Problems with coolant system in my 1986 Gmc Sierra

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king foid

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Mike
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1986
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Gmc Sierra Classic
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406
Well, i connected my bottom hose to the intake manifold and top hose to the radiator, blocking off the water pump. The heat works now, but made a funny high pitched noise first turning it on. Thanks for all the help guys!! :cheers:
 

Georgeb

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Well, i connected my bottom hose to the intake manifold and top hose to the radiator, blocking off the water pump. The heat works now, but made a funny high pitched noise first turning it on. Thanks for all the help guys!! :cheers:

Glad to hear it!
 

1low4x4

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Another thing to check is freeze plugs. One may rust or crack, you won't see it because it forms like a stalagmite as it dries on the block, but It will constantly let air in, causing most of the issues you talked about. Had that on my blue truck
 

chengny

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That would be more like a stalactite - which starts at a high point and grows in the downwards direction. A stalagmite, on the other hand, begins to form from a low point and rises upwards.

A good mnemonic device: "Dust mites live in the carpet". And the carpet is low.
 

1low4x4

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Yes, I'm not here to argue the difference between the two. I kept trying to type stalactites but spell check kept changing it to stalagmite.
 

chengny

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Google was doing the same spell suggestion to me as well. Probably because I was trying to spell it "stalagtite". You'd figure they'd both start off the same?
 

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