924Board.org

Rboepple · Joined: 01 Oct 2018 Posts: 9 Location: Boise idaho

My name is Rick I'm new to workinh on porsches if you could help me out I have a 1978 924.Ok so here is what ive done checked spark checked the fuel pump its working, checked vacume all good all hoses are new the boot from the intake to the air meatering unit good and tight and fuel diz rebuilt . Now what I have observerd. When trying to turn the car over no start because it cant pull the aire meatering unit oppen. But if I lift it open than it starts I have to keep it open for it to run meatering unit isnt stuck when I crank the plunger is holding the unit down. I think its because there is to much presure I experimented with this I took the banjo from the cold start where it goes into it and bypassed it straight to the return hose after doing that it ran but with low presure so it was excessively rich I tested the cold start valve.12 v and it opened so I'm not sure why it's causing so much presure in the dizzy to hold down the meatering unit
_________________
78 924

KDJones2000 · Joined: 14 Sep 2010 Posts: 322 Location: Phoenix, AZ

Dude, buy some punctuation.

It is not worth the bother, if you aren't willing to take the time to make your post readable.
_________________
1987 924S SPEC car
Team Toofah Racing
1988 944 Turbo S

Rboepple · Joined: 01 Oct 2018 Posts: 9 Location: Boise idaho

Why would you bother getting on here to tell some one there gramer isnt so good thanks for your help....
_________________
78 924

morghen · Joined: 21 Jan 2005 Posts: 8880 Location: Romania

You messed up the dizzy rebuild and now its not giving out enough fuel.
Or in the process of rebuilding, you messed with the fueling adjustment screw and now you're either getting too much or to less fuel.
_________________
https://www.the924.com

Rboepple · Joined: 01 Oct 2018 Posts: 9 Location: Boise idaho

Ok thank you I'll pop it back off and order a rebuild and go threw it once more
_________________
78 924

Paul · Posted: Tue Oct 02, 2018 3:59 am Post subject:

You could also have a bad WUR (warm up regulator).

Before spending anymore money, get a Haynes manual and check your system and control fuel pressures using the proper CIS gauge set.

https://www.tooldiscounter.com/ItemDisplay.cfm?lookup=SAG33800&source=froogle&kw=SAG33800&gclid=EAIaIQobChMI5e7brejl3QIVCkNpCh3F7AkOEAQYASABEgIFW_D_BwE

https://www.partsgeek.com/gbproducts/HC/91-09066770.html?utm_content=HC&utm_term=1977-1982+Porsche+924+Paper+Repair+Manual+Haynes+80030+77-82+Porsche+Paper+Repair+Manual+1981+1978&fp=pp&gbm=a&utm_source=google&utm_medium=ff&utm_campaign=PartsGeek+Google+Base&gclid=EAIaIQobChMIxMKb8Ojl3QIVk7rACh2UTwF0EAQYASABEgI6rPD_BwE&ad=47433965052
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

morghen · Joined: 21 Jan 2005 Posts: 8880 Location: Romania

If the car runs when you hold the plate by hand then try increasing the mixture using a long allen key and turning clockwise, look in the haynes for mixture setting procedure.
Just give it half a turn and try starting it again, if it improves but not solves the situation, then another half a turn and so on.
_________________
https://www.the924.com

Ian89C4 · Joined: 01 Apr 2011 Posts: 561 Location: North Carolina

Agree with Morghen. I would also get a cis pressure tester ( or make one...a few how to's on the board). That way you can tell what your pressure is looking like...then you can diagnose the dizzy vs. the wur.

Good luck!
_________________
Ian Edgerly
North Carolina

Current:
1981 924 SCCA/ChampCar Weissach Race Car ("Serenity")
1987 924S ChampCar Endurance Car ("Der Weg")
1980 924 Euro ("Wahala")

Rboepple · Joined: 01 Oct 2018 Posts: 9 Location: Boise idaho

I appreciate the help guys. And today I realized that when I rebuilt the dizzy I didn't do the presure regulating neadl I remember the plunger was stuck good at wot so I wonder if the neadle could be stuck shut and causing to much presure holding the air meaturing plate down thoughts... And yes I will get a presure tester
_________________
78 924

Rboepple · Joined: 01 Oct 2018 Posts: 9 Location: Boise idaho

So I cleaned out the wur and cleaned out the dizzy car will run but very laybored I think its because the dizzy is leaking out fuel ive ordered a proper rebuild kit only thing I'm not sure if I can use a sealent or if it's just sapose to be all metal on metal
_________________
78 924

Fifty50Plus · Posted: Mon Oct 08, 2018 4:08 am Post subject:

Use Locktite 542 on both sides of the metal plate. Spread very thinly with the edge of a razor blade and don't block the tiny holes in the plate.
_________________
1979 924 NA race car
1982 924 NA race car - Sold
1982 924 Turbo almost a PoS
1981 924 Turbo a real PoS, new engine
1982 924 Turbo nice body, blown engine
1972 911 E race car - going to Vintage
Various 944s to become IT-S race car

Rboepple · Joined: 01 Oct 2018 Posts: 9 Location: Boise idaho

Ok thank you
_________________
78 924

Rboepple · Joined: 01 Oct 2018 Posts: 9 Location: Boise idaho

Also should I let it dry or put it straight togeather
_________________
78 924

Fifty50Plus · Posted: Tue Oct 09, 2018 12:59 am Post subject:

After you spread it (very thin on both sides) you can bolt the distributor together. There is curing time for the sealant after assembly - I believe it is 24 hours. I don't have the instructions handy.
_________________
1979 924 NA race car
1982 924 NA race car - Sold
1982 924 Turbo almost a PoS
1981 924 Turbo a real PoS, new engine
1982 924 Turbo nice body, blown engine
1972 911 E race car - going to Vintage
Various 944s to become IT-S race car

Rboepple · Joined: 01 Oct 2018 Posts: 9 Location: Boise idaho

Ok did porsche or bosch do this during assembly to keep them from leaking?
_________________
78 924