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Symptoms when timing belt jumps teeth?

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Old 03-19-2003, 10:48 PM   #1
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Default Symptoms when timing belt jumps teeth?

Ok, my car's been running really crappy lately and I can't figure out why. Here are the symptoms

1. Car runs really pitch black rich... if I rev it up in my driveway I get a big black streak behind my exhaust

2. Random CEL 43 codes, "Fuel Delivery System Malfunction"

3. Car is noticeably sluggish, and has no power above about 4000... it starts detonating soon thereafter.

5. Car dies randomly (may be a seperate electrical problem, but I'm not sure, the ECU may be getting completely confused)

6. And the clincher... I checked my timing a while back and it looked as though it was advanced into the stratosphere... way past the last white mark, I'm not sure how to gauge the numbers for sure, but if the red mark is 16 I would estimate it was around 20-22 degrees. I pulled it back to about 15 and now the car idles like crap, surges up and down and it sounds almost like it's misfiring.

So what's the diagnosis? Did I slip some teeth on the timing belt? I haven't had a chance to jack it up and check TDC on the pulley and cam gear, but I will be doing that tomorrow.

[EDIT]: Also, just for good measure... I'm running the Greddy SOHC turbo kit on a D16Z6, with DSM 450's and VAFC hack for fuel management. I haven't ever been able to get the hack running right, but it may be for this very reason.

[Modified by M-EJ1, 11:56 PM 3/19/2003]
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Old 03-20-2003, 07:55 AM   #2
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Default Re: Symptoms when timing belt jumps teeth? (M-EJ1)

well the lack of power when you rev would be a sign of a slipped belt, but im not sure about the black smoke.
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Old 03-20-2003, 09:12 AM   #3
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Default Re: Symptoms when timing belt jumps teeth? (tilt)

If it is a slip tooth, take off the belt. Line up to tdc, also you can take off the crank pulley and line up the gear to the block, just to make sure everything is lined up.

Running a skip tooth may bend the valves, which can cause rough idles.
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Old 03-20-2003, 10:40 AM   #4
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Default Re: Symptoms when timing belt jumps teeth? (tilt)

if you jump enough teeth, car wont start
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