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wobbs
Joined: 17 Mar 2007
Posts: 1
Location: Rotherham UK
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 Posted: Sat Mar 24, 2007 2:52 am Post subject: Back on the road but very sluggish 924 |
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Hi Guys,
just got the 924 through its MOT its not been on the road since 1999
just waiting for a log book to arrive then i can put some rent on it.
The car is running very sluggish i would not put the power to anymore than a 1.1 fiesta it runs fine ticks over perfect etc. there just aint no go,
so where do i start?
Do i just send it somewhere local Sheffield) to sort, (any recommendations) or one of you guys maybe,
but firstly,
i'll put in a new air filter OE or any other, which do you recommend?
It has new plugs in it as it was tuned but only for emissions.
it will have a blood transfusion next week,
other than that i dont know where to begin.
Andy |
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924RACR
Joined: 29 Jul 2001
Posts: 9107
Location: Royal Oak, MI, USA
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| Posted: Sat Mar 24, 2007 3:27 am Post subject: |
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They can often be sluggish if let sit for a while. I'd suspect clogs/restriction/junk in the fuel system; may need to check the warm-up regulator even, for proper function... likewise fuel injectors for clogging/spray pattern, fuel pressures, etc.
I hope you got rid of the old fuel and put in fresh, possibly with a bottle of Techron?
_________________
Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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!tom
Joined: 28 Aug 2006
Posts: 1941
Location: Victoria, BC Canada
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| Posted: Sat Mar 24, 2007 4:26 am Post subject: |
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Don't forget fuel filter.
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78 924 NA
5-lug |
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-nick
Joined: 16 Nov 2002
Posts: 2699
Location: Cambridge, MA
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| Posted: Sat Mar 24, 2007 5:00 am Post subject: |
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Check the ignition timing. If it's running retarded, then it will feel very gutless.
_________________
1980 931S
15psi boost, MS-II, EDIS, 951 IC, custom intake, Ford 5.0L throttle body, Forge BOV, WB o2, G31 w/LSD, 964 wheels, 968 rear sway, Bilsteins, 200# Welt. springs. A laptop, and a partridge in a pear tree.
1991 964 C4 Cabriolet |
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Ozzie
Joined: 12 Mar 2005
Posts: 4448
Location: Townsville, Qld. Australia
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| Posted: Sat Mar 24, 2007 7:13 am Post subject: |
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If its an auto you will not have much go either.
The gears in an auto are high and you have good cruising speed but poor acceleration.
Euro cars are tuned to 10 deg BTDC.
Check injectors, pressures etc as mentioned in the other posts.
_________________
Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance |
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Mike924
Joined: 12 Aug 2004
Posts: 2601
Location: IoW UK
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| Posted: Mon Mar 26, 2007 5:27 pm Post subject: |
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| Ozzie wrote: | | Euro cars are tuned to 10 deg BTDC. |
...but you might want to knock it back to 6° or 7° if you're running on standard unleaded.
Who tuned it for emissions? Some garages get carried away and set the mixture too lean, which also makes the car sluggish. The 'offical' CO reading is meant to be 1% - 2%, but if you set it to nearer 2.5% - 3%, you'll still be well inside the 4% MoT limit for this age of car and the performance will be a bit more sprightly (don't expect miracles, though!)
_________________
1985 Porsche 924 'Lux', Kalahari Beige (my ex)
1993 Porsche 968 Coupe, Midnight Blue, 6 spd
'There is no substitute for a little grease under your fingernails.' - Chrenan, 924board.org |
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Tue Mar 27, 2007 1:09 am Post subject: |
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What year is the 24? If it's older, you may also want to make sure the timing is advancing, distributor vaccuum lines hooked up, etc.
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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