Question about Cars & Trucks

1 Answer

2004 kia opitimA 4 cyl we have replaced coil packs wires plugs map senors and fuel injectors the car still misses backfires uses gas and wont run right what is wrong

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Cars & Trucks Master
  • 42,841 Answers

Run the fault codes to find which sensor is malfunctioning. Check the cam/crank position sensors for dirt in the air gap ( check gap is within specs)

Posted on Nov 13, 2014

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad
Just_Bobz
  • 448 Answers

SOURCE: 92' Cavalier 2.2L 4 cyl. runs but has a miss coming from #4 cyl.

Matter not whether plug fires out of engine. Put it back in and clamp a timing ligh to it. If the light won't fire, you don't have enough spark to fire cylinder, hense miss.

Posted on Jan 04, 2009

  • 18 Answers

SOURCE: 99 BEETLE BOGS/MISS ON HARD ACCEL, KRIMP FUEL RETURN NO PROBLEM

replace your coils

Posted on Jan 22, 2009

  • 1348 Answers

SOURCE: 2002 ford ranger 3.0 is missing on 2 cyl plugs ok injectors ok new coilpack

do a compression test,as the intake manifold,like alot of fords is no good.

Posted on May 22, 2009

roniecon
  • 6826 Answers

SOURCE: 2003 kia # 3 misfire/ runs rough

Replace the coil for number 3 cylinder.

Posted on Nov 11, 2009

  • 131 Answers

SOURCE: rough run,misfire #7 cyl. replaced coil pack

have you had the compression checked across the cylinders? **** sqeeze bang blow

Posted on Feb 25, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

2004 Sorento began with code P0305, cyl #5 misfire. Inspected and replaced plugs, wires, and coil pack on cyl #2. Repair shop told me cyl #5 injector bad so they replaced. Still has misfire.I suggeste


If you had code P0305, I don't know why they would have done anything to the #2 cylinder but if they have already replaced the plugs, wires and injector; here are a few more items to check:
1) Check connections from ECM. Look for any corrosions or bent/broken pins.
2) Check the fuel line pressure
3) Check the engine compression
4) And if the above are good, then you will probably have a defective ECM

Nov 28, 2014 | Cars & Trucks

1 Answer

2004 Kia spectra runs fine at start up but bogs down after a few minutes codes are multiple miss fire and 3 and 4 misfire all coil packs plugs and wires are new


The codes mean the computer saw a drop in RPM at the point when those cylinders should have been producing power.
The problem could be ignition, but also fuel injectors or compression.
Could also be a cam sensor but you should have a code for that.

Jan 29, 2013 | 2004 Kia Spectra

1 Answer

2002 saturn vue cylinder 1,3,5 misfiring when swapped coil pack it went away now cyl 2,6 misfiring.


having PO 304 = Misfire cylinder 4,PO 306 = Misfire cylinder 6, as I read above you have done the most. The thing that you have missed is to check whether the Catalytic Converter is faulty or not. To get an idea check whether you have a smell like rotten eggs at the end of the exhaust,you start having problems with cat and needs replacement. My advice before you go for a cat replacement is good to visit an MOT center and check your emissions and then you decide,

Aug 10, 2012 | Kia Rio Cars & Trucks

3 Answers

Hi, my 1996 pontiac 3.1 just got the service engine light went on along with rough idle. Took it to a auto store they hooked it up and said that cyl 4 miss fired. Any ideas. Tune 6 months ago full tank...


either injector, or plug wire or plug-I'd vote for for the plug wires first, and you can check the injector by using a broom handle and holding it against the suspect injector-see if it clicks while the engine runs. Compare it to others to see if it sounds the same. You might also remove the plug and see if it is wet (bad plug wire) or dry (injector, possibly).

Feb 28, 2011 | Pontiac Grand Prix Cars & Trucks

1 Answer

2003 Hyundai Sonata with 4 cyl. PO301 error code. Have replaced spark plugs, wires, coil packs, and mass air flow sensor. Replaced air filter due to heavy gas smell. Car was starting after tapping gas 3...


P0301 - Cylinder 1 Misfire Detected.

Possible Causes:
- Improper spark plug at cylinder #1
- Insufficient compression at cylinder #1
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #1
- Fuel injector #1 may be faulty
- Intake air leak at cylinder

Possible Solutions:
- Perform Injector Service
- Replaced Spark Plug #1
- Replaced Injector #1
- Replaced Ignition Coil #1

Being you have a heavy gas smell I would look into the injectors. If injector #1 is over producing it can cause a misfire. Test your compression and fuel pressure.

Jan 17, 2011 | Hyundai Sonata Cars & Trucks

3 Answers

99 dodge caravan #4 cylinder misfires, i replaced spark plug wires and spark plugs. Scanner showed #4 still misfiring, could this be the coil?


It could very well be a bad coil pack,or you have low compression in that cylinder.If the compression is good then go with the coil pack,if not you may need a head gasket or an intake manifold gasket.

Nov 07, 2009 | 1999 Dodge Grand Caravan

2 Answers

2001 ford taurus p0301 and p0303


You are mis fireing on cyl 1 and 3 if you replaced plugs and wires and coil this is going to be a fuel injector issue or valve issue. See if you can swap the injectors with known good cyl. and see if it changes. Or have a shop do a fuel injector service on it to see if it helps. It may be to late for the fuel injector service.

Mar 01, 2009 | 2001 Ford Taurus

1 Answer

92' Cavalier 2.2L 4 cyl. runs but has a miss coming from #4 cyl.


Matter not whether plug fires out of engine. Put it back in and clamp a timing ligh to it. If the light won't fire, you don't have enough spark to fire cylinder, hense miss.

Jan 04, 2009 | 1992 Chevrolet Cavalier

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

63 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Randy Ohler

Level 3 Expert

14585 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...