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Author Topic: Blow by checks?  (Read 3226 times)

August 02, 2008, 04:38:21 am

Smokey Eddy

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Blow by checks?
« on: August 02, 2008, 04:38:21 am »
I've been reading posts about checking blow by on the valve cover and block??

Is the valve cover check this?
i apologize for the poor photo but it was the best i had

if you take the hose off that is that your blow by comming out? I thought it was just oil vapour...
im struggling feverishly to fix my starting woes while avoiding dropping cash i DONT have (ie. rebuild.)
and the check on the block? I have no clue. Can anyone explain? and how much is too much?
cheers,
Ed.


Ed
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Reply #1August 02, 2008, 07:51:47 am

burn_your_money

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Blow by checks?
« Reply #1 on: August 02, 2008, 07:51:47 am »
Yes either that or the oil filler cap. Oil vapours are blow by.
Basically if you can see it puffing a lot and thick you have problems.

Starting problems aren't always related to compression. Either bad timing, air leaks into the pump or a bad starter or starter circuit as well as glowplugs need to be checked as well
Tyler

Reply #2August 03, 2008, 06:50:19 am

FWD.MOTION

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please conferm
« Reply #2 on: August 03, 2008, 06:50:19 am »
It's normal to have some oil in your intake on a vw diesel?
BASELYNE

Reply #3August 03, 2008, 09:35:28 am

mk2diesel

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Blow by checks?
« Reply #3 on: August 03, 2008, 09:35:28 am »
Yup ... that blow by has to go somewhere  :wink:

Reply #4August 03, 2008, 02:46:53 pm

FWD.MOTION

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Blow by checks?
« Reply #4 on: August 03, 2008, 02:46:53 pm »
so if my rings were not blowing by then there wouldnt be oil in the intake>?
BASELYNE

Reply #5August 03, 2008, 03:07:24 pm

burn_your_money

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Blow by checks?
« Reply #5 on: August 03, 2008, 03:07:24 pm »
there will always be some blowby
Tyler

Reply #6August 04, 2008, 05:00:34 pm

Smokey Eddy

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Blow by checks?
« Reply #6 on: August 04, 2008, 05:00:34 pm »
Thanks, cheers mates
I have a decent amount of oil in my intake. None has gone down into the air filter however. A decent amount as in if i shove a paper towel in there almost to the turbo it comes out about 75% solid black.
Also, does anyone know if you can change the rings by dropping the pistons out the oil pan. I've removed my pan before and was tempted to change the rings but i wasn't sure what kind of issues i'd run into so i didn't do it.
Ed
Blacked out mk2 AAZ Jetta RIP. You are missed.
White 1999.5 ALH Golf 2dr. Low & wide. Rammed off the road RIP.
Blue 2009 CR140 Jetta CBEA/CJAA. Malone stage 2. EGR/DPF/Exhaust-valve deletes. 2.5" open exhaust. ADP Turbo swap. 1-stage nitrous kit. THROWN ROD

Reply #7August 04, 2008, 05:17:36 pm

burn_your_money

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Blow by checks?
« Reply #7 on: August 04, 2008, 05:17:36 pm »
Quote from: "Smokey Eddy"
A decent amount as in if i shove a paper towel in there almost to the turbo it comes out about 75% solid black.


I wouldn't be worried by that
Tyler

Reply #8August 04, 2008, 05:26:47 pm

zukgod1

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Blow by checks?
« Reply #8 on: August 04, 2008, 05:26:47 pm »
Quote from: "Smokey Eddy"

Also, does anyone know if you can change the rings by dropping the pistons out the oil pan. I've removed my pan before and was tempted to change the rings but i wasn't sure what kind of issues i'd run into so i didn't do it.


Pistons have to come out the top :(

However it's really not that big a deal to pull the head to do it.

I'm planning on a head removal here soon.
dan

99 Golf TDI (now CNG powered) , 82 TD Caddy