| [ Total Views: 832 | Total Replies: 9 | Thread Id: 66438 ] |
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 General_Failure
A.k.a.: Tristan
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Use your head, don't abuse it!
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| posted on December 5th, 2007 at 03:04 PM |
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Oh no! Fuel in oil
G'day.
I had a horrible suspicion confirmed more or less today. That fuel is somehow getting into the oil of my 1800 dual carb van.
My first clue was it got through $10 awfully fast, especially considering I was just doing the timing etc.
Next clue was the weird oil puddle it is making. It seemed awfully absorbable by everything.
Another big one was the oil level seemed to go up.
I didn't pick up on it earlier because my sense of smell is pretty useless.
Question is, what is the most likely culprit?
I'm using an electric fuel pump. Every time I turn on the van there is the "tacka-tacka" of it filling the carbs then it drops to maybe one
"tack" every 30 seconds when they are full. Not perfect I know, but it doesn't seem like a gushing leak.
Also I generally don't have the van turned on unless it is running because of both pump and coil being active and all.
Is it:
* The latent pressure in the fuel line driving the fuel through.
* The electric pump not stopping the flow properly when the van is off.
* The carbies just letting fuel dump through when its running.
* ???
Also something worth noting is I have to keep pumping the accelerator to get it started, and it feels like it keeps starving of fuel.
About all I'll be able to do in the next week due to time constraints is reconnect the mechanical pump, change the oil and put some fuel in.
It's not on the road so its no major issue. All I have to do is move it to get another car out.
If at first you don't succeed. Build, build again.
Vehicle: 1975 Special order delivery walkthrough panel based LCA pop-top camper. Motor: Nippon 1.8L Single port Wasserboxer, Transmission: 3 rib 002.
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phatratpat
Fahrvergnugen
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| posted on December 5th, 2007 at 03:35 PM |
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faulty needle and seat,,happened to my first engine
not good, change oil or motor goes boom ! ! !
mine actualy hydrolocked and bent a conrod !.....
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greedy53
Bishop of Volkswagenism
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| posted on December 5th, 2007 at 07:08 PM |
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yep over flowing the carby while stationary i had a gemini that emptyed the tank and filled the sump in 12 hours bloody funny but really clean engine
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rocknrob
A.k.a.: Rob
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| posted on December 5th, 2007 at 07:22 PM |
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trouble with a kombi is that once the tank is around half full or so the fuel level is higher than your carbs...any leak at all and petrol will syphon
into your engine even while you are sleeping I've heard that adding
an electic pump means you need and electric shutoff solenoid
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Tazz
A.k.a.: Tazz Devil
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| posted on December 5th, 2007 at 07:49 PM |
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yup.. added both to my Fasty when i drained the fuel tank into my sump...
They work great.
Tazz
1962 Type3 Squareback
1967 Type3 Fastback "Kermit"
The truth is important. It will set you free
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Craig Torrens
A.k.a.: Craig Torrens
Scirocco Rare
6 times Australian, 7 times State Hillclimb Class Champion
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| posted on December 5th, 2007 at 08:46 PM |
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| Quote: | Originally
posted by General_Failure
Also something worth noting is I have to keep pumping the accelerator to get it started, and it feels like it keeps starving of fuel.
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Its not starving, its actually flooded and the spark plugs are wet with fuel.
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h
A.k.a.: Towely BuMpEr KING! ILLegal ALIEN on a roadtrip
Scirocco Rare
fractals - an ever changing lifestyle
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| posted on December 5th, 2007 at 11:32 PM |
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yep fuel in oil in a T2 = needle and seats sticking open..
get some new ones and test em about 50 times so they dont stick open and away you go
painful but ohhh so T2..
goodluck with it
pauly
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68AutoBug
A.k.a.: Lee Noonan
Aircooled Master
Beetle Restorer - Experience over 138% - YIKES --
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 posted on December 6th, 2007 at 11:31 PM |
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Yes I agree its the needle and seat [s]
leaking too much fuel into the bowl....
it can be caused by too much pressure in the electric pump....
or a bit of dirt in the needle and seat...
You can try taking the needle and seat out and blowing thru them...
and pushing the needle in and out a lot of times...
if there is something causing the excess fuel...
like a bit of dirt etc...
You may clean it enough to work OK....
I had a few problems.... including the above one...
and I added a fuel pressure regulator...
and eventually a fuel pressure gauge...
and turned the fuel pressure down to 2 PSI... approx..
so, every time I look at the gauge [in the engine bay]
I can see how much pressure is in the line....
cheers
Lee
http://community.webshots.com/user/vw68autobug
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- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
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ancientbugger
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| posted on December 7th, 2007 at 07:43 AM |
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But as Greedy said, you do get a very clean engine
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General_Failure
A.k.a.: Tristan
Custom Title Time!
Use your head, don't abuse it!
Posts: 1036
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| posted on December 7th, 2007 at 09:00 PM |
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I'll pull the carbies to bits in the next couple of days to have a look. I'm surprised the fuel cutoff solenoids didn't do their job to be honest.
If at first you don't succeed. Build, build again.
Vehicle: 1975 Special order delivery walkthrough panel based LCA pop-top camper. Motor: Nippon 1.8L Single port Wasserboxer, Transmission: 3 rib 002.
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