Jump to content

Help Im running outta Ideas....

DirtyRedScottsdale85

Recommended Posts

zach1990 Senior Enthusiast

zach1990

Posted
Posted
stop pissin around and do an exhaust pressure test in the o2 sensor after the cats ,if its higher than 3 ,they are plugged ,,,,thats how ya do it boysssssss

 

What is the name of the tool you use to do this?

 

Sent from my SGH-I927 using Tapatalk 2

 

 

NitroCherokee Enthusiast

NitroCherokee

Posted
Posted

What is the name of the tool you use to do this?

 

Sent from my SGH-I927 using Tapatalk 2

 

 

I always just used a simple Vaccum gauge, used the torch to put a small hole in the pipe just before the cat, shove the vaccum hose in the pipe and hold with a rag (to keep from burning yourself) and have someone start it. Really shouldn't see any "pressure" in the pipe.

 

 

Most of the time you can just start it with a small hole blown in the pipe and if exaust is coming out the small hole the exaust is restricted.

zach1990 Senior Enthusiast

zach1990

Posted
Posted

 

I always just used a simple Vaccum gauge, used the torch to put a small hole in the pipe just before the cat, shove the vaccum hose in the pipe and hold with a rag (to keep from burning yourself) and have someone start it. Really shouldn't see any "pressure" in the pipe.

 

 

Most of the time you can just start it with a small hole blown in the pipe and if exaust is coming out the small hole the exaust is restricted.

Alright figured if I get the time I may do this out of curiousity just due to the miles on this truck. Thank ya

 

Sent from my SGH-I927 using Tapatalk 2

 

 

DirtyRedScottsdale85 Enthusiast

DirtyRedScottsdale85

Posted
  • Author
Posted

Well today I replaced the cats with some 2 1/2 in pipe and changed the fuel filter. After watching the data stream it looks like I have a bad injector on 6 probably what caused the cat to clog up.... On another note the trucks loud as hell without them might have to replace the cherry bomb extreme with a 2 chamber muffler or a magnaflow

 

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • TrueBlue
      Transmission Temperature Hitting 220s

      By TrueBlue · Posted

      Thanks, so being a different beast altogether, anyone know what the "optimal" temp is for the 10L80/90 for proper shifting?
    • Grumpy Bear
      Some Assembly is Required

      By Grumpy Bear · Posted

      How many years have I pointed out every point in that link to the folks here and been avalanched with criticisms and outright hostilities at times? I ran counter to even the great CUSTOMBOSS and Lake Speed Jr and the half dozen experts on YouTube and in the final.....GM, Physics (Stribeck) backs that Grumpy old Bear.    Honestly, I never said a thing engineering hadn't studied silly and laid in concrete during WWII. But I'm old, the information is old and yet, the Laws of Physics are eternal.    Okay there is one exception. I vehemently disagree with their use of the word 'tolerances' when what it meant is "clearance".   The clearance is the distance between two objects. The tolerance is the degree of acceptable variation permitted in that clearance. I.E., piston to bore clearance is 0.004" with a tolerance of +/- .0002" so the clearance is in specification if it lies between 0.0038" and 0.0042". Cutting that 'tolerance in half has ZERO impact on lubrication requirements. Makes for more difficulty in manufacturing.  But a tighter clearance 'MAY'. Depends on finish. Anyway....   It's one of those statements made by people to make themselves look smarter than they are to convince people who are as un-enlighten as they seem to manipulate their behaviors. But hey, the blind leading the blind puts them both in the pit. 
    • Grumpy Bear
      Gas Prices

      By Grumpy Bear · Posted

      Out and about yesterday on a long Saturday drive I passed a lot of Shell stations. My preferred, so I pay attention. Lot's of small town Illinois so not six stations in three blocks like the city.    Everyone of them over a radius of say 100 miles had regular at $4.19 but one which was the one closest to home at $4.15. However Premium pricing varied greatly between 85 cents over regular to $1.50 over. I'm not counting the price of the station with the lowest regular so the reference is the same for the remainder and all within the same brand. However the spread discrepancy holds across all brands.     @txab, any thoughts on that? 
    • revrnd
      Future GMC Jimmy

      By revrnd · Posted

      What are your thoughts? The Chevy Blazer relaunch was an epic case of 'lunchbag letdown'. Jeep Wranglers and Ford Broncos stick out like a sore thumb.    The AI photos do not look like a 'retro version', but shrunken Tahoes. Get away from the 'futuristic look'. I've seen two concepts. One had rectangular headlight like a Rivian and the other way too big headlights (similar to a previous non-Wrangler SUV) should include dual round headlights like the early version.   If not this would look OK   At least it has GM styling (albeit the K2XX) A lot of the images floating around look like Bronco IIs or the current Bronco. Looking at the Broncos in my area (central Ontario, it seems to be a mix of 2 doors and 4 doors, 'mall rated' to ones that could go offroad.    I'm sure a AT4 and AT4X RPOs could be outfitted similar to a Rubicon if the braintrust understood the whole offroad scene. Crossing my fingers that if it does see the light that the front air dam/bumper doesn't extend below the center line of the tire...      
    • revrnd
      Silverado 4500-5500-6500 are they still being produced? Would have sold better as GMCs as well

      By revrnd · Posted

      I saw this news earlier this year:   https://theautowire.com/2026/06/12/gm-kills-off-chevys-biggest-silverado-trucks-as-sales-collapse-and-factory-fallout-spreads/

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...