351W shakes

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Oct 12, 2003 | 01:40 PM

alan v.

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351W shakes

my 351W in my 89 F`50 started shaking the other night, and i thought it was the motor mounts, so I changed them and it still does it. Is my engine internally or externially balanced? Or does any one know if it could be anything else. It does it in park or in gear.

Oct 12, 2003 | 03:01 PM

90f150moneypit

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From: Still under the hood in O

Sounds like a missfire if it did this suddenly.

Pull the plugs to find which cylinder(s) are causing it. It may just need a complete tune up.

Oct 12, 2003 | 06:54 PM

alan v.

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the engine sounds like it is running smooth and is not missing, but the truck has a vibration to it.

Oct 12, 2003 | 08:52 PM

circledirt

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From: kansas

Check condition of harmonic balancer. If rubber came apart or it spun on crank center that could cause vibration.

Oct 13, 2003 | 09:49 AM

Kemicalburns

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Joined: Jul 2002

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From: Bend,OR

sounds like either a plug wire has been crossed or your timing is way off. it possible the balancer is shot but i would check this other stuff to .

late