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Compression tester

The 6.5 uses a pretty standard glow plug size, so most any diesel engine compression tester will work. Beware as I have read the $30 one from harbor freight won't work in the 6.9/7.3L, and they use the same size glow plug as the 6.2/6.5 so chances are it won't work for them either.
 
Let me rephrase my post. I don't think i want to pay $269. dollars for a NAPA diesel compression tester i will only use once over the next ten years.
Is there anyone willing to sell me a complete compression tester guaranteed to work on my chevy 6.5 L TD ?
 
I use the Harbor Freight tester. It comes with a large assortment of adapters.
 
Some auto parts companies have a tool loan program where you pay for the tool, use it. Then when you return it they refund your money. Our local napa store does that here.
 
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