I recenlty changed the oil in my '84 Pony. The car had sat unused for 3-4 months (body work) and as it neared completion for this year I decided to change the oil. To my surprise ( i did run the engine a bit to move the stagnant oil around) it drained out with the viscosity of water and smelled like gasoline. The engine has over 310,000 KM's. It has been known to burn oil occasionally. This is the one that's gonna get replaced by a V6... so just out of curiosity, WTF happened to my oil?
__________________
1987 Hyundai Stellar CXL 4G63
-Front Fog lamps
-6K HID Kit
-1988 Firebird spoiler
-Monte Carlo SS tip
-Ford EXP 15x6 alloys all around
-Sony Xplod deck
My other cars are Hyundai Ponys! 1987 (4G16 "Saturn" 4spd), 1986 (4G14 5spd), 1984 (4G63 5spd)
The diaphram in your AC pump has ruptured, allowing the gasoline to mix with the oil.you know what happens then, so if you want to continue running the car you will need a new AC pump and the gaskets to go with it. Good luck, and btw, do you have any problems logging on to TSR!?! I dont seem to be able to get in there, from all the error msgs it looks like the site's down!:disappointed:
__________________ "The racing car is not a mechanical exercise, it is not an art object. The racing car is simply a tool for the racing driver."~Carrol Smith(1932 - 2003)
That it does Meghan, and I seen some synthetics break down after 6000kms and have water-like viscosity, but they have never had a petrol- smell. I had an Excel(dammit I'm forgetting everything!) come in with this same problem, and the engine was eating oil as well. What happens is that the AC pump is actuated by a PUSHROD that is run either by the cam or the crankshaft(cant remember which one it is for the Pony, on the Excel it's cam-run) but the net result of the diaphram becoming ruptured is the same; petrol is spilled into the oil gallery that keeps the pushrod lubricated and mixes with the oil, accelerating it's breakdown. The really bad thing about this is that the oil also becomes more flammable(it gets a lower flashpoint)and the situation becomes dangerous.
Jed, you mentioned before that your engine was eating oil right? This may be your culprit, it's the only one that I could think of.
[Edited by MechaniX_034 on Sep 30, 2002 1:05 AM]
ARRRRGH ANOTHER EDIT! Because fo the fuel pressure loss the engine will begin to run lean, and under hard throttle, the diaphram [b] become jammed in the wide-open position because of the vacuum line not being able to do its job because of the leak, creating a situation when the car will run over-rich at the lower RPM range. The opposite is also possible. It can lead to the conclusion that the carby has been nuked. DAmmit I gotta get my notebook sent to me
[Edited by MechaniX_034 on Sep 30, 2002 1:09 AM]
__________________ "The racing car is not a mechanical exercise, it is not an art object. The racing car is simply a tool for the racing driver."~Carrol Smith(1932 - 2003)
If indeed the oil is mixed with gasoline, I would not know if it's eating oil cuz I drained out just short of 4 litres of oil, I put in a little over 4L when I change the oil
What's an AC diaphragm?
I have an external mounted fuel PSI gauge and it indicates just below 4PSI. THe norm is 2.7 to 3.7 so it's just fine. The fuel pump is cam run, it is mounted in the front of the engine. There are 3 vacuum lines to the carburetor, two of which are blockled off (previous owner removed dash-pot, a rev de-limiter when you take your foot off the gas) and the last one goes to the distributor.
The oil pump: Trochoid type (with release valve)
From looking at these pics,(Pony shop manual) and previous experience with my other Pony's oil pump (makes diesel noises when started, and continues for a while... couldn't fix problem after replacing inner and outer rotors???) it seems the Oil pump runs off a rod connected to the timing chain or crank. Also, the gasket Hyundai provided me with for the oil pump cover is paper thin and looks likle it wouldn't stop honey from leakling out. WTF? I suspect the oil pump (in my otehr Pony) rotor bore in the chain case is scored. That warrants replacement of the ENTIRE front chain cover. IT's a 2 hour kjob just to take it all off to get to the chain...
__________________
1987 Hyundai Stellar CXL 4G63
-Front Fog lamps
-6K HID Kit
-1988 Firebird spoiler
-Monte Carlo SS tip
-Ford EXP 15x6 alloys all around
-Sony Xplod deck
My other cars are Hyundai Ponys! 1987 (4G16 "Saturn" 4spd), 1986 (4G14 5spd), 1984 (4G63 5spd)
Dude if the diaphram tears then fuel will leak out of it, the gasket on the AC pump(fuel pump) is there to stop the engine oil from being leaked onto the road, if the diaphram goes then the fuel will will be leaked into the cank case. If you have a vacuum tester you can check it for leaks.
__________________ "The racing car is not a mechanical exercise, it is not an art object. The racing car is simply a tool for the racing driver."~Carrol Smith(1932 - 2003)
Do you have the Pony seveice manual? It should tell you how in there. :evil:
__________________ "The racing car is not a mechanical exercise, it is not an art object. The racing car is simply a tool for the racing driver."~Carrol Smith(1932 - 2003)
AutoForums.com is the premier network of enthusiast-owned
enthusiast-operated automotive communities.
We operate more than 100 automotive forums where our users consult peers for shopping information and advice, and share
experiences and opinions as a community.
What\'s this mean?
Linear Mode
