924Board.org

dragraptor690 · Joined: 04 Jun 2013 Posts: 15 Location: charlotte,nc

Hey guys im new here my name is nate and i live in charlotte nc, i know this is in the wrong topic but couldnt find a sec for the normal 924 and sorry about it if it upsets anyone, but my 924 starts and runs fine at idel but has bad throttle responce and when i rev the engine it revs slow and and when i hit around 3k rpm it missis and my tech jumps around also standing behind the car ur eye will burn really bad. Idk were to start ill have more info tomorrow
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96 trans am ws6 clone, 02 active autowerke stage 2 bmw 330ci, ls6 swap silverado, 78 porsche 924

gerben1986 · Joined: 13 Mar 2008 Posts: 232 Location: The Netherlands

Hi,

The first thing you should check is if you're not leaking any air.
So check the hose from the airintake to the throttlebody, check the carter breather hose and things like that.

Because the car really doesn't like that.
What I hear from you is that your car is tuned fine when Idle, so then fuel/air mixture is fine, when there is more air or fuel added it goes wrong.
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911SC - 1980

dragraptor690 · Joined: 04 Jun 2013 Posts: 15 Location: charlotte,nc

Alright cool im picking up some carb cleaner to spray around the vacuum lines today. Ananything else i should look into causing this problem?
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96 trans am ws6 clone, 02 active autowerke stage 2 bmw 330ci, ls6 swap silverado, 78 porsche 924

dragraptor690 · Joined: 04 Jun 2013 Posts: 15 Location: charlotte,nc

Well i was looking at some of the vacuum and when i touched them they broke in half lmao. So picking up some new hoses. Hoping this will fix my problem
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96 trans am ws6 clone, 02 active autowerke stage 2 bmw 330ci, ls6 swap silverado, 78 porsche 924

dragraptor690 · Joined: 04 Jun 2013 Posts: 15 Location: charlotte,nc

Well the vacuum is fixed as far as i think.i took the cis off to clean and the arm moves free and i cleaned that so it moves even better now but what i noticed is the fuel part were the injecter lines aare the part its like a button that the arm pushes up sticks reaally bad. Sorry i dont know the names of the parts very well first time ever seeing this type of fuel system let alone workin on one
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96 trans am ws6 clone, 02 active autowerke stage 2 bmw 330ci, ls6 swap silverado, 78 porsche 924

dragraptor690 · Joined: 04 Jun 2013 Posts: 15 Location: charlotte,nc

Hey its the fuel dizzy. on the bottom the part the arm pushes up sticks what do i used to clean the fuel dizzy
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96 trans am ws6 clone, 02 active autowerke stage 2 bmw 330ci, ls6 swap silverado, 78 porsche 924

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

Does the plunger move at all? If it does then let it come down a little bit and pull it out of the fuel distributor, have something ready to catch fuel as there will be quite a bit.

What usually makes it stick is if there has been fuel sitting in the dizzy for quite some time and the varnish has gummed it up. What you can do is clean the plunger very well with a lint free cloth and some carb cleaner (or non chlorinated brake cleaner). Spray a good amount of carb cleaner up into the fuel dizzy to try and get the varnish out. keep cleaning until the plunger moves up and down freely without any sticking.

Do not take apart the fuel dizzy, they are very hard to clean and get back together so that they do not leak. You can try if you want, but I was disappointed when I tried to rebuild my first one.

If you get the car running after cleaning the plunger, I would say run a bottle of fuel system cleaner through it and that may help things out.

Good luck.

Any Pics??
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Ian Edgerly
North Carolina

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

dragraptor690 · Joined: 04 Jun 2013 Posts: 15 Location: charlotte,nc

Yes i already cleaned it and it moves alot better now and i got some seafoam to fun in thebrake booster and fuel.
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96 trans am ws6 clone, 02 active autowerke stage 2 bmw 330ci, ls6 swap silverado, 78 porsche 924

dragraptor690 · Joined: 04 Jun 2013 Posts: 15 Location: charlotte,nc

Well guys i did a vacuum test today! Bad news idel was 15-17 psi wot 0 decell goes to 23

if i recall this means worn piston rings..... So now idk what to do i dont see the point to rebuild 110hp motor... So idk what motor whould be a easy swap. Any ideas
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96 trans am ws6 clone, 02 active autowerke stage 2 bmw 330ci, ls6 swap silverado, 78 porsche 924