 7A-FE burning oil |
 May 17, 2012 - 11:29 AM
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Enthusiast Joined Nov 23, '10 Currently Offline Reputation: 0 (0%)  |
So my 95 ST had a rod knock and was burning oil so I figured I'd do a full rebuild. I replaced the pistons, rod and main bearings, and new rings. The the engine was over-bored to .50mm and the crank to .25 over-bore, which called for bigger pistons and bearings. I followed Smaay's rebuild thread. Everything looked good. So once the rebuild was done I cranked the motor and it turned on very quickly. And for the first 700 miles I noticed the oil level wasn't changing so I thought it wasn't burning any more oil. But then when it was at 1,200 I checked the dipstick and it was missing about a quart. I've changed the pcv valve and its still burning oil. I opened up the intake manifold cover and its full of oil. I don't know what else to do. I'm thinking Im gonna have to throw away a lot of money and just get rid of this motor and get a used one that will hopefully not burn any oil. Anyone have any suggestions as to what I should do? Car runs perfectly fine, its just that it burns oil. I did a compression test and it reads a little over 160 on all cylinders. No leak down test has been done yet.
This post has been edited by metaldude19: May 17, 2012 - 11:30 AM |
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May 18, 2012 - 5:32 PM
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 Enthusiast  Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%) |
its possible the rings were installed upside down (theyre beveled to scrape oil off, and if its backwards itll let ALOT of oil through)
-------------------- QUOTE "And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH 1994 GT: V6 swap, 5speed E53 W/ LSD, All Power, now RED 1995 ST: SOLD @273k miles, Auto, all power, CarPC, White 1994 ST: Totaled, 5spd, all power, Red RIP 07/09/09 @ 241,810 1994 Lexus LS400: This is my new DD |
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May 18, 2012 - 5:51 PM
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Enthusiast Joined Feb 8, '10 From North Carolina Currently Offline Reputation: 0 (0%) |
QUOTE (stephen_lee @ May 18, 2012 - 5:32 PM)  its possible the rings were installed upside down (theyre beveled to scrape oil off, and if its backwards itll let ALOT of oil through) Also if the ring gaps are lined up itll let some through. gotta make sure there all at different sides of the piston. |
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May 19, 2012 - 10:36 AM
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 Enthusiast Joined Oct 29, '11 From Haltom City, Texas Currently Offline Reputation: 1 (100%) |
QUOTE (celica74 @ May 18, 2012 - 5:51 PM) QUOTE (stephen_lee @ May 18, 2012 - 5:32 PM) its possible the rings were installed upside down (theyre beveled to scrape oil off, and if its backwards itll let ALOT of oil through) Also if the ring gaps are lined up itll let some through. gotta make sure there all at different sides of the piston. Piston rings spin. However you installed is not the way they will stay. In fact, the manual calls for you to install them all facing a certain direction doesnt it? |
Posts in this topic
metaldude19 7A-FE burning oil May 17, 2012 - 11:29 AM
Special_Edy QUOTE (metaldude19 @ May 17, 2012 - 12... May 17, 2012 - 12:34 PM kurt95gt Sounds like the head needs rebuilt now too May 17, 2012 - 12:40 PM
metaldude19 QUOTE (kurt95gt @ May 17, 2012 - 1:4... May 17, 2012 - 12:55 PM kurt95gt Hmm
Is it maybe getting pulled into the intake th... May 17, 2012 - 1:08 PM metaldude19 QUOTE (kurt95gt @ May 17, 2012 - 1:0... May 17, 2012 - 3:50 PM kurt95gt Id start her up an pull the hose off an see is any... May 17, 2012 - 4:09 PM metaldude19 QUOTE (kurt95gt @ May 17, 2012 - 5:0... May 17, 2012 - 4:42 PM kurt95gt Yes
Atleast one of those is a breather for the va... May 17, 2012 - 4:55 PM metaldude19 QUOTE (kurt95gt @ May 17, 2012 - 4:5... May 17, 2012 - 6:38 PM celica74 QUOTE (kurt95gt @ May 17, 2012 - 4:5... May 17, 2012 - 6:50 PM Special_Edy Pull the breather hose off while the engine is run... May 17, 2012 - 6:56 PM Smaay hhmmm sounds like you did everything right. my fir... May 17, 2012 - 8:48 PM metaldude19 QUOTE (Smaay @ May 17, 2012 - 8:48 P... May 17, 2012 - 9:17 PM metaldude19 QUOTE (stephen_lee @ May 18, 2012 - 5... May 18, 2012 - 7:32 PM |
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