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Posted on Jan 10, 2010
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I own a '93 6.5 l diesle and my turbo is not building boost

I own a '93 6.5 l diesle and my turbo is not building any boost, so i took my intake tube off going into the turbo and checked the impeller and it checks out but my waste gate is not opening. so i temp. wired it half open and tried to see if it would work, and my truck started to shutter after getting up to about 3000 rpm. Would that be my pdm pump? and if i do have to get my pump rebuilt should i upgrade it too allow for more horsepower?

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You have a mech wastegate. install a homemade turbo master, almost a free job. look here for the best info dieselplace.com.
deejaaa

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  • Posted on Jan 10, 2010
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Sounds like the turbo is not turning freely or you have a large leak somewhere inline. The waste gate should stay shut until it builds the set amount of boost. Can you normally hear it building boost? if so can you hear any air leaking while driving?

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