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Sounds more like a vacuum leak
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Posted by Shahn [Email] (more from Shahn) on Mon, 6 Oct 2003 05:35:52 Share Post by Email
In Reply to: Engine idle variable and stalling, David Johnson, Sun, 5 Oct 2003 12:35:43
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Check your vacuum lines for a major crack/split at connections or for a hose that fell off. I've had the exact same symptoms you've had, once it was the hose that goes to the boost guage-fell off at the fire wall, the other was at the carbon canister in the right front fender. Look carefully and follow the lines closely.
DI failure is more likely to be felt under high RPM's and high boost. It will feel more like a stuttering type miss and will be noticeable. Spark plugs will make or break your DI, make sure you are using the proper NGK's and check gap every oil change and replace every 10,000 miles or so.

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