1996 Mazda 323 noisy lifters and oil leak

Tiny
BAYOUB
  • MEMBER
  • 1996 MAZDA 323
  • 1.8L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 280,000 MILES
Hi
i have replaced the hydraulic lifters and still noisy at start up especially in the morning, I gave the engine a flush before the next oil change but the problem still unchanged.
also, the rear main seal leaking, replaced3 times in 1 week tried 2 different aftermarkets brands, last seal was genuine from mazda, all the same. After reading on the net, I came across someone mentioning the pcv valve may cause real main seal leak, I went and replace the pcv valve, the next day I found an oil stain under the car as before.
please assist, I need some good opinions here, my mechanic of 27 years experience has never came across things like these.
there is nothing worse than spending money trying to fix a problem and does not get fixed
what else could have been the problem. Please note when we replaced the lifters, the head was removed and sent away for machining and pressure test and had new seals and gasket replaced as well

thank you
bernard
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Friday, August 28th, 2015 AT 3:30 PM

6 Replies

Tiny
WRENCHTECH
  • EXPERT
You need to just give up on this. Your engine has 280,000 miles on it. The insides are just won out and it doesn't have enough oil pressure and everything is so loose it's going to leak from everywhere.
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Friday, August 28th, 2015 AT 4:32 PM
Tiny
ALEX_BUENA
  • MEMBER
For seals, you can use AT-205. Not sold in stores only online. When you changed lifters did you inspect rockerarms and pushrods? I had a lifter tick for my Ford Explorer 206k miles. I had thought it were the lifters but it wasn't one of my rockerarms had some what a deeper indentation that would leave a small gap between pushrods and rockerarm. Now it did start with a tick for one day of driving because a lifter had not been in action for a long time if that makes sense but after that day the tick vanished has not come back. Another thing that would tick is near the exhaust manifold area. Maybe run thicker oil if your vehicle can.
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Friday, August 28th, 2015 AT 7:43 PM
Tiny
ALEX_BUENA
  • MEMBER
Now if it is just noisy on cold start up and quiets when warmer then yea I would let it be.
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Friday, August 28th, 2015 AT 7:47 PM
Tiny
WRENCHTECH
  • EXPERT
This engine has no oil pressure. The main bearings are wasted to the point the crank is hammering out the seals. Nothing is going to save this engine at this point/ Any money put into it might as well be flushed down the toilet.
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Friday, August 28th, 2015 AT 7:47 PM
Tiny
BAYOUB
  • MEMBER
Thank you all for your answers, however, how did you determine it is oil pressure problem? I don't see any warning lights, engine temp is normal, drives smooth with lots of power, idle is great, freeway driving is excellent, no knocking or any other noises, this car has been well looked after and serviced regularly
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Friday, August 28th, 2015 AT 11:28 PM
Tiny
ALEX_BUENA
  • MEMBER
Can rent(loan-a-tool) a mechanical oil pressure tester from an auto parts tester if you are concerned about it. Like I said check manifold, another thing that can cause a Lifter tick is the distributor.
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Saturday, August 29th, 2015 AT 2:10 PM

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