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Spark plug torque on 91 Merc XR4? #13071120 02/22/19 10:28 AM
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Toxarch Offline OP
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I was changing the water pump in the 91 Mercury XR4 Black Max. Figured I would check the plugs and fog the cylinders since it hasn't been out in a while. I know i have torqued the plugs to spec in the past but don't remember what the spec was. I looked in my Clymer Manual and couldn't find it. I know it's in there... somewhere. Anyone know what the spark plug torque specs are? I'm going to use a paint pen and write it inside the cowl this time.


In space, nobody can hear you scream for ice cream.
Re: Spark plug torque on 91 Merc XR4? [Re: Toxarch] #13071187 02/22/19 01:22 PM
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TLW Online Content
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20 ft. lbs....

Re: Spark plug torque on 91 Merc XR4? [Re: TLW] #13071290 02/22/19 02:43 PM
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boatman025 Offline
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bump 20ft lbs


Hughes Marine
3855 Osage Lane
Wylie ,Texas
Re: Spark plug torque on 91 Merc XR4? [Re: Toxarch] #13071500 02/22/19 05:21 PM
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Toxarch Offline OP
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Thank you both very much.


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