GM Truck Club
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 3 of 3

Thread: need advise

  1. #1

    Default need advise

    Just picked up a 99 Escalade, 5.7 Vortec - 145K miles- it was displaying a P1345 (cam timing) & P0161 (rh/rr O2) code.
    Corrected timing, cleared codes and she ran much better.
    Full tune up... The old #'s 4 & 6 plugs looked dark & sooty... the rest were perfect.

    Noticed a bit of smoke when it first fires up... but not blue.
    O.K. - at first I'm thinking spider or injectors (pintles).
    But, it looks more like condensation. Oil is dirty, but is not milky (as is oil cap).

    PCV & vent cap have a bit milky residue though.

    Runs well, but a tiny bit of a rough idle. Decent power - now.
    Drove 30 miles, and set a different rear O2 & RH cat converter code.

    All codes are on the RH side, a bit of moisture inside the engine ventilation system, #4 & #6 plugs dirty

    I believe I have heard of intake gaskets doing this before... can anyone verify?
    Pulling intake this evening - would love some verification

  2. #2

    Enkeiavalanche's Avatar
    Join Date
    Apr 2010
    Piermont,NY, back in Northern NJ now, But may be in IL soon....


    have you cleaned the MAFS?
    08 Z71 Avalanche Mods to date: K&N CAI,Hellwig Swaybars and End Links, Corsa Sport Exhaust, Superchips Programer,IPCW LOF & 3rd brake light and tails, AMI Gas door,Show Hooks and Door locks, Enkei Wheels, with Pirelli tires, StreetScene Bowties, Grant Steering wheel,Muth signal mirrors,SSBC Big Brake kit,Huskyliner Mug gards,Floor mats and Hood shield, McGard Lug nuts and locks, Bedrug, Cervini's Ram Air hood,35watt HID Fog lights, Sylvania bulbs all around ZXE's Highs and Lows, WhiteNight Back up lights,Sirius and HD Radio, SnugTop sitting on deck now Got a Softopper on now,Tempress Boat Hatches.... New Bilstein shocks are on... New Mods coming soon..... X

  3. #3


    Inspected the MAF (no K&N thank goodness)

    Weird that its only on those 2 cylinders (4&6)
    Pintels look respectable, every intake port looks like there is fuel delivery
    Not much carbon build-up inside... gonna split the plenum tomorrow & clean iac ports & egr circuit

    No missfire or lean/rich codes, but every time I set a code, it's different, but always on RH bank.
    After I button it up, gonna replace the temp switch & the rh-rr O2 sensor anyway

    Just hoping an intake set might help - don't wanna pull the head

    Quote Originally Posted by Enkeiavalanche View Post
    have you cleaned the MAFS?

Similar Threads

  1. Pro Advise?
    By redreatta in forum Chevy C/K Truck Forum
    Replies: 14
    Last: 03-23-2012, 06:33 PM
  2. After market advise
    By bosoxx2004 in forum Chevy Truck Accessories
    Replies: 2
    Last: 02-12-2010, 03:48 PM
  3. NEED advise, 77 350....
    By 77chevy in forum GM Powertrain
    Replies: 1
    Last: 08-03-2009, 07:28 AM
  4. Advise
    By prodchevy in forum Performance & Fuel
    Replies: 9
    Last: 03-23-2008, 06:51 PM
  5. need advise about H.I.D.s
    By focker21 in forum Chevy Trailblazer Forum (GMC Envoy)
    Replies: 0
    Last: 09-19-2007, 09:58 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts