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Gas in the oil, HELP :(
OK.
As Chuck said there are several things that may be at issue.
First, the injectors themselves only flow what the metering unit delivers to
them. If the spray pattern is good then the injectors are good.
Is the air flow plate centered in the cone when the plate if fully down so
it doesn't drag on the walls of the cone?
This would obviously keep the plate from dropping all the way down and
shutting off fuel flow.
Does the air flow plate drop to the bottom of the cone?
There is a stop underneath it that may be midadjusted and holding it up.
With the fuel pump running, if you try to lift the air flow plate, does it
lift freely for a small distance then hit resistance?
This would indicate the plunger is sticking. Not sure the cure for this
other than pulling the metering unit off and removing the plunger and trying
to clean things up and remove any gummy deposits.
Last, if the air flow plate is fully at the bottom of the cone and the
resistance is even (and the fuel flow from the injectors increases with any
movement of the air flow plate) then it may be simply that the mixture
adjustment screw is turned in too far. This would hold the fuel plunger up
and squirt fuel even with the air flow plate at the bottom of its travel.
BTW, this is an excellent way to adjust the mixture screw if you're
adjusting a CIS from scratch. With the engine stopped, the fuel pump running
and the air flow plate at the bottom of its travel adjust the mixture screw
until the fuel just stops flowing from the injectors. This should at least
get you a running engine.
Congratulations on getting the old crispy injector seals out. They can be a
bitch!
And, of course, everybody congratulates you on the inventive use of beer
bottles. Following right in Cathy's footsteps which is not a bad place to
be!!!
I'm thinking you're on the home run stretch!!
HTH
Dan
From: "Lexan Blanchard" <lexan_122874@hotmail.com>
To: <dan.bubb@gmail.com>
Cc: <scirocco-l@scirocco.org>
Sent: Tuesday, March 20, 2007 7:51 PM
Subject: Re: Gas in the oil, HELP :(
> OK, took some SERIOUS fighting, but I finally got the injectors out, and
> located a jumper wire that could hold a 16 amp fuse (that was a fiasco in
> itself). And, yes, the little O-rings were crispy rings, so that was some
> of the problem.
>
> So, I have discovered a new use for empty beer bottles: injector/cold
> start valve testing areas (man, the things you come up with in
> desperation)! Each injector and CSV got its own bottle so I could tell
> right away what was going on.
>
> As I figured, the CSV is good to go. No gas coming out.
>
> The injectors, on the other hand, ARGHHHHHHH! My mom even said, "Oh,
> you're frustrated, I'll come back later." All 4 sprayed gas when the fuel
> pump was jumped. They spray a beautiful cone-shaped pattern, but they
> shouldn't be spraying.
>
> So, guess this answers the question of why I have fuel in my oil. Now,
> what do you guys recommend? Does this mean I just need to adjust the
> mixture screw? Or do I need to put 4 new injectors on order? Or is this
> something completely different?
>
> Thanks again! Hopefully once this is right and the oil is changed, she
> will start. The fuel that came out of the injectors looked pretty clean
> and smelled like gas, so I may have finished cycling out the old stuff out
> of the lines.
>
> Lexan
>
>
>
>>From: "Dan Bubb" <dan.bubb@gmail.com>
>>To: "Lexan Blanchard" <lexan_122874@hotmail.com>
>>CC: scirocco-l@scirocco.org
>>Subject: Re: Gas in the oil, HELP :(
>>Date: Sun, 18 Mar 2007 07:13:49 -0400
>>
>>Gas in the oil pretty much needs to come from the injectors past the
>>pistons and piston rings, which as you note, isn't good.
>>This is either the cold start injector staying open or the regular
>>injectors injecting too much fuel.
>>What I would do is pull all of the injectors including the cold start
>>injector and aim them all into a pan. Then I'd jumper the fuel pump
>>relay, or if you don't have a jumper cycling the ignition key several
>>times every couple seconds should cause the fuel pump to run for a
>>short period of time for each cycle. Don't crank the engine! Just
>>cycle the ignition off and on.
>>
>>ANY fuel in the pan would indicate a problem. If you're not cranking
>>the cold start injector should not flow any fuel. And neither should
>>the regular injectors since there is no air flowing past the metering
>>plate.
>>
>>If you do have fuel in the pan, then the next step would be to
>>segregate the cold start injector from the regular injectors to
>>isolate where the problem is.
>>If it's the cold start injector then the Bentley has an excellent
>>section on diagnosing that.
>>If it's the regular injectors then it may be as simple as readjusting
>>the mixture screw counterclockwise although if that doesn't do it then
>>the problem would be more serious as Jim mentioned.
>>BTW, all this excess fuel getting pushed past the pistons into the oil
>>may also have the effect of somewhat hydrolocking the engine
>>contributing to your poor cranking performance.
>>Also, as Jim pointed out, it'd be good to change the oil before
>>actually running the engine again.
>>Keep us posted on what you find.
>>Dan
>>
>>On 3/17/07, Lexan Blanchard <lexan_122874@hotmail.com> wrote:
>>>Well, winter decided to return today, which ended any ideas I had to
>>>garden,
>>>or clean up the Purple Martin gourds (birds are here and calling me a
>>>slum
>>>lord for not taking care of their residences), so off to retrieve the
>>>Rocco
>>>from the meadow (where she was banned to last week).
>>>
>>>Still trying to finish cycling out the old gas, and figuring I am getting
>>>close. Also, I figured out what went pop-whooosh last weekend (loose
>>>hose
>>>clamp, hehe). Tried starting several times and ran the battery low
>>>(GOTTA
>>>find the short or bad wire, darn it).
>>>
>>>I have noticed a gassy smell every time I try to start, so, figured I
>>>better
>>>poke around a bit. Pulled dipstick (don't ask me why I started here),
>>>and
>>>the "oil" just dripped off. Figured this couldn't be good since when I
>>>looked at it last it was oil. Smells like gas, has consistency of gas
>>>(maybe a bit thicker) and color of fresh oil :( Even with my limited
>>>knowledge, I KNOW this isn't good.
>>>
>>>So, how is this much gas getting into my oil? What is my next step? All
>>>ideas and help are SUPER appreciated, as every day that passes puts her
>>>visit to Cincy less likely.
>>>
>>>Thanks all!
>>>Lexan
>>>'82 8V
>>>
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>>>
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>>>
>
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