99 F350 7.3 - NO BOOST

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#16

01-21-2019, 09:36 AM

JOHN2001

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Quote:

Originally Posted by HD Rider

Holy cow! What did those turbos eat for lunch?
Besides themselves I mean.

The first one I have no idea, it was only a couple years old. The second one was a bad rebuild, it had 3 miles on it with no more then 15 psi of boost. I was going to take it up to 60 and boom out the fender wheel most of it went

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#17

03-15-2019, 01:49 PM

JoeLawrence73

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Quote:

Originally Posted by JoeLawrence73

My 7.3 currently has no boost. The truck has a brand new Garrett Powermax turbo, an 8 month old S&B cold air intake, Industrial 75+ injectors. It was chipped but I took that out and installed an Edge Evolution CS2 tuner. The tuner did nothing impressive so I sent it back. Before I removed the tuner I restored the setting back to stock. I now have NO boost and I am blowing black smoke like crazy and I cannot get the truck over 25 MPH. I think I have a leak because I was only getting about 12 lbs of boost before. At this point I would be happy with 12 because when I say NO I mean ZERO. I also changed the EBP sensor. I have not cleaned or replaced the EB line yet but I doubt that would totally kill boost. When the powermax went on it had a new wastegate so I do not think that is the issue. I removed the tube from the wastegate and there was no difference.

I am at a total loss. Please help.

I wanted to give you an update. This has been a struggle but the boost problem is solved. I had a major leak where the passenger up pipe met the exhaust manifold. Many hours later that has been resolved. I also found the wastegate was not moving very well so I lubed that up. There was also a small hole in the hose that runs from the map sensor to the turbo..

Now on to a new problem. The truck will not start after sitting for 30 minutes unless its jumped. Batteries are less than a year old I getting 12.5 - 12.6 volts. I need to jump it so I can test the alternator. It is one thing after another with this thing.

Thank you to all who offered advice.

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#18

03-15-2019, 11:15 PM

HD Rider

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Thanks for the update.
Hope you get this new issue resolved quickly and inexpensively.

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#19

03-16-2019, 10:43 PM

burnthelight88

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need to know the voltage while cranking. 12.5 sitting still without being connected to a charger isn't a bad start, but its not the most important number in relation to power...

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