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aRIf
07-10-2007, 10:59 AM
Why is that?

I changed the oil about 800 miles ago and I can smell the fuel when I check my oil level.

That's not good.

What seal or what cause of this problem? What do I need to replace ?

Any ideas ?

Thanks

aytheory
07-10-2007, 11:15 AM
Do a leak down test to make sure your cylinders are good.

offroader1006
07-10-2007, 03:54 PM
compression rings

aRIf
07-10-2007, 07:09 PM
do you guys know if there is a dyi for compression rings ?

mike-2ptzero
07-10-2007, 07:22 PM
do you guys know if there is a dyi for compression rings ?

Well that is a big job seeing that the cylinders need to be honed when replacing the rings. There are people that will actually come to you and hone the cylinders with the block still in the car, but you still have to pull the pistons out either from top or bottom which means either pulling the pan/crank or pulling the pan/head since you have to unbolt the rods to get the pistons out.

A4Shizzle
07-11-2007, 07:07 AM
Wait, DIY piston rings? More like "DIY" engine rebuild.

mike-2ptzero
07-11-2007, 07:15 AM
Wait, DIY piston rings? More like "DIY" engine rebuild.

Pretty much and at the begining of that DIY would say "Take it to a engine builder if you have never done this".[:p]

Don Supreme
07-11-2007, 11:38 AM
Threat it as a rod install or engine build.......... and treat the rings as a secondary objective.......

That way it will feel like you are getting something for your money.... It feels better to spend money for something new and special than just maintenance.... ahhah

AudiA4_20T
07-11-2007, 11:43 AM
Threat it as a rod install or engine build.......... and treat the rings as a secondary objective.......

That way it will feel like you are getting something for your money.... It feels better to spend money for something new and special than just maintenance.... ahhah

lol I agree how many times has something gotten bad and you just say, well that extra $200 was definately justified because I got the better one [:D]

aRIf
07-11-2007, 11:51 AM
hahahaha :D But i'm not ready to spend thousands at the moment [rolleyes]

Is it going to decrease my performance? or it already did? [:D]

I just dont want to engine blow on me, that's all [:)]

solowb5
07-11-2007, 12:05 PM
quit runing 25 psi daily on the streets then. u probally have a few months left untill it starts smokin like a frieght train. im guessing u let it go to long and ur pistons are going to friction weld themselves to ur walls. either way u look at it ur gonna have to spend atleats a grand to just replace the rings if u r doin it urself. i paid 2k in labor and gaskets for mine. i already had the pistons, rods, and race wear head studs.

aRIf
07-11-2007, 12:10 PM
I don't even see 25psi everyday, seldom I go over 15psi. I'm a relax drive :) I dive like a honda civic.

If I take the head and bottom out, should I able to see the condition of the pistons and rods ?

solowb5
07-11-2007, 12:37 PM
if ur going to do that then rebuild it. ur rings is what is going bad. u cant see those

mike-2ptzero
07-11-2007, 12:41 PM
hahahaha :D But i'm not ready to spend thousands at the moment [rolleyes]

Is it going to decrease my performance? or it already did? [:D]

I just dont want to engine blow on me, that's all [:)]

What does your compression readings look like at right now?



I can tell you exactly what happens when rings start to come apart, not only do you have to rebuild the engine you end up needed a new head because the small pieces of the ring end up compressed into the head surface over and over.

aRIf
07-11-2007, 12:51 PM
I'll do the compression test this weekend.

Can I do the test just by taking the ecu out? do I need to do something else like take out the fuel pump fuse?

This is a kind of a new problem. I smelled the gas in the oil last oil changed but it was not that bad. this time I already drove 700 only miles after a new oil change and smells very strong.

mike-2ptzero
07-11-2007, 12:59 PM
I'll do the compression test this weekend.

Can I do the test just by taking the ecu out? do I need to do something else like take out the fuel pump fuse?

This is a kind of a new problem. I smelled the gas in the oil last oil changed but it was not that bad. this time I already drove 700 only miles after a new oil change and smells very strong.

Just unplug the cam sensor plug and pull all the spark plugs.

aRIf
07-11-2007, 01:18 PM
Thanks guys and mike.

pinky
07-11-2007, 01:49 PM
or you could pull the wires on the coilpacks and fuel injectors.. thats what i usually do..

aRIf
07-12-2007, 06:46 PM
I got bored and I took the valve cover out;

http://img478.imageshack.us/img478/9568/head008li7.jpg
http://img293.imageshack.us/img293/9062/head007au2.jpg

And this is the cylinder head. it's all black there is like carbon on it it gets worst on the other heads step by step.

http://img293.imageshack.us/img293/9877/head009hq4.jpg

mike-2ptzero
07-12-2007, 07:17 PM
Head out? Dont you really mean you took the valve cover off since thats what it actually looks like.

aRIf
07-12-2007, 07:26 PM
yes valve cover sorry :)

Don Supreme
07-12-2007, 07:53 PM
Head out? Dont you really mean you took the valve cover off since thats what it actually looks like.

Dammit....

you beat me to it.

blackaudia4tk
07-12-2007, 08:07 PM
sell it or trade it in on something else ur gonna be in big debt really soon..air freshener and thick oil can be ur friend...maybe even try that engine restore stuff heard it works really good at least long enough to get rid of it

Xenogen
07-12-2007, 09:40 PM
Whoa Whoa Whoa...this has got me a bit worried now. My oil smells like it has a hint of gas in it but it doesn't wreak of gas. I just bought the damn thing and I'm running auto-rx right now...the car is running fine though. Am I completely fucked?

How much do these tests cost to do?

speedydragon
07-12-2007, 11:21 PM
try seafoaming it..doubt it would help you in this case tho :P

EuroIP
07-13-2007, 12:02 AM
+1
btw please change oil on time.. [:D]
try seafoaming it..doubt it would help you in this case tho :P

aRIf
07-13-2007, 10:59 AM
I just finished compression test

I did 2 tests. Second test results are in the parantesis.
I think the reason fist numbers are lower because I was little nervous to crack it.
---------------------------------------------------------------------------
Firewall
____
| 0 | -> 175 (180)
| |
| 0 | -> 166 (170)
| |
| 0 | -> 164 (180)
| |
| 0 | -> 159 (186)
------
Front of the Car


Any feedback ?

A4Shizzle
07-14-2007, 03:54 AM
I'm no expert on a4 compression results, but those look like decent numbers for any 10 year old car with a fair amount of miles. From what I see, you don't want to see a huge difference between cylinders and you're showing less than 10%. There's probably some fuel getting through, but would it be worth the hassle? Better wait till someone else chimes in with a more expirienced opinion.

Seafoam might help that carbon buildup btw...

94jedi
07-14-2007, 04:41 AM
I just finished compression test

I did 2 tests. Second test results are in the parantesis.
I think the reason fist numbers are lower because I was little nervous to crack it.
---------------------------------------------------------------------------
Firewall
____
| 0 | -> 175 (180)
| |
| 0 | -> 166 (170)
| |
| 0 | -> 164 (180)
| |
| 0 | -> 159 (186)
------
Front of the Car


Any feedback ?

your second test looks nearly identical to mine except I had 176 in cyl 3. Actually your test looks decent.

dukez
07-14-2007, 04:54 AM
http://img293.imageshack.us/img293/9062/head007au2.jpg

Does anyone know the purpose of that black plastic thing covering half the left side (of motor) of the camshafts? Because when i replaced my valve cover gasket a couple months ago, i removed it and didn't bother reinstalling it. [:p]

mike-2ptzero
07-14-2007, 08:01 AM
That is the spot where your oil cap is, they put a cover there so that when you remove the cap the cam isn't exposed. It also keeps oil from being sprayed out if you remove he cap with the engine running.