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Certified Rennwerker
Join Date: Oct 2002
Location: Kansas
Posts: 1,906
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Sure but I am not up on 83's but will see if you have the same MAF...On the MAF housing you should see a square black box w/a connection. Look to the left and down and there should be a 1/2" aluminum plug or cap flush with the intake housing. See if you can locate that first then we can go from there. The cap is put there at the factory to keep DYI'ers from messing with the preset rich/lean mixture. See what you can find and get back to me. Sman
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PCA " I've been everywhere, done everything......just can't remember any of it!" 
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06-21-2003, 09:39 AM
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Certified Rennwerker
Join Date: Oct 2002
Location: Kansas
Posts: 1,906
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Here is where to look....
 Sman
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PCA " I've been everywhere, done everything......just can't remember any of it!"
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06-21-2003, 01:02 PM
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Registered
Join Date: Mar 2003
Location: dfw, texas
Posts: 1,137
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it seems to me that since the problem is so specific that it isnt a distibutor cap or rotor problem. if you take off the cap you should be able to easily see if the contacts look good or not.
also if you start it at night and look under the hood and see any sparks arcing, that would indicate a problem
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84 944 Non Alcoholic |
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06-21-2003, 05:02 PM
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This is a shot in the dark but if you had put larger plug wires on and left the old coil in maybe the plugs aren't getting enough volts to spark properly. I remember something about this from high school physics.
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1984 944 N/A 1996 Golf Gl Drive fast. Take chances. If you can't dazzle them with brilliance, baffle them with bull. - W. C. Fields |
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06-21-2003, 07:58 PM
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Registered
Join Date: Feb 2001
Location: Viera FL
Posts: 5,642
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Check the fuel lines from the tank to the primary
AFJuvat
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Es geht nicht darum wie schnell man faehrt, sondern wie gut man schnell fahren kann. Ihr Brunnen der nutzlosen Porsche Information |
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06-21-2003, 08:19 PM
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Writer/Teacher
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fuel lines are fine.
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Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
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06-21-2003, 08:27 PM
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Registered
Join Date: Jan 2003
Location: New York
Posts: 891
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Quote:
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Tom Early '85 944 |
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06-21-2003, 09:03 PM
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Certified Rennwerker
Join Date: Oct 2002
Location: Kansas
Posts: 1,906
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All true however when these engines wear out and have high mileage the DME isn't capable of adjusting the air/fuel mixture. It will only adjust within it's peremeters. "Ideal" is set at new engine and will only be able to set ratio to a degree but once the motor is worn the rich/lean settings are out of the range of the DME and needs adjusted at the mixture screw under the plug cap. The cap is placed there for keeping the DIY'ers from adjusting it. Take the cap off and hook up the gas analyizer at the exhaust tip and get the 02 readings then you can adjust the screw according to the exhaust reading results. Make sense?! Sman
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PCA " I've been everywhere, done everything......just can't remember any of it!"
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06-22-2003, 08:47 AM
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1984 Porsche 944 2.5L
2007 Porsche Cayman S
The Viridian Falcon
SOLD! -- The Purple Pig
SOLD! -- Mighty Mouse
SOLD!! -- Alpine Wolf
