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roybert
Joined: 06 Feb 2009 Posts: 38 Location: Dublin, Ireland
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Posted: Thu Oct 09, 2014 8:21 am Post subject: Rough Running 924 |
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I have a 83 Porsche 924 2.0 that I cant seem to get running right. Its lumpy on idle and its not pulling very well. It rev's out but feels like its off, its definitely slower than my other 924's. When she warms up full at idle its almost like its timing is slightly off. I checked for vacuum leaks and it looks good.
Any ideas? I have a quick video of it below (although its hard to tell in the video)
http://youtu.be/rGvZe5f-SO0 |
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Rasta Monsta

Joined: 12 Jul 2006 Posts: 11733 Location: PacNW
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Posted: Thu Oct 09, 2014 9:56 am Post subject: Re: Rough Running 924 |
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| roybert wrote: | | I checked for vacuum leaks and it looks good. |
Simply not possible to check visually under ANY circumstances. . .sorry. _________________ Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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Ian89C4

Joined: 01 Apr 2011 Posts: 561 Location: North Carolina
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Posted: Fri Oct 10, 2014 12:37 am Post subject: |
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I would try resetting all of your timing. It sounds like your ignition timing is off a little bit and your not burning all the AF mixture in that chambers. Make sure that you ignition timing is set so that the distributor rotor is pointing at the scribe mark on the distributor.
Check your plugs too, they may have gone south on you.
I would try that first so at least you can rule out timing issues, then go after the daunting task of figuring out vacuum leaks.
cheers _________________ Ian Edgerly
North Carolina
Current:
1981 924 SCCA/ChampCar Weissach Race Car ("Serenity")
1987 924S ChampCar Endurance Car ("Der Weg")
1980 924 Euro ("Wahala") |
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roybert
Joined: 06 Feb 2009 Posts: 38 Location: Dublin, Ireland
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Posted: Fri Oct 10, 2014 1:52 am Post subject: |
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| Ian89C4 wrote: | I would try resetting all of your timing. It sounds like your ignition timing is off a little bit and your not burning all the AF mixture in that chambers. Make sure that you ignition timing is set so that the distributor rotor is pointing at the scribe mark on the distributor.
Check your plugs too, they may have gone south on you.
I would try that first so at least you can rule out timing issues, then go after the daunting task of figuring out vacuum leaks.
cheers |
Cool I`ll put in a new set of plugs, I dont know when they were done last as I am the newest owner. Thanks for the help. I`ll update on my progress! |
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musicalannette
Joined: 21 Feb 2012 Posts: 413 Location: UK
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Posted: Sat Oct 11, 2014 2:21 am Post subject: |
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could be timing or running lean, check your mixture isnt set for too much air _________________ I KNEW white wall tyres were invented by Americans .....just not at Boeing.... to be fitted on the 737..... |
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roybert
Joined: 06 Feb 2009 Posts: 38 Location: Dublin, Ireland
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Posted: Wed Nov 05, 2014 11:52 pm Post subject: |
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| Just a follow up guys, turns out it was a gunked up fuel filter. Fuel pressure was down by about 50%. Replaced it for 40 euro and we are good to go! Thanks for the help! |
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Ian89C4

Joined: 01 Apr 2011 Posts: 561 Location: North Carolina
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Posted: Fri Nov 07, 2014 12:50 am Post subject: |
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Excellent!! Glad when its an easy fix.
Cheers  _________________ Ian Edgerly
North Carolina
Current:
1981 924 SCCA/ChampCar Weissach Race Car ("Serenity")
1987 924S ChampCar Endurance Car ("Der Weg")
1980 924 Euro ("Wahala") |
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roybert
Joined: 06 Feb 2009 Posts: 38 Location: Dublin, Ireland
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Posted: Mon Nov 10, 2014 9:31 pm Post subject: |
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Now onto replacing the steering rack Once that's done that's most of the major work done. I can do the minor stuff and the car should be good to go! |
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Fasteddie313

Joined: 29 Sep 2013 Posts: 2595 Location: MI
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Posted: Tue Nov 11, 2014 11:42 am Post subject: |
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| roybert wrote: | | Replaced it for 40 euro and we are good to go! Thanks for the help! |
YIKES!!
i hope that included labor.. _________________ 80 Turbo - Slightly Modified |
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