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Join Date: Oct 2006
Location: Raleigh, NC
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I just saw this thread, and its good to see that you got everything back in order. For the future, I have a spare stock euro fuel dizzy, with sensor plate etc. if this happens again and you need a temporary solution.
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John A.
1979 Porsche 930: 3.4L, SC cams, Twin plug, Leask WUR, Custom SSI turbo exhaust, Tial WG, K27HFS, and we can't forget the Zork (short lived depending on my homeowners assoc.)
05 Boxster S: For the Track.
06 Dodge Ram 2500 Power Wagon: Tow Vehicle
Old 08-28-2007, 07:07 PM
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Quote:
Originally Posted by sand_man View Post
Thanks to all for the input, advice, and patience!

The car is back to it's smooth ol' self!

I ended up pulling the fuel head. These things really aren't meant to be disassembled and/or tampered with (unless you're Porschephd)...so I proceeded with care and only cleaned things...know your limits. I think it's possible the workings were just sort of gummed up where the head sits on the metering housing. Also it's possible some shiat came out when I removed the regulator side of the head. Once I re-installed it and pressurized the fuel system, the sensor plate acted with much more sensitivity...the car started right up

As others pointed out, the sensor plate does have some resistance when the fuel is flowing.

MANY THANKS TO ALL!
You are scaring me man .......



...... I hope mine never does that ...... at least you got it fixed and we all benefit from seeing what the problem was and how you fixed it.
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82 Porsche 930 Euro, black, 31K miles.
Factory stock other than k27 turbo, B&B headers, GHL exhaust, Tial F40, 1 bar wastegate, MSD 6A ignition, 8" and 9" Fuch upgrade, H4 Xenon headlamps and a 930S steering wheel.
Old 08-30-2007, 04:44 AM
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I would not be afraid of the fuel head. It is a close tolerence machined piece that just needs to be kept perfectly clean. If you are meticulous and keep a clean work area it is no problem.
I know there are a couple of threads showing one being rebuilt here on the BBS.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 08-30-2007, 05:56 AM
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Question

Forgive the dumb question, but is the fuel head the top part of the intake that houses the flapper and has all the semi loose screws with the springs on them ... and the metering plate is underneath, or am I way off track?

I just asked because I always wondered if those screws were supposed to all be loose and if so, how loose?
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82 Porsche 930 Euro, black, 31K miles.
Factory stock other than k27 turbo, B&B headers, GHL exhaust, Tial F40, 1 bar wastegate, MSD 6A ignition, 8" and 9" Fuch upgrade, H4 Xenon headlamps and a 930S steering wheel.

Last edited by Maxx1; 08-30-2007 at 01:48 PM..
Old 08-30-2007, 01:43 PM
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Quote:
Originally Posted by Maxx1 View Post
Forgive the dumb question, but is the fuel head the top part of the intake that houses the flapper and has all the semi loose screws with the springs on them ... and the metering plate is underneath, or am I way off track?

I just asked because I always wondered if those screws were supposed to all be loose and if so, how loose?
Man, the PO of your car was about the most limp wristed guy that ever worked on a car! LOL.

Just kidding. I don't know if those screws are supposed to be loose or not.
Old 08-30-2007, 04:00 PM
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Quote:
Originally Posted by Maxx1 View Post
Forgive the dumb question, but is the fuel head the top part of the intake that houses the flapper and has all the semi loose screws with the springs on them ... and the metering plate is underneath, or am I way off track?

I just asked because I always wondered if those screws were supposed to all be loose and if so, how loose?
Actually in the workshop manual, there is a page about those screws and associated springs. There is a specific method for tightening them. I'll have to dig it out.
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back in the saddle: '95 993 - just another black C2
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Old 08-30-2007, 04:15 PM
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