924Board.org

dash16 · Joined: 22 Aug 2007 Posts: 255 Location: Cali Cali

Hello board,

my 924S has been sitting for about a year and a half while I was away and I just tried to start it. It cranked a few weak cranks and then stopped cranking, seemingly stuck.

I'm really concerned the timing belt had slipped, but there is no way I know to tell as I cannot turn the engine by hand either to see if the timing marks align.

Please advise how I can move forward with this. I trust the brilliant solutions this board can come up with! Thank you
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1987 Porsche 924S Black/Black. 5-spd.
Options: AFX C79 261 398 423 650 651 657

1987 Mercedes 190E 2.3-16 Cosworth Pearl Black/Black. 5-spd.

STUTTGART PREVAILS

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

what is the history of the timing belt?
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

dash16 · Joined: 22 Aug 2007 Posts: 255 Location: Cali Cali

I replaced it with a Gates Kevlar belt around 10K ago. Tensioned it legit myself

_________________
1987 Porsche 924S Black/Black. 5-spd.
Options: AFX C79 261 398 423 650 651 657

1987 Mercedes 190E 2.3-16 Cosworth Pearl Black/Black. 5-spd.

STUTTGART PREVAILS

Paul · Posted: Sat Jun 28, 2014 12:25 pm Post subject:

Have you tried to turn the motor a few degrees backwards? Starter may be jammed.
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

dash16 · Joined: 22 Aug 2007 Posts: 255 Location: Cali Cali

Paul · Posted: Sun Jun 29, 2014 12:34 am Post subject:

Remove the starter, check to see if it the bendix is jammed on the ring gear.

Pull the belt covers and check condition.

Check clutch operation.

Clean area near each spark plug of all debris

Pull plugs, squirt some clean oil into each cylinder, leave plugs out.

Put car in neutral

Turn crankshaft at front pulley with a long breaker bar.

Bent valves should not keep the motor from turning backwards a few degrees.
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

mehall · Joined: 15 Dec 2008 Posts: 191 Location: Richmond, MO

Have you checked the battery? 18 months will often kill even a new battery.

...unles you a trickle charger.
_________________
Mark

'87 White 924s manual
'94 Lexus LS400

www.kcws.org