After Seeing The Pictures I'd Like To Change My Diagnosis
The black stuff appears to be all through the cooling system - impeller to thermostat. Bet this is the same stuff that is cloging the manifold. Looks like the side plate (by the alternator) needs to come off too.
Here's what to do: Soak the theromstat in vinegar. If vinegar gets rid of the black stuff then acid should clean out your cooling system. If vinegar doesn't remove the black crud you'll have to find a solvent that does.
Best of luck.
TRUE GRIT
The black stuff appears to be all through the cooling system - impeller to thermostat. Bet this is the same stuff that is cloging the manifold. Looks like the side plate (by the alternator) needs to come off too.
Here's what to do: Soak the theromstat in vinegar. If vinegar gets rid of the black stuff then acid should clean out your cooling system. If vinegar doesn't remove the black crud you'll have to find a solvent that does.
Best of luck.
TRUE GRIT
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