1999 isuzu rodeo will not stop misfiring, changed alot on it and now i need help
10

Asked by river29 May 14, 2015 at 12:25 PM

Question type: Maintenance & Repair

i have a 1999 isuzu rodeo and i have changed all that i know to stop this misfire.  it will
miss under a load and just driving highway speeds, it also backfires sometimes.  i
have changed the timing belt tensioner pully all 4 o2 sensors egr valve and cleaned it,
replaced the injector o rings, fuel pressure regulator, all spark plugs and all coil packs,
fuel filter and fuel pump. we also just did a compression test on it and the psi was all
pretty similar, the lowest was 110 and highest was 150.  i just need help on what to do
next because i cant handle it anymore.  thanks

3 Answers
10

river29 answered 8 years ago

what would it sound like if the lifters were clicking. i do hear something when accelerating but i dont know what it is.. we did the wet compression test after the dry. and the numbers did come up but not considerably. 1. 140 2. 130 3. 140 4. 140 5. 110 6.150 and that was the dry numbers. number 5 went up to 130 when doing the wet test

Mark helpful
10

river29 answered 8 years ago

but would the lifters cause a misfire randomly that doesnt throw any codes.and i will try the marvel mystery oil and seafoam this weekend

1 people found this helpful.
Mark helpful
10

river29 answered 8 years ago

ok i will try and let you know.. thanks, if you think of anything else to try let me know

Mark helpful

Your Answer:

Related Questions

Own this car?

Share your experience with others.
Write a car review

Shortcuts

Search Maintenance & Repair Questions

CarGurus Experts

  • #1
    Gene Arnett
    Reputation
    244,980
  • #2
    Rowefast
    Reputation
    183,560
  • #3
    dandyoun
    Reputation
    169,260
View All

Know more, shop wisely

Search

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.