| Author |
Message |
omarjlopez
Samba Member
Joined: January 23, 2015
Posts: 2
|
 Posted: Fri Jan 23, 2015 4:54 pm Post subject: Gas in oil |
 |
|
hey guys so i have a 69 vw squareback and theres gas in the oil.
i started it up today and oil/gas was spewing out of the oil breather. there is also like a knocking noise that was not there before. any ideas on what could be a probable cause? |
|
| Back to top |
|
 |
KTPhil 
Samba Member
Joined: April 06, 2006
Posts: 34021
Location: Conejo Valley, CA
|
| Posted: Fri Jan 23, 2015 5:11 pm Post subject: |
|
|
A little more info, please!
How long have you had the car? Is this a daily driver or a project car? When did it last run right? Carbs of FI? etc. |
|
| Back to top |
|
|
omarjlopez
Samba Member
Joined: January 23, 2015
Posts: 2
|
| Posted: Fri Jan 23, 2015 6:56 pm Post subject: |
|
|
| had it for a little under a year, was my daily, but i didnt drive a whole lot since my job is two freeway exits away. the whole gas in the oil thing was about 3 months ago and i havent driven it since then. one of the carbs was leaking fuel after the car was shut off like this https://www.youtube.com/watch?v=PKMlfoVy4Js |
|
| Back to top |
|
|
KTPhil
Samba Member
Joined: April 06, 2006
Posts: 34021
Location: Conejo Valley, CA
|
| Posted: Fri Jan 23, 2015 10:12 pm Post subject: |
|
|
| When it was converted to carbs the FI fuel pump was replaced with a proper carb unit, right? |
|
| Back to top |
|
|
W1K1
Samba Member
Joined: March 04, 2004
Posts: 4921
Location: Southern AB
|
| Posted: Sat Jan 24, 2015 9:31 am Post subject: |
|
|
You must know what height the floats are set at, if there is a non floating float, what is the fuel pressure?, and whether the your needle valve is working.
Simple as that.
One of these things is not right
_________________
http://www.thesamba.com/vw/archives/manuals/jim_martin_engine_build.php
1973 super
1965 squareback 1500E
1971 bay window westy- subi swap |
|
| Back to top |
|
|
Mike Fisher
Samba Member
Joined: January 30, 2006
Posts: 17970
Location: Eugene, OR
|
| Posted: Sat Jan 24, 2015 10:19 am Post subject: |
|
|
You should have just taken it to a VW mechanic 3 months ago if you're not a mechanic. For $200 he could have fixed your carburetors & dialed in your fuel pressure? You'll learn a lot by what he does to the car! Next time maybe you can fix it yourself? 
_________________
https://imgur.com/user/FisherSquareback/posts
69 FI/AT square Daily Driver
66 sunroof,67,70,71,71,71AT,72,72AT,73 Parts
two 57 oval ragtops sold
'68 Karmann Ghia sold
Society is like stew. If you don't keep it stirred up you end up with a lot of scum on the top! - Russ_Wolfe/Edward Abbey |
|
| Back to top |
|
|
Bobnotch
Samba Member
Joined: July 06, 2003
Posts: 22431
Location: Kimball, Mi
|
| Posted: Sat Jan 24, 2015 8:36 pm Post subject: |
|
|
| KTPhil wrote: |
| When it was converted to carbs the FI fuel pump was replaced with a proper carb unit, right? |
You'll need to find out what fuel pump is on the car before going too far. If it's the stock FI pump, then it's putting out too much pressure. If it's a mechanical pump, it could be putting out too much pressure. If it's got a low pressure electric pump, it could be putting out too much pressure (depending on the pump). It really boils down how much fuel pressure do you have? You're looking for 2.5 to 3.5 psi. any more than that, and you'll be over pressurizing the needle and seat, and dumping fuel down the carb throats.
_________________
Bob 65 Notch S with Sunroof
71 Notch ...aka Krunchy; build pics here;
http://www.thesamba.com/vw/forum/viewtopic.php?t=249390 -been busy working
64 T-34 Ghia...aka Wolfie, under construction... http://www.thesamba.com/vw/forum/viewtopic.php?t=412120
| Tram wrote: |
| "Friends are God's way of apologizing for relatives." |
| Tram wrote: |
| People keep confusing "restored" and "restroyed". |
|
|
| Back to top |
|
|
nodrenim
Samba Member
Joined: October 06, 2006
Posts: 843
Location: Dobson, North Carolina
|
| Posted: Mon Jan 26, 2015 5:33 pm Post subject: |
|
|
| Also, if you drive with excess gas in the crank case, you can burn out the bearings in your engine due to oil dilution. Not a very cheap thing to have happen. Good Luck! |
|
| Back to top |
|
|
sjbartnik
Samba Member
Joined: September 01, 2011
Posts: 5998
Location: Brooklyn
|
| Posted: Wed Jan 28, 2015 11:49 am Post subject: |
|
|
| nodrenim wrote: |
| Also, if you drive with excess gas in the crank case, you can burn out the bearings in your engine due to oil dilution. Not a very cheap thing to have happen. Good Luck! |
Which would cause a knocking noise as reported in the OP.
Do NOT start this engine until you sort out the fuel problem. Gasoline is a solvent and if it gets into the crankcase in volume it washes the oil from surfaces that need to be lubricated resulting in severe engine damage quite quickly.
Based on the knocking noise reported, I have some concerns that this has already happened, but one thing at a time.
Once you sort out the fuel issue, then you must change the oil before starting the engine. Then you can start the engine listen for any expensive noises. If the knocking noise is still present that could indicate a problem. Especially if, when you raise the engine rpm and then let off the throttle, you hear the knock more/louder. That's rod knock and means engine rebuild time.
Check your fuel pump, check your fuel pressure, check the condition of the inlet valves in the carb float bowls, check the floats themselves to make sure they actually float and are not filled with gas. Then report back. |
|
| Back to top |
|
|
Danwvw
Samba Member
Joined: July 31, 2012
Posts: 8892
Location: Oregon Coast
|
| Posted: Wed Jan 28, 2015 12:01 pm Post subject: |
|
|
My 67 beetle used to do this when it would get really cold out say below 15' F or so. Be sure to change the oil before you drive it. Sounds like like the engine has some miles on it and is knocking without having the right oil in it. Probably it's a stuck float in one of the carbs but driving it with the chokes partly closed in really cold weather can do it too. Make sure to not overfill it with oil, It may happen again and if so you will need to change the oil every time it happens or yes you will ware out the rod bearings in really short order. Also only filling the gas tank 1/2 full of gas may stop it.
_________________
1960 Beetle And 1679cc DP W-100 & Dual Zeniths! |
|
| Back to top |
|
|
|
