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Old 09-26-2013, 09:59 PM   #1
cassinelli23
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Default Blow by or Bad ringland?

I just upgraded to a blouch 1.5xtr which i had installed, tuned (not to full power since im on the stock pistons) then took out to get rebuilt because it was leaking oil. After re-installing it I noticed a lot of oil in the vacuum line coming off the compressor housing. I now have a puff of smoke on start up. Everything i could find said get a compression test but I'm hoping for it to be oil from blow by. I just ordered a crawford AOS because its cheaper than a new short block. Does anyone think this is the problem?
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Old 09-26-2013, 10:10 PM   #2
krambte79
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Pull the oil fill cap or dip stick while its running. If u have smoke/exhaust coming out then u likely have a cracked piston ringland. If not the case do a compression check and try AOS. Good luck
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Old 09-27-2013, 01:33 PM   #3
TS7XREX
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Is it normal for there to air puffing out of the oil filler when it's idling?
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Old 09-27-2013, 01:58 PM   #4
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Originally Posted by TS7XREX View Post
Is it normal for there to air puffing out of the oil filler when it's idling?
Yes it is normal for air but as long as there is no smoke.

U cant go wrong with the Crawford AOS as I have one and it works extremely well not even an oily film on the compressor side of things
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Old 09-27-2013, 02:46 PM   #5
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Excessive blow-by is the main symptom of a bad ringland. You don't want it to be from blow-by. There are a lot of sources of oil in the intake that could cause a puff of smoke on startup. I agree that a Crawford AOS is probably a good idea. A compression or leakdown test would be a good idea too.

Was the turbo leaking oil into the compressor? It's likely that this is the cause of your smoke puff.
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Old 09-27-2013, 03:54 PM   #6
cassinelli23
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The turbo was leaking into the compressor prior to rebuild. after it got rebuilt there was oil in the vacuum lines off the compressor housing. I didnt take the inlet or IC off to check inside. The AOS should be here in a few days. The smoke doesnt seem to happen everytime.
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Old 09-27-2013, 04:24 PM   #7
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If you continue to get the smoke, then there could be a problem. AOS could fix it, but it does take some time for the oil to work itself out of your intake tract. If the smoke has been lessening since the rebuild, then it's quite possible that it was all coming from the leaking seals. I would avoid running too hard until the smoking clears up, since the oil reduces your effective octane level. The only way to know the internal health of the motor is to do a proper leakdown test on it.
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Old 09-28-2013, 08:14 PM   #8
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So earlier today everything seemed fine. Later on I was getting the smoke on cold start then 21psi kinda bouncing back and forth to 19 when target boost is 23. There was no smoke from the oil cap. Is it possible that every time it runs good I beat it and pull in oil then it smokes the next time around? Still have to wait till Monday to do a compression test or to send my tuner some logs
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Old 09-28-2013, 08:44 PM   #9
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Originally Posted by cassinelli23 View Post
So earlier today everything seemed fine. Later on I was getting the smoke on cold start then 21psi kinda bouncing back and forth to 19 when target boost is 23. There was no smoke from the oil cap. Is it possible that every time it runs good I beat it and pull in oil then it smokes the next time around? Still have to wait till Monday to do a compression test or to send my tuner some logs
In other cases of smoke on cold startup can be a result of over filling the motor with oil.
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Old 09-28-2013, 08:46 PM   #10
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I just checked it. It was pretty close to the low line so I put a little in
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Old 09-28-2013, 09:03 PM   #11
trev762
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Originally Posted by cassinelli23 View Post
I just checked it. It was pretty close to the low line so I put a little in
Just bc its on the low line doesnt mean u r overfilled as these boxer motors r a b$tch when it comes to checking the oil level lol.
The dipstick acts like a plunger when u clean it off before checking the level as the measurement comes from the dipstick tube and not from the oil pan like it should.
If u r parking on a somewhat level surface for the night and before u go in just wipe the dipstick off then check the level first thing in the morning before u go anywhere. Some people might beg the differ but this works for me and feel will be the most accurate reading. Do some searching on this subject as there is lots of info on this and find what best suits u hope this helps.
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Old 09-30-2013, 04:05 PM   #12
cassinelli23
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Went to do a compression test and found a LOT of oil in the intercooler pipe connector next to the battery as I had to remove the pipe to remove the battery. I didn't even bother going from there... Found the problem. I wiped out what I saw but I didn't go through the whole thing. I'm sure my front mount is full of oil. How long does it take to clean out on its own? It's been a few hundred miles so far and still bad.
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Old 09-30-2013, 04:08 PM   #13
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Get an AOS and run it for a few hundred miles and/or clean out the FMIC core by hand with gentle cleansers, aka don't use simple green or another aluminum eating solvent. Any of the oil in there will be sucked into your pistons, which isn't bad in small amounts... but it effectively lowers the octane rating of the gas being combusted. My blowby was so bad when I ran 23psi that I blew a ringland in a matter of a month or so.
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Old 09-30-2013, 04:40 PM   #14
cassinelli23
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I'm a pound or 2 off of 23 which is my target but I'm sure it has to do with all this oil. AOS should be here Friday. If I feel ambitious ill clean everything out by hand
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