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Discussion Starter #1
06 cargo van 103 000 miles. I think I may have a bad piston. Anyone have an idea what a shop might charge me? How many hours? Is it worth it to repair it?

Gary
 

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What makes you think you might have a bad piston ?
 

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It's a monster of a job that necessitates engine and transmission removal. I would lift the van body off first. And yes, why do you suspect bad piston?
 

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Discussion Starter #4
It makes a noise similar valve clatter that has heralded cracked piston from my 62 Corvair on. Noise get worse when accelerating. Injectors have about 40K on them. I would be very happy for a cheaper diagnosis.

Gary
 

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I would start with the easy things first to check.

Injector balance rates ?

Flexplate ?
 

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Do a search on this page on bad piston, the symptoms are much worse than you describe.
 
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