Question about 1981 Ford F 100

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Would a blown headgasket cause lost compression

I have a straight 6, 300 the oil was'nt changed for years,the ports are clogged for drainage, ended up with 11qts of oil in it. Now can this blow the head gasket and cause the first two cly. to lose compression. And maybe even burn the valves?

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Well its like this.
if indeed the oil ports through the head through the bolck and down into the oil pan then indeed the engine is going to be oil starved.
if its oil starved for any durations the pistins will begin to melt.causing compression to be lost.
head gasket is the least of your worrys here.
the head gasket is going to survive a lot longer than the pistons in an oil starve situation.
thank goodness its an inline six.
these are very simple to fix.you might want to pull the sparkplugs and look at the tips to see if you can see melted aluminim on them.
you can also do a compression test to verify comp loss.if theres no compression you will have to pull the head anyway ifs its the gasket or piston.now if there was a preexisting head gasket condition yes it could be causing the two cyl to exchange compression.but a head gasket will not be caused by oil stave.

hope this helps
thank you
jm

Posted on Jun 18, 2009

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