White plugs
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Elder User
Joined: Dec 2010
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From: Geneva,Ohio
White plugs
I have a 94 ranger 4.0 I noticed the spark plugs are turning white haynes man says could be intake manifold vac leaks I see gasket problems are common so im just gonna change them for giggles it also has the 4.0 famous tick can I fix this by changing pushrods??
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Joined: Sep 2003
Posts: 7,016
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From: SoCal
If you have such a leak in the intake manifold as to cause the spark plugs to go white, the engine would be running badly. And you would trigger a check engine light from the engine computer.
I hear that the ticking noise is from the rocker arm wear due to insufficient lubrication getting to the tip area. The difference in length is very small, so I don't know if you can get pushrods in such small incremental differences.
I seem to recall that the old Cologne engines may have adjustable cups in the rocker arms, but I don't know if the more recent versions have them.
I hear that the ticking noise is from the rocker arm wear due to insufficient lubrication getting to the tip area. The difference in length is very small, so I don't know if you can get pushrods in such small incremental differences.
I seem to recall that the old Cologne engines may have adjustable cups in the rocker arms, but I don't know if the more recent versions have them.
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