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Re: Engine Missing/Running Rough
[Re: fury4speed]
#723258
06/14/10 02:18 AM
06/14/10 02:18 AM
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Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
Striving for excellence
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Striving for excellence
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
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Spend a few dollars on one of those diagnostic testers at Harbor Freight. Test the resistance of the plug wires. An old timer told me this trick. I have found even NEW wires to have too high resistance to fire properly! Aim for no more than 1.5 ohms of resistance. I have also heard of guys waiting until dark to check things. Have a buddy open the hood and watch the engine as you are inside doing a light power brake....not enough to spin the tires, just load the converter a little. If there is ANY sign of light coming from any part of the wires, you have found a problem. I had an off idle miss in my Frankenduster awhile back. The coil was bad in my case, but it also had a vacuum leak. I had changed the secondary spring months before and didnt tighten the screws to the pod quite enough.
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Re: Engine Missing/Running Rough
[Re: 440_ci]
#723260
06/14/10 12:03 PM
06/14/10 12:03 PM
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Joined: Jan 2003
Posts: 25,200 Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Thoughts are that your engine is running on alternator current and the battery either needs a good charge and connection cleaning or replacing. When the brakes or signals are on you are drawing the alternated current down to a point where there is not enough to properly fire the engine because of low battery voltage.
Clean it, if it's Dirty. Oil it, if it Squeaks.
But: Don't fix it, if it Works!
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