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Old 07-13-2017, 06:37 PM
Soapmyster Soapmyster is offline
Tech Enthusiast
2005 Altima
2005 Altima
 
Join Date: Oct 2012
Location: Oriskany
Posts: 180
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Welcome To NiassanHelp
I am sorry you didnt come here first.
Given the oil consumption problem I would not have had the headgasket replaced. That oil consumption is very excessive.
Sadly the 02-04 2.5 engine had a bad flaw. It was not the engine but rather the precat that was the problem.
The precat would fail and cause debris to get sucked back into the engine and score the shit out of the cylinder walls.
This in turn would cause the oil consumption which eventually means RIP for the engine.
I have had a few and they are wonderful cars.
My 2003 has the same issue. The oil gets dirty quickly, I have to add oil more than normal, and I had to replace the Cat due to the oil contamination. The oil contaminates the tips of the oxygen sensors.
I am lucky as I have 230k on my 03 and it still runs like a top, consumption aside.
I also have a 2005 with 320k miles that has never burned a drop of oil and runs like new. Like I said excellent engine but the Precats killed the 02-04 and maybe other years.
Nissan Had extended warranty for the problem and were replacing the engines due to the issue.
I am sure they are no longer doing anything about them by now.
I almost replaced my engine last year but funds fell short so I just decided to keep monitoring it.
If you had known more I would have suggested replacing the engine assembly, even if with a donor from a 2005-06 or up would likely have been fine.
As for where you are now I can only suggest replacing the precat and running a little heavier oil, and a additive for leaks.
That is what I am doing and have had no issues, but if your consumption is that excessive then I am not sure if it will work for you.
I might also mention I mainly travel on the highway and I do not idle at all unnnecessarily and my cat has not gotten plugged.
I wish you the best of luck. Did the mechanic mention anything about the cylinder walls while the head was off?
Who diagnosed the headgasket?
If I went through a quart every 200 miles my hood would be open constantly. I would replace the engine or car if that was the case

Last edited by Soapmyster; 07-13-2017 at 06:49 PM.
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