Boost Gauge Install Problem

[johnmoore]

Installed a boost gauge on my 2002 HO today. Started the engine up and had a zero reading on the gauge. Obviously I've done something wrong. For installation I removed the 3/4" NPT plug that was just behind the fuel filter and right before a factory sending unit of some sort. Was that the right plug to remove? Could I have tightened the crush fitting too tight? I tried to make sure it was just snug not REAL tight. Any tips appreciated.

 

[KatDiesel]

Did you actually drive it at all... and still get 0 reading?



At idle, and even revving the engine in nuetral (on stock turbo) you will see 0 boost. You won't build boost until you load up the engine abit and get the turbo spinning.



Take it around the block and see what you come up with.

 

[johnmoore]

Originally posted by KatDiesel

Did you actually drive it at all... and still get 0 reading?



At idle, and even revving the engine in nuetral (on stock turbo) you will see 0 boost. You won't build boost until you load up the engine abit and get the turbo spinning.



Take it around the block and see what you come up with.

No I didn't try that as I was worried that there was a problem. I will head out and see what happens. Of course "around the block" for me is about 15 miles!

 

[Nemies]

In theory, over-tightening the fitting could crush the line. As long as it's tightened snuggly, you should be okay. Also, yup, that's the right plug to remove. From what I understand, if you got the wrong one, you'll have coolant all over the place.



Boost was the first gauge I ever put on my truck, so I was real nervous when I took the rig for a drive. I got to 2nd gear, and was slowly accelerating, and I saw the boost needle lightly rise up off "0". I was so happy. And then I floored it, and the boost came right up.

 

[johnmoore]

Originally posted by Nemies

Boost was the first gauge I ever put on my truck, so I was real nervous when I took the rig for a drive. I got to 2nd gear, and was slowly accelerating, and I saw the boost needle lightly rise up off "0". I was so happy. And then I floored it, and the boost came right up.

Just got back from my "trip around the block" and am happy to report that all seems to be working OK. As I got on it out on the highway I noticed the needel moving up. Just before I shifted into 6th the RPM's were around 2500 and the boost gauge was on 20 lbs. So I guess I was worried about nuttin. Thanks to all for the help.

 

[KatDiesel]

Originally posted by johnmoore

Just before I shifted into 6th the RPM's were around 2500 and the boost gauge was on 20 lbs. So I guess I was worried about nuttin. Thanks to all for the help.

20lbs of boost. . on a stock truck. . perfect. Sounds like your good to go now with your boost gauge. Enjoy watching it

 

[Gary - K7GLD]

What puzzles ME, is that these 24 valve engines have these small 9 or 12 cm turbo housings that are SUPPOSED to bring on the boost super quick - compared to the older 12 valve 16-18 cm jobs - yet my new truck has to get up near 2000 rpm before boost and power comes on with a sudden rush like a 2 stroke dirt bike... I also thought one of the later Cummins claims to fame was their broad, flat HP/torque curve - THAT sure doesn't seem to be the case either... Not unhappy, or knocking the truck, just puzzled...



Now that I have the Comp installed, things might get a bit better, but my OLD truck sure wasn't as "peaky" on accelleration as the new one seems...