LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Frustrated, intermittent hard start

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Old Jul 17, 2005 | 06:31 PM
  #1  
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Angry Frustrated, intermittent hard start

Ok, 94 A4. For a few weeks now, my card has intermittently cranked for an extended period of time before it actually turns over and runs. After driving it for a while, sometimes the car will shake at idle. It also idles at about 500rpm, was 700 before this issue came up.
Just did plugs and wires. Checked the fuel pressure, good. Ignition control module is good.
One possibility is, my intake elbow is torn. Just received my new 1LE elbow yesterday, but haven't installed it yet. Could that cause those symptoms?
If not, what would?
Thanks guys.
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Old Jul 17, 2005 | 07:50 PM
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yes, a vaccuum leak could definitely cause that.
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Old Jul 18, 2005 | 12:47 PM
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Thanks, I just got home and will be replacing the elbow as soon as my car cools down. I'll post an update.
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Old Jul 18, 2005 | 01:46 PM
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I's not a vacuum leak. It's a leak post MAF which will make the car run lean. Good chance thats the problem.
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Old Jul 18, 2005 | 08:01 PM
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Well, replaced the elbow and it has started right up 5 times, but that has been itermittent, so we'll see.
The idle smoothed out, and raised up about 50-75 rpms. It seems to accelerate a lot smoother, and be running a bit better.
Hopefully, everything's cool now .
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Old Jul 19, 2005 | 10:53 AM
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It might take a little more time before it's perfect. The fuel trims will need time to stabilize as well.
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