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  1. MalcDogg

    P0300 code after replacing parts

    This is what I found the steering sensor is off alignment go get a wheel alignment
  2. MalcDogg

    P0300 code after replacing parts

    I have no idea why the push rods was bent I replaced a lifter then was still getting a misfire so something told me to check the rods they was fine when I replaced the lifter and took it for a test drive
  3. MalcDogg

    Low Oil pressure still!!!!

    I took off the valve covers and I don’t have the updated valve covers Order them today The oil pressure starts between 20-40 then after driving for 30min it goes below 20 never gets to zero I do get a lot smoke from tail pipe on start up that’s it goes away after 5min engine is running fine...
  4. MalcDogg

    Low Oil pressure still!!!!

    Starts high but after driving for 30min it goes low never to zero
  5. MalcDogg

    Low Oil pressure still!!!!

  6. MalcDogg

    Low Oil pressure still!!!!

    This is a new thread
  7. MalcDogg

    Low Oil pressure still!!!!

    Ok thx
  8. MalcDogg

    Low Oil pressure still!!!!

    Yes has a new screen and sensor
  9. MalcDogg

    Low Oil pressure still!!!!

    I have 08 Tahoe 5.3L Changed the Oil pressure sensor, Pick up tube, High volume oil pump installed and pressure relieve valve and still getting low pressure anyone got any info? I did notice the pan was dirty I’m reading about the oil filter to use the AC Delco filter
  10. MalcDogg

    P0300 code after replacing parts

    I installed new valves and seals I should’ve replaced the guides too The valves got bent from hitting the tops of the pistons do to bent push rods
  11. MalcDogg

    P0300 code after replacing parts

    Now that I got everything done and new parts I’m getting smoke from tail pipe a lot of smoke on start up looks white but really light blue color and smells like burning oil but then goes away and come back after sitting idle then I can hear an internal backfire any ideas on that? But the...
  12. MalcDogg

    P0300 code after replacing parts

    Turns out a few valves was bend and valve seals was damaged leaking oil in the cylinders causing random misfires
  13. MalcDogg

    P0300 code after replacing parts

    No I didn’t do I delete and I used all new parts
  14. MalcDogg

    P0300 code after replacing parts

    Blue smells like oil
  15. MalcDogg

    P0300 code after replacing parts

    Well here’s an update Went back into the engine replaced the valves and am the seals everything seems to be working fine a get a misfire then it goes away a lot of smoke coming from the tail pipe when I sit and then take off seems like it’s burning away the carbon build up from me cleaning...
  16. MalcDogg

    P0300 code after replacing parts

    I think I may have figured this out but because of rain and no garage I’ll have to wait I noticed 2 of the valves is not flushed with heads and notice some marks on the top of the pistons it’s dumping oil in the cylinders causing the misfire and blue smoke on start up so I think I’m gonna...
  17. MalcDogg

    P0300 code after replacing parts

    I scan it and it keeps saying P0300 check cats O2 sensors
  18. MalcDogg

    P0300 code after replacing parts

    I’m gonna do a compression test today I got everything out back together and still get a random misfire I’m also getting a U 0101 code But I did forget to mention I had some cheap cats and replaced them they was hollow after taking them off I’m thinking the muffler could be causing this aswell...
  19. MalcDogg

    P0300 code after replacing parts

    the spark plugs is black not all of just about 3 or 4 them some oil on them from inside the cylinders I’ll be putting everything back together today hopefully no misfiring all vacuum hoses and lines is good no leaks there
  20. MalcDogg

    P0300 code after replacing parts

    I replaced the lifter guides aswell I also installed new spark plugs and still getting a misfire I’m thinking it could be the heads not torqued correctly because of some cheap bolts for eBay that didn’t go in easy I’m thinking that could be the problem spark plugs is getting wet
  21. MalcDogg

    P0300 code after replacing parts

    Hello everyone Let’s just start 2008 Chevy Tahoe Got a misfire code P0307 found out it was the lifter so I replaced all the lifters, cam, spark plugs, head gaskets, intake gaskets, timing chain and sprockets, also replaced the cats and 02 sensors Now it’s throwing P0300 codes and engine...
  22. MalcDogg

    Need Help misfire after replacing lifter

    Ok here’s an update: I took everything apart and started over cleaned the heads checked the push rods and come to find out I didn’t torque the heads correctly I put everything back together with new bolts and torque them one of the intake gaskets was broken as well so everything is working fine...
  23. MalcDogg

    Need Help misfire after replacing lifter

    Ok so here’s an update today I change the fuel injectors I notice the o rings was damaged and some of them was bend at the top so I changed them all I forgot to torque the head bolts so did that as well so New head gasket New injectors New spark plugs New wires New intake gaskets Got some...
  24. MalcDogg

    Need Help misfire after replacing lifter

    This is what I got for cylinder 4 a
  25. MalcDogg

    Need Help misfire after replacing lifter

    This is what I got for cylinder 4

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