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post #1 of (permalink) Old 01-23-2004, 04:58 PM Thread Starter
 
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violent shake after plugs and wires

I recently did a tune up on my jeep and now it shakes violently under acceleration. if i accelerate slowly there is no shake, and i can rev it fine when it is just sitting there. conicidently after a very short test drive, i parked it and it was dripping oil out the front balancer seal at about a drip a second where i ran it before i went for a test drive and it didnt leak. I gapped all the plugs before installing them. this is a chevy 383.
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post #2 of (permalink) Old 01-23-2004, 05:26 PM
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Re: violent shake after plugs and wires

You might have gotten plug wires crossed 1-8-4-3-6-5-7-2. Or you got a bad plug or wire.

Pull the wires one at a time and see if there's one which doesn't make the problem worse.

Since it shows up under acceleration my guess is a bad plug or wire. To find it you'll probably have to drive it on each disconnected wire.

Don't know about the oil leak. Must be a bad front seal, but it's odd that it would fail that suddenly.
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post #3 of (permalink) Old 01-23-2004, 06:23 PM Thread Starter
 
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Re: violent shake after plugs and wires

well i checked the wires, and they are all correct. i will test the wires and plugs tomorrow. with replacing the balancer seal, do i have to remove the timing cover or will it be possible to replace it without pulling it off?
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post #4 of (permalink) Old 01-23-2004, 06:30 PM
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Re: violent shake after plugs and wires

It's been nearly 40 years since I messed with a SBC, but I think the seal can be replaced with the TC in place. Surely someone knows for sure.

Yes, and don't call me Shirley.
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post #5 of (permalink) Old 01-23-2004, 06:48 PM
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Re: violent shake after plugs and wires

harmonic dampener seal can be replaed with out pulling timing chain cover. this is good because timing chain cover can not be taken off without removing oil pan. so pull the dampener and replace that seal!
post #6 of (permalink) Old 01-23-2004, 06:54 PM
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Re: violent shake after plugs and wires

before i can offer any real advice on the shake i need to know a little more. is this a hard shake engine missing. because i have driven around running on 7 and never experienced a violent shake. just a noticeable miss and loss of power. what i want to hear is does the jeep shake from engine sputtering or just shake.
post #7 of (permalink) Old 01-23-2004, 09:56 PM Thread Starter
 
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Re: violent shake after plugs and wires

when you step on the gas it feels as if the whole jeep is shaking. i didnt have any problems with it before i swapped plugs and wires
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post #8 of (permalink) Old 01-23-2004, 10:16 PM
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Re: violent shake after plugs and wires

New doesn't mean good.

Find which one it is by pulling wires one at a time.
Then swap in an old plug wire for that one.
Still miss?
Have a look at the plug.
Sometimes when putting it in you miss the hole slightly and get dirt and grease on the plug - it won't burn off. If yes, just clean it.
If no, try putting in an old plug you took out to test. Not all new plugs are good.
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post #9 of (permalink) Old 01-23-2004, 10:19 PM Thread Starter
 
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Re: violent shake after plugs and wires

alright, i'll start my tests tomorrow morning since i dont have a garage (college campuses should start providing them). anyone have any tips for removing a balancer without a balancer puller.

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post #10 of (permalink) Old 01-23-2004, 11:53 PM
 
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Re: violent shake after plugs and wires

Buy/borrow/rent the balancer puller. Or else be ready to buy a new balancer. Not something to try to pry off.

Ken Linzmeyer
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