idles rough and erratic

Asked by Aug 14, 2016 at 05:29 PM about the 2004 Mazda MPV LX

Question type: Maintenance & Repair

my 2004 mpv mazda idles rough I ran it for about ten miles and the front exhaust gets cherry red and it smokes and smells like there is to much gas

3 Answers


You're running rich, you have unspent fuel burning in the exhaust - the reason it's cherry red and you smell gas. Can be from a number of causes, if it was only the front side exhaust it was affecting one bank and not the other. Get it diagnosed, you may also be setting trouble codes so have those read, that will give you a good clue what's going on.

1 of 1 people found this helpful.

What r the cause for that? it doesn't give me any codes


That will require someone to inspect and diagnose. You have a throttle body and fuel distributor rail, the rail may be leaking. You may also not be firing correctly, leaving unburnt fuel to get dumped into the exhaust manifold. Excessive carbon buildup on plugs and repeated stalling can cause the computer to get wonky and run the air-fuel mix to rich. The fix may be fairly cheap and easy to do, but you need a proper diagnosis to know what to do, so take it to a mechanic.

Your Answer


Looking for a Used MPV in your area?

CarGurus has 211 nationwide MPV listings starting at $2,250.


Mazda MPV Experts

  • #1
  • #2
    Gary John
  • #3
    Michelle Ann
View All

Related Models For Sale

Used Toyota Sienna
246 Great Deals out of 19,263 listings starting at $1,300
Used Honda Odyssey
271 Great Deals out of 33,087 listings starting at $2,200
Used Nissan Quest
35 Great Deals out of 2,266 listings starting at $1,800
Used Mazda MAZDA6
148 Great Deals out of 9,874 listings starting at $1,200
Used Kia Sedona
73 Great Deals out of 7,376 listings starting at $500
Used Dodge Grand Caravan
212 Great Deals out of 30,724 listings starting at $600
Used Chrysler Town & Country
132 Great Deals out of 12,505 listings starting at $1,999
Used Mazda Tribute
8 Great Deals out of 613 listings starting at $2,000
Used Dodge Caravan
412 listings
Used Mazda MAZDA3
195 Great Deals out of 25,835 listings starting at $1,900
Used Honda CR-V
545 Great Deals out of 66,803 listings starting at $1,800
Used Chrysler Pacifica
71 Great Deals out of 29,476 listings starting at $2,900

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.