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Registered
Join Date: Sep 2008
Location: kENT UK
Posts: 16
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928 not reving
Hi im in the process of buying a european 1982 928 4.7ltr auto, it has one problem, it will not rev, the owner mechanic says it could be a fuel pressure regulator, any ideas? cheers, Darren uk
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Old 928 Guy
Join Date: Oct 2005
Location: Maryland
Posts: 408
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does it idle?
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1990 C2 Cabriolet Guards Red ![]() '81 928 Zinnmetallic Project Car (sold) ![]() '87 944na Maraschino Red Metallic (sold) ![]() |
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Registered
Join Date: Sep 2008
Location: kENT UK
Posts: 16
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I belive so, im going to buy the car in a week or so, got it really cheap, through a buddy who runs a porsche workshop, original 90,000 miles full service history etc, £1100 ($2200) and he is throwing in a 3lt 911 sc motor strippedown for my 911, so ill run it up when im home
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Old 928 Guy
Join Date: Oct 2005
Location: Maryland
Posts: 408
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I assume it has L-Jet? Seems like a good place to start is vacuum lines..if any of them are original they are certainly rotten...and probably leaking....and the fuel pressure regulators are connected to vacuum lines.
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1990 C2 Cabriolet Guards Red ![]() '81 928 Zinnmetallic Project Car (sold) ![]() '87 944na Maraschino Red Metallic (sold) ![]() |
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Network Native
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
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82 Euro is the older style injection, CIS or Kjet. There are two models a 4.5L and the S with 4.7 and 300 hp. Does not rev could be anything, if its the fuel distributor or WUR it gets expensive fast.
Whats the motor ID or the VIN? |
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Architecture & Porsche's
Join Date: Jan 2006
Location: Austin, Texas
Posts: 3,189
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I had a Celica back 20 years ago that suddenly wouldn't rev: was the fuel filter. Just a thought.
There's an '88 Countach down the street at a shop that wouldn't rev: made 220rwhp on the dyno. CDI igntion was fried: replaced: made 425rwhp. ![]()
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Porsche Club Racing National Scrutineer '89 Andial 951 '82 928R '74 911 RSR 3.6 |
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Network Native
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
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No real point in getting too focused on revving, look over the whole car and make a plan for restoring it.
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Registered
Join Date: Sep 2008
Location: kENT UK
Posts: 16
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the vin no. is wpozzz92zcs841106 hope this helps, here are some piccies.
![]() ![]() ![]() Last edited by Retrobuggy; 09-30-2008 at 01:57 PM.. |
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Network Native
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
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Very nice, thats a Euro S, 300 hp, and no sunroof? Very nice. Is it a 5 spd or auto?
This is a car well worth doing it right, good luck. |
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Registered
Join Date: Sep 2008
Location: kENT UK
Posts: 16
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Thats good to know, the car is an auto, white leather. Are these quick, only driven my 3ltr SC 911?
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Registered
Join Date: Jan 2007
Posts: 11,758
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Yes they are quick and fast.
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Registered
Join Date: Sep 2008
Location: kENT UK
Posts: 16
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Great, just need to get the old girl home, and sort out the engine problem, but first i must finish my new kitchen install and my oil pipes on my 911, thanks for the advise.
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Registered
Join Date: Jan 2007
Posts: 11,758
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There are some inline screens after the fuel filter that are designed to protect the CIS unit. I haven't a clue as to where they are, but they do clog up, and can be the cause of your problem. David Tassineri over at Rennlist dealt with this last year, he could probably tell you what they found.
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Registered
Join Date: Sep 2008
Location: kENT UK
Posts: 16
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Cheers, this will help in my quest
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Registered
Join Date: Sep 2008
Location: kENT UK
Posts: 16
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Cant beleive ive just bought another fuel guzzler, especially as we pay £6 ($12) a gallon
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Registered
Join Date: Sep 2008
Location: kENT UK
Posts: 16
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Cant belive ive just bought another fuel guzzler, especially as we pay £6 ($12) a gallon, but its weekend fun.
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Registered
Join Date: Jan 2007
Location: Alaska
Posts: 55
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Check the easy stuff first, if it is not reving then perhaps the linkage is disconnected at the throttle body.
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Heidi... '86 928S #0223 {Isoch} Garnet Red Metallic/Burgundy (crispy) Helmut '86 928S #1396 {Droop} Guards Red/Slate Gray Beth.. '86 928S #2641 {Isoch} Garnet Red Metallic/Burgundy Stage III Supershark Nearing 500HP Zelda.. '86 928S #2698 {Droop} Meteor Metallic/Burgundy |
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Network Native
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
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When you get it home, first thing I would do is clean out the fuel system, drain the tank etc.
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