cracked block help

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Feb 23, 2004 | 07:57 PM

electricshock

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New User

Joined: Apr 2003

Posts: 22

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From: Ogden, Utah

cracked block help

I think I have a cracked block. The engine ran rough and I was getting alot of white smoke out of the exhaust when it got warmed up. There are no wet spots under the truck except under the tail pipe when the engine is running.
I have the top of the engine tore down and am not seeing anything on the cylinder walls. If there is a crack is it going to be something noticable or just a hair line fracture?
I have never seen a cracked block so I am not exactly sure what to look for. The head gaskets and oil look fine. thank you for any help.

Feb 23, 2004 | 08:48 PM

bremen242

Logistics Pro

Joined: Jan 2002

Posts: 3,739

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From: GANS

Sounds like you might have had a head gasket problem. However, the best thing to do it to have your block magnafluxed for cracks. That is the only way to tell for sure.

Feb 23, 2004 | 09:19 PM

redv92c

Junior User

Joined: Jan 2004

Posts: 78

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From: Kentucky Go Cats

They are hard to see a machine shop can find it,if it is the cylinder thats cracked they can sleev it.I have had 2 350s that had to be sleeved no problems out of either one just make sure it goes to a good machine shop

Feb 24, 2004 | 04:43 PM

Chris_ce

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Joined: Apr 2003

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From: Indiana

start by have your heads checked good chance it will be one of them if not at least you know their good. Also it's a lot easier to get the heads to the shop than it is the block

Feb 24, 2004 | 08:46 PM

jmalecek

Senior User

Joined: Dec 2003

Posts: 105

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From: Jasper, GA

Also look at the top of the pistons....If you have a piston that is very clean on top compared to the others, you may have a cracked head leaking antifreeze into the cylinder.

Jamie