12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

boost hits a wall.

Thread Tools
 
Search this Thread
 
  #1  
Old 04-14-2009, 12:50 AM
89silverbullet's Avatar
Diesel Wrench
Thread Starter
Join Date: May 2008
Location: Dallas, texas
Posts: 692
Received 29 Likes on 22 Posts
Default boost hits a wall.

i used to be able to hit 32-35psi with no prob. to day i felt like the truck did not have the grunt it usually does so i put it to the floor and could only hit 25 psi and it just felt like the fuel just wasnt there... how many mile do you guys go before changing your fuel filter? could this be a injector taking a dump? i plan on checking boost elbows and such tomorrow but i dont think i could hit 25 if i had a leaking elbow... or am i wrong on that to.

thanks in advance guys. its my everyday grinder so i would like to catch a small thing before it gets big.
 
  #2  
Old 04-14-2009, 12:57 AM
jamiewood's Avatar
Site Sponsor - Southern Diesel Extreme
Join Date: Oct 2008
Location: Fayetteville AR.
Posts: 107
Received 5 Likes on 5 Posts
Default

It could be fuel. But my bet is there is a boost leak somewhere. Maybe a boot blew off partially. Try pressurizing the system to check.
 
  #3  
Old 04-14-2009, 06:13 AM
Whit's Avatar
Site Mascot
Join Date: Mar 2007
Location: Why-homing
Posts: 16,010
Received 940 Likes on 701 Posts
Default

boost leak...........check all the boot clamps
 
  #4  
Old 04-14-2009, 06:36 AM
BAD ASS RAM's Avatar
Diesel Wrench
Join Date: Mar 2009
Location: clifton,tn
Posts: 592
Received 5 Likes on 5 Posts
Default

yeo boost leak,i hit 27 with leaking boots
 
  #5  
Old 04-14-2009, 08:14 AM
Johnny Cetane's Avatar
Diesel Bomber
Join Date: Mar 2007
Location: Behind You
Posts: 6,191
Received 492 Likes on 383 Posts
Default

Yep. Check all of your clamps. Take an extra hard look at the lower boot on the right side. It's just close enough to part of the core support to get a small hole in it.
 
  #6  
Old 04-14-2009, 12:00 PM
89silverbullet's Avatar
Diesel Wrench
Thread Starter
Join Date: May 2008
Location: Dallas, texas
Posts: 692
Received 29 Likes on 22 Posts
Default

Thanks guys! I just need to find work on it early because here in San antonio we are hitting high 90's
 
  #7  
Old 04-14-2009, 03:57 PM
Beets's Avatar
Diesel Enthusiast
Join Date: Jan 2009
Location: New Albany Indiana
Posts: 194
Received 7 Likes on 7 Posts
Default

Originally Posted by 89silverbullet
Thanks guys! I just need to find work on it early because here in San antonio we are hitting high 90's
ok man now that just makes me mad i live in southern Indiana and if it was in the high 90s i would be loving it. i would be on the lake. it is lke 50* here for the high.
 
  #8  
Old 04-14-2009, 04:35 PM
89silverbullet's Avatar
Diesel Wrench
Thread Starter
Join Date: May 2008
Location: Dallas, texas
Posts: 692
Received 29 Likes on 22 Posts
Default

add crazy humidity in to it and it feel like its in the 100's
 
  #9  
Old 06-03-2009, 12:31 AM
katycummins97's Avatar
Newbie
Join Date: Apr 2009
Location: Katy, Texas
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default

when you lay into the throttle does it pour out black smoke?
 
  #10  
Old 06-04-2009, 01:36 AM
89silverbullet's Avatar
Diesel Wrench
Thread Starter
Join Date: May 2008
Location: Dallas, texas
Posts: 692
Received 29 Likes on 22 Posts
Default

Originally Posted by katycummins97
when you lay into the throttle does it pour out black smoke?
no. its still runs clean...ish hard full throttle in fourth and smoke pours. i changed the fuel filter and air filter and have had no problems
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Un4givn
12 Valve 2nd Gen Dodge Cummins 94-98
10
04-27-2015 01:58 AM
chaoticape
Ford Powerstroke 03-07 6.0L
2
01-04-2015 05:35 PM
ash23k
Ford Powerstroke 03-07 6.0L
1
12-30-2014 08:31 PM
Tsgbk9
5.9 Liter CR Dodge Cummins 03-07
6
12-23-2014 11:54 AM
offroad00
12 Valve 2nd Gen Dodge Cummins 94-98
24
10-23-2014 03:28 PM



Quick Reply: boost hits a wall.



All times are GMT -5. The time now is 11:37 PM.