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Eturbo924 · Joined: 09 Nov 2002 Posts: 2212 Location: Londonderry NH

Ok I read some where here that you turn the fuel mixture screw all the way in and then back it out 2.5 turns as a base starting point.

So... which way is all the way in?

Clockwise all the way until it stops... or counter clockwise until it stops?

Then opposite out 2.5 inches

I understand that clockwise makes it richer.. counter lean.

Just need to know which way is "all the way in. I turned and turned clockwise but never seemed to stop. So backed it back out...

Now I am sure I screwed it all up. Ha

Need to spend more time.

Help......

Eric

Eturbo924@yahoo.com
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Smoothie · Posted: Wed Aug 15, 2007 11:40 am Post subject:

Clockwise all the way, then back out 2.5 turns sounds about right for the idle speed setting starting point.
For the A:F mix, try this -
Begin with the A:F setting too lean (turned counterclockwise), then:
With engine off, jumper the fuel pump relay to activate the fuel pumps, then while listening closely to the fuel distributor, turn the a:f adjustment clockwise (without applying any downward pressure that'd affect the neutral position of the air metering plate), just until you hear fuel starting to rush through the fuel dist. Then reverse the adjuster 1/2 turn (counterclockwise).
Having the injectors pulled and each sitting in a seperate container will allow you to do this without diluting your oil with fuel. -Otherwise, turn the adjuster back the 1/2 turn quickly so the injectors only spray very briefly..
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Eturbo924 · Joined: 09 Nov 2002 Posts: 2212 Location: Londonderry NH

Ok so...

With the fuel pumps running as long as I do not lift the fuel plate the injectors do not fire?

So if the setting to to rich the injectors will shoot with the pumps running, but if set properly they will not?

If so cool. I will pull all the injectors and put them in clear bottles. I can inspect the fuel pattern then as well.

Weird thing is that the car was running but then I shut it off and began turning the screw clockwise. I turned it at least 5 turns and it was still going. Does this seem right?
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Smoothie · Posted: Wed Aug 15, 2007 2:40 pm Post subject:

Mike924 · Joined: 12 Aug 2004 Posts: 2601 Location: IoW UK

Tiny · Joined: 10 Apr 2006 Posts: 502 Location: London, UK

+1 to the Mikester

Tiny
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Eturbo924 · Joined: 09 Nov 2002 Posts: 2212 Location: Londonderry NH

Ok so a dozen turns end to end but I am to turn it all the way to one side (clockwise) and then back it out 2.5 turns? I know it is no where near that now.

Seems like it will burn it self up.

Ah the fun of it all.

I like the... "heck it is a bad piece... take it out and replace it" kind of work so much better Hahahaha

Well I guess I will just remove all the injectors from the head, put them in bottles and then start turning the screw until they either shut off... or turn on... depending on what they are doing now.

Then it should be in the right ball park.
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1982 924
1992 968
2003 C4S
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Smoothie · Posted: Wed Aug 15, 2007 11:42 pm Post subject:

Eturbo924 · Joined: 09 Nov 2002 Posts: 2212 Location: Londonderry NH

Aha!

Light dawns over marble head!

Got it. See was not getting the whole turn the allen screw and not the screw in the throttle body.

BINGO!

Ok so will lean it out and then turn it until the injectors fire away. Thanks
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1982 924
1992 968
2003 C4S
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Eturbo924 · Joined: 09 Nov 2002 Posts: 2212 Location: Londonderry NH

Dang this car is going to drive me to drink!

Ok another couple of questions.

I adjusted the alen screw at the fuel disty until it was to lean. Then slowly started turning it clockwise to get the injectors to fire. When I turn on the fuel pump there is an initial surge and a blast from the injectors but then no flow. Is this where I stop... if I keep going maybe another 1/4 turn the injectors start to drip. Then if I go another 1/4 to 1/2 they start to gently spray.

Am I looking for the actual spraying or the dripping or the first blast?

Of course I am sure I contaminated the oil. I only pulled the first and 2nd injectors. Then when I started it the car was smoking nicely. Can I assume this is from the fuel making the oil to thin?

Man this is a pain!

At least the cat is no longer glowing. Seems the fuel mixture was just way to rich before.
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Mike924 · Joined: 12 Aug 2004 Posts: 2601 Location: IoW UK

You're looking for the injectors just starting to spray.

When they open they should do so cleanly and not drip. The fact that you are seeing drips is a sign that your injectors are clogged/knackered. Something to worry about at a future date - it shouldn't cause any extra problems for setting the mixture.

Don't worry about the smoke at this stage either. Once you get it running and the smoke persists, then you can worry.

The injectors can spary quite a bit of fuel in just a few seconds when they get going. You really don't want all this sloshing around the cyclinders if it's not being burnt. I'd pull the remaining two injectors for the spray onset test.
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Eturbo924 · Joined: 09 Nov 2002 Posts: 2212 Location: Londonderry NH

Yeah that is what I figured to do. Pull the other two. Actually have had three of them out already.

Ok so has to be spraying continuous. Not just the initial burst.
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1982 924
1992 968
2003 C4S
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Mike924 · Joined: 12 Aug 2004 Posts: 2601 Location: IoW UK