Holmes Posted January 4, 2006 Share Posted January 4, 2006 A friend of mine has a fresh rebuild in his car. It ticks for a few minutes almost every time it's started. He's been watching his oil level regularly as was recommended for the rebuilt engine. He said he has added about 2.5 quarts in the first 1k miles. Is that about right for a new rebuild? It has new PCV hoses and a Subaru valve. At first it kind of sounded like one particular lifter, but the tick has quieted down a little and now it sounds more like all of them. He told me that it wouldn't stop ticking this morning on his way to work, so he pulled over to check the oil. It was only a tad low, but now there are bubbles in it. Brand new pump. His oil pressure is kind of weird too. It doesn't seem to reach full pressure for 3-5 minutes or so. I know the guages aren't that accurate, but his old engine would pump full pressure at all times on the same guage. Rebuilder says it's the front seal? Not the mickey mouse? Said it can let in air and not leak oil. His mechanic isn't too sure and doesn't like tearing into a fresh rebuild unless he knows exactly what it is. Anybody have 2 cents to lend? Link to comment Share on other sites More sharing options...
Subarian Posted January 4, 2006 Share Posted January 4, 2006 2.5 quarts in 1000 miles seems kind of high for me. When I rebuild engines, depending on whether I use iron, chrome, or moly rings, I expect half a quart to a quart of consumption in the first 1000. The oil pressure is weird, too. Usually you'll have the highest pressure shortly (less than 30 seconds) after startup on a cold engine. Where is he seeing the bubbles in the oil? Has it changed color any? As far as the lifters, were rebuilt lifters used, or were the old ones reused? If he got a long block, I'd see what kind of warranty they offer. He should definitely make the rebuilder aware of the problems. Link to comment Share on other sites More sharing options...
Holmes Posted January 4, 2006 Author Share Posted January 4, 2006 The bubbles are on the dipstick. Hadn't seen them until now. My car gets some bubbles every once in a while if I push it past 3k before I change the oil, but my car has over 200k on it with many a leak. I didn't expect to see it on a fresh rebuild, especially with only 1k on the oil. The lifters are rebuilt. The oil hasn't really changed color much. Just slightly darker than fresh. The rebuilder knows about it. He's saying front seal on the pump probably needs to be replaced. Link to comment Share on other sites More sharing options...
soobscript Posted January 5, 2006 Share Posted January 5, 2006 That's way too much oil consumption. Mine did that BEFORE the rebuild with 220k miles. Oil pressure is all wrong too. I would guess a pump seal. Link to comment Share on other sites More sharing options...
destey Posted January 13, 2006 Share Posted January 13, 2006 I too suffer from the TOD. I don't see any bubbles on the dipstick on mine. Because I don't, does that mean oil aeration isn't a problem? I've taken the rocker assemblies out 4 times already. All the HLA's were replaced with rebuilts from Mizpah, so i know that isn't the source. The oil passages in the rocker arms are clear (blew through them). What does that leave? I've heard about aeration from the oil suction tube and bad oil pumps (low pres) cause the TOD. But if I don't see aerated oil on the dipstick, doesn't this rule it out? Still could be a bad oil pump I guess. The tick seems to come from the rockers closest to the firewall. Is this where oil pressure is the lowest (ie are the other cylinders fed better). thanks for the help guys, Derek Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now