Printable Version of Topic
Click here to view this topic in its original format
914World.com _ 914World Garage _ It's running perfect
Posted by: Levi May 29 2004, 02:21 PM
I went out and started my blue 914 this morning and it runs perfect (to me) as long as the oil filler cap is Off it runs GREAT.
I'm guessing that it should'nt be blowing air out of the oil filler hole but it is, there is no color to it just plain ole air.
We know I can't run it with no oil filler cap so whats the fix??
Posted by: skline May 29 2004, 02:24 PM
you could try venting the crankcase. I thought the 1.8's though had to have a sealed case. What do I know, I am a V8 guy.
Posted by: Levi May 29 2004, 02:33 PM
Yea me to.
But I guess if I'm going to drive a 914 I'd better learn to work on them.
Luckily my 74 2.0 is carbureted so I won't have to deal with this OLD FI shit.
Well it seams this case is too sealed because the air wants out real bad, it has to be vented somewhere I just need to find out where and how to fix it.
Posted by: skline May 29 2004, 03:40 PM
Well, I do know some stuff, There is by the oil fill, a vent tube that goes to the intake for venting. Make sure that hose is not plugged up. It if is clogged, you will have problems like you are having. Check that hose first.
Posted by: Levi May 29 2004, 07:06 PM
It wasn't plugged, For the time being I removed the hose and plugged the opening on the intake hose, it runs really good but its not right.
I'm not sure what the deal is, it appears that either no one can help me or I pissed most everyone off, or am I just to good looking...
Posted by: 415PB May 29 2004, 07:12 PM
Levi, how many times do I have to tell you -YOU HAVE A VACUUM LEAK-! 
Posted by: Levi May 29 2004, 07:37 PM
:finger2: Thanks for the moral support..
Your new Avatar sucks by the way....
Posted by: SirAndy May 29 2004, 08:59 PM
the vent hose from the oil filler cap is supposed to go to your air-filter if you DON'T have a PCV valve in the filler cap (just the metal mesh crap) OR, if you have a PCV valve in the filler cap, the vent hose is supposed to go to the throttle body (that gives it more vacuum so it opens the valve easier) ...
if you have a PCV valve and don't connect a hose at all, the valve won't open. if you just connect the hose to the air filter, the valve also won't open. it needs the vacuum from the TB.
if you don't have the PCV valve, the hose needs to go to the air filter, if you connect it to the TB, it will suck way too much air out of the case and you can hear your engine scream really bad.
Andy
Posted by: skline May 29 2004, 10:53 PM
Wow, that sounded like stereo installation intructions. I am sure glad I dont have FI on my car anymore. I would not even begin to understand any of that. Good luck Levi. I dont think you pissed anyone off, we all have a sense of humor, and if we dont, who cares?
Posted by: Levi May 29 2004, 11:21 PM
On my engine the hose from the filler neck goes to the TB there is no pcv valve anywhere to be found nor can I find any reference to one anywhere in the Haynes manual..
What does the PCV look like and where does it go exactly
Posted by: SirAndy May 29 2004, 11:28 PM
What does the PCV look like and where does it go exactly
it's part of the filler top. take the whole (black) filler top off.
look where the vent hose connects, if you see metal mesh baffles, you don't have a PCV valve, if not you do have one. the valve is inside the filler top box.
Andy
Posted by: Levi May 30 2004, 12:10 AM
Well I'm not sure what your trying to tell me.
Yes I have the pcv aka the black box, at the top of it just below the filler cap I have the hose connector from there the hose connects to the big rubber boot that connects to the throttle valve.
I think the problem is this, there is air blowing out of the filler box, if I remove the filler cap air come blowing out the top very hard.
Maybe I have a problem with my filler cap??
Its got the bottom rubber seal and the o-ring, should the cap reduce the amount of air that can escape through the hose when the cap is on?
Posted by: skline May 30 2004, 06:42 AM
Here is a picture of a 1.8 liter oil filler box, notive the hose connection on the spout and not on the body of the filler box itself. The 1.7 and 2 liter had different injection and had it on the body of the box and not the filler spout. The next picture is the one from a 2 liter or 1.7 liter engine.
Attached image(s)
Posted by: skline May 30 2004, 06:43 AM
2.0 liter box
Attached image(s)
Posted by: SirAndy May 30 2004, 07:55 AM
what i am trying to tell you is that there are two versions of what skline calls the "2.0L Filler Box".
see picture below ...
you have to take the whole box off (snap on spring) and look at the underside.
where the red arrow is pointed you'll either see :
1. one or more holes with very visible metal mesh behind
2. a PCV valve
if you have the PCV valve AND the hose is connected to the TB AND it's only running good when you remove the cap, your PCV valve is STUCK!
Attached image(s)
Posted by: Bleyseng May 30 2004, 08:38 AM
That is a oil filler off a 75-76 Djet car. They also had the smog stuff.
On 73-74 2.0l cars the small tube welded to next to the filler is where the PCV is.
Geoff
Posted by: kwales May 30 2004, 09:15 AM
Levi,
Checked my 74 L-jet filler and it looks like the top one in sklines post. Opened the cap, looked in and there aint nutthin in that box. It's a straight shot through to the shiney aluminum of the case. As I recall, there is some mesh stuff in there around the edges of the box. A large diameter vacuum hose goes from the fill spout and attaches to the rubber manifold boot directly in front of the throttle body. Got a split in the hose or manifold boot?
If there was a pcv valve, I would put it in the middle of that big vacuum hose. Wasn't one on mine.
Nuttin in the factory parts catalog either. 1.8's don't have the Randelmutter fur plattenventil (disk valve for oil breather).
Ken
Posted by: Levi May 30 2004, 12:13 PM
Yup this is mine..... its still the 74 1.8 L-Jet..
Posted by: Levi May 30 2004, 04:37 PM
Checked my 74 L-jet filler and it looks like the top one in sklines post. Opened the cap, looked in and there aint nutthin in that box. It's a straight shot through to the shiney aluminum of the case. As I recall, there is some mesh stuff in there around the edges of the box. A large diameter vacuum hose goes from the fill spout and attaches to the rubber manifold boot directly in front of the throttle body. Got a split in the hose or manifold boot?
If there was a pcv valve, I would put it in the middle of that big vacuum hose. Wasn't one on mine.
Nuttin in the factory parts catalog either. 1.8's don't have the Randelmutter fur plattenventil (disk valve for oil breather).
Ken
Yup mine is just like yours,
Can you do me a huge favor and start your car and see if its blowing a ton of air out of the filler cap hole and the connector that the hose connects to, I'm thinking that that filler cap is suppose to reduce the amount of air going into the hose?
Posted by: mike_the_man May 31 2004, 11:34 AM
Sounds to me like you have a whole lot of blow-by from the engine, but what do I know?!? I don't think there should be that much air blowing out of the filler tube. I believe there was a thread not too long ago about venting it to a catch box of some type, or was that venting the heads? hmm 
, sorry, I probably just confused you more.
Powered by Invision Power Board (http://www.invisionboard.com)
© Invision Power Services (http://www.invisionpower.com)