Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

backfire and stalls

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by K5Dan, Mar 10, 2003.

  1. K5Dan

    K5Dan 1/2 ton status

    Joined:
    Nov 15, 2002
    Posts:
    583
    Likes Received:
    0
    Location:
    Port St. Lucie,Fl
    ok heres what i got week ago code 33 and 43 changed map sensor,knock sensor.havent had the codes again yet still have the backfire on cold start till it warms up.also it stalls out on occasion when i acc. and let off quickly.any suggestions /forums/images/graemlins/1zhelp.gifthanks oh yeah it's an 87 tbi
     
  2. 4GUNZ4X4Z

    4GUNZ4X4Z 1/2 ton status

    Joined:
    Aug 10, 2000
    Posts:
    3,459
    Likes Received:
    0
    Location:
    Mustang, Oklahoma
    Check your timing.
     
  3. BIG*RED

    BIG*RED 1/2 ton status

    Joined:
    Mar 14, 2003
    Posts:
    1,094
    Likes Received:
    0
    another thing that you might check, is if you have a smog pump, the divertor valve on the smog pump...my truck back fired and threw flames about 8inches long out my tail pipes when i would "get on it" and let off...turns out my divertor valve was bad..30bucks at the part store and it has never back fired since
     

Share This Page