Notices
GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

Broken inner spring

Thread Tools
 
Search this Thread
 
Old 08-30-2011, 04:50 AM
  #1  
Mod with training wheels
Thread Starter
iTrader: (16)
 
smokeshow's Avatar
 
Join Date: Feb 2009
Location: Detroit
Posts: 7,740
Received 204 Likes on 139 Posts
Default Broken inner spring

After figuring out it wasn't a tune or injector problem, I thought I'd post it up here. I found a broken inner valve spring on my PRC 675 duals. Truck has had a misfire ever since the dyno session. Could this be the cause? Its #7 exhaust.

Old 08-30-2011, 04:57 AM
  #2  
Baltimore Whore
iTrader: (95)
 
Mangled03gmc's Avatar
 
Join Date: Apr 2004
Location: In a van DOWN BY THE RIVER
Posts: 16,820
Likes: 0
Received 2 Likes on 2 Posts
Default

Yep think that could prob be your issue...
Old 08-30-2011, 05:14 AM
  #3  
TECH Fanatic
 
06Sierra2's Avatar
 
Join Date: Feb 2010
Location: el paso, tx
Posts: 1,245
Likes: 0
Received 0 Likes on 0 Posts
Default

that could def be it. cam specs and how many miles were on the springs?
Old 08-30-2011, 05:49 AM
  #4  
Mod with training wheels
Thread Starter
iTrader: (16)
 
smokeshow's Avatar
 
Join Date: Feb 2009
Location: Detroit
Posts: 7,740
Received 204 Likes on 139 Posts
Default

222/226 .602/.605 114

Only around 4000 miles. Broke the springs in religiously. Must be a bad egg.
Old 08-30-2011, 06:31 AM
  #5  
Notorious BIG
iTrader: (6)
 
Holty's Avatar
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 1,744
Likes: 0
Received 0 Likes on 0 Posts
Default

damn it i just bought those springs!
Old 08-30-2011, 07:52 AM
  #6  
I have a gauge for that
iTrader: (42)
 
Atomic's Avatar
 
Join Date: Jan 2006
Location: Huntsville, AL
Posts: 16,261
Received 391 Likes on 261 Posts
Default

and everyone hates on the patriots....
Old 08-30-2011, 07:55 AM
  #7  
Notorious BIG
iTrader: (6)
 
Holty's Avatar
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 1,744
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Atomic
and everyone hates on the patriots....
AND the Comp's
Old 08-30-2011, 02:06 PM
  #8  
Mod with training wheels
Thread Starter
iTrader: (16)
 
smokeshow's Avatar
 
Join Date: Feb 2009
Location: Detroit
Posts: 7,740
Received 204 Likes on 139 Posts
Default

Pick your poison lol. Any progress on your misfire problem, Holty?
Old 08-30-2011, 02:27 PM
  #9  
Notorious BIG
iTrader: (6)
 
Holty's Avatar
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 1,744
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by smokeshow
Pick your poison lol. Any progress on your misfire problem, Holty?
Just purchased new springs to see if i have a "weak" spring or something. basically just grasping at straws and throwing money/parts at it. i have no clue....
Old 08-30-2011, 02:47 PM
  #10  
Mod with training wheels
Thread Starter
iTrader: (16)
 
smokeshow's Avatar
 
Join Date: Feb 2009
Location: Detroit
Posts: 7,740
Received 204 Likes on 139 Posts
Default

Haha, I feel ya. I'm more or less at that point too...you've spent way more time on yours though. Gonna do a compression test later to see if there is a fried exhaust valve. Have you checked that yet?


Quick Reply: Broken inner spring



All times are GMT -5. The time now is 10:31 AM.