



 
Shepherd 
Frequent Contributor
Posts: 1371

Loc: Lake George, NY
Reg: 11-11-15
06-07-18 06:12 PM - Post#2736273    
    In response to max45

If that pump was in a closed system it is possible it could reach those levels, but an engine is not a closed system. you have built in leakage thru the bearings, the valve train and any internal lubricating function. This leakage would never allow the pump to reach those extreme levels.



 
max45 
Poster
Posts: 6

Reg: 06-07-18
06-07-18 06:18 PM - Post#2736274    
    In response to Shepherd

They also stated that pressure greater than 200 PSI occurred from a visual inspection of the filter.



 
Old Buzzard 
Contributor
Posts: 411

Loc: Madison, GA.
Reg: 10-13-07
06-10-18 05:51 AM - Post#2736488    
    In response to max45

"champ filters."...Never heard of them, and I've been in the game for over 60 yrs. Have had/raced many of the Vortec/LS engines, and have never had that issue.
The engine was running, the relief was operating at it's normal setting, controlling psi.
If the reg spring broke, the relief did NOT close, and blow the system open.
An inspection of the oil pump is necessary.

Did you get the filter back?
Those oil change joints buy those crap filters by the case, for very cheap. Not something I'd put on any engine.
Get one of their filters, cut it open. Then get a quality filter, {Wix comes to mind}, and do the same. I'm betting the comparo will scare you.
Items like a cheap bypass, paper end caps, thin wall can, etc. IF the system went to 200psi, the filter media would be crushed/distorted.
https://www.bobistheoilguy.com/forums/ubbthreads.p...
Pics of the filter?

Chuck
Hotrodding and dragracing since 1955..
Injector inspector, and certifiable EFI nut.
Back to 55, again, for the 6th time.


 
454cid 
Valued Contributor
Posts: 2921

Age: 45
Loc: West Michigan
Reg: 02-18-12
06-10-18 06:44 AM - Post#2736492    
    In response to Old Buzzard

  • Old Buzzard Said:
"champ filters."...Never heard of them...



That would be Champion Labs, who makes filters for everybody. There own filters are labeled "Champ".


99 K3500 RCLB


 
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