Question about 1999 Kia Sportage

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Exhaust too rich

Rough idle

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  • Anonymous Jul 02, 2008

    how do you fix the exhuast being to rich

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  • Master
  • 1,010 Answers

Check the wheel pressure.

Posted on Jun 17, 2008

5 Suggested Answers

Molson02536
  • 3854 Answers

SOURCE: 95 Chevy C-1500 runs rough at idle and during accelleration

Check the vacuum line to the fuel pressure regulator and check to see if the fuel pressure regulator has gone bad. Give the throttle body a good cleaning and the injectors too. Do not use carb cleaner, it's to corrosive for the gaskets used in the throttle body. The other thing too that would cause this is a stuck or bad EGR valve, Try cleaning the EGR valve too since your cleaning the throttle body. Good luck and keep me posted.

Posted on Jun 11, 2009

pippall
  • 1486 Answers

SOURCE: idle is rough and rich after warming up 1986 toyota 4wdwagon 3 ac

sounds like you are not geting the right amount of air to fuel system.Have you checked the air filter is clean.Change the air flow senser if it is clean.Good luck!!

Posted on Jul 07, 2009

  • 7 Answers

SOURCE: rough idle - white smelly exhaust

the roughness at idle is the shocks .replace the shocks. i had the same problem

Posted on Jan 18, 2009

  • 2187 Answers

SOURCE: 1993 nissian p/u run rich and it running real rough

If it is a carb engine have the air fuel mixture corrected by adjusting the screws on the carb. Try also adjusting the idling.

For EFI engines see if you can check the Idle Control Solenoid Valve, have it cleaned. You can also check the oxygen sensor if it is working or not

Posted on Jun 04, 2009

  • 12 Answers

SOURCE: rich fuel mixture at idle, smoke from exhaust,

change the O2 sensor/s and the mass airflow sensor

Posted on May 12, 2010

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1 Answer

2.3l 2001 ford ranger rough idle and running rich and misfiring with p0301 code


You have to correct the cylinder misfires first

You may have vacuum leaks somewhere in the
intake or exhaust

You really need to look at data with a scan tool

You start with Mode $06 & cylinder misfire count ,if that
even works well on your motor

Then you look at fuel trim & add short & long together,
to get an idea if it is running rich,which would be a lean
condition from a vacuum leak or rich from leaking injectors

All the data is only good if you haven't cleared it or disconnected
the battery. If you did, then you have to drive until all I/M Monitors
run & then look at data

You look at O2 sensor data & even scope them

You made no mention of checking for codes
No mention of a cylinder leak down test for valve leaks
Exhaust Converter age or condition !
Fuel Pressure !

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Possible vacuum leak and or internal engine issue, have a cyl compression check done along with cyl leakage test

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If exhaust is rich, you may have excessive fuel getting dumped into cylinder(s). A sicking or leaking fuel injector can cause this. How many miles are on the engine? Improperly seating valves can cause this also. Or if timing is incorrect.

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328 gts 1986 very rough idle, running rich you can smell the gas from the exhaust . runs fine once the throttle is pressed


you need to adjust your idle screw on your carb i could tell ya how on that type of car but your running to high of an idle and flooding your cylinders thats y it is idleing rough and you can smell the gas, adjust your idle screw back a little and then you might want to check your plugs and make sure you didnt fowl and of them with it running rich

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94 camry. 2.2 fed emissions. Rough idle. runs great any rpm off idle. have checked timing. vacuum leaks, plugs, spark, removed throttle body and iac and cleaned. removed egr. plugged intake. all with no...


Before we both knock ourselves out with fuel injector testing. Hook up a Digital voltmeter (DVM) to upstream O2 sensor and lets see how she is burning. Remember positive lead of DVM to signal wire and negative lead to ground. Anything above 550 mV is rich anything below 350mV is lean. Be mindful that an exhaust leak the size of a pin hole in this region can cause a rough idle. A healthy reading should bounce between 550mV and 350 mV.
Next to test is O2 is working block off air in take making mixture rich and see what O2 says about it . Then pull off a vacuum hose (a lean condition) and see if DVM drops to 200to 300mV's.
Keep me posted.

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What are the symptoms if my car has a bad engine coolant temp sensor it is a 98 saturn sl1


More specifically you will have trouble starting the car. When the ECTS is bad the PCM reads it that the engine is at -40F. This means that it will dump tons of fuel into the engine in order to warm it up. You may also experience rough idling due to the rich fuel mixture and black smoke from the exhaust (which is an indication of running rich, burnt fuel).

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1 Answer

Engine backfires when accelerating, idles rough but runs fine over 50+ miles per hour.


Idle is rough because not a right Air/ Gas mixture.
The ideal air /gas ratio is 14.6:1. If less than that it has rich mixture. If it more then that it has a lean mixture.
Back fire happens when accelerated because of of rich mixture pumped out at exhaust cycle is burning.
At speed above 40 miles/hour, temperature and fast compression cycle make the problem is less obvious.
Cheap first shot is to replace the air filter to correct this ratio. If it doesn't help, need Fuel distributor service. ( However people like to make easy money from you first, they will convince you for a turn up) Good Luck. I'll check back to see how the progress going.

Jul 05, 2009 | 2001 Dodge Neon

1 Answer

Exhaust blows black on ford explorer


look for a vacume leak. black smoke means it is running very rich

Mar 17, 2009 | 1992 Ford Explorer

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87 Supra idles rough and dies out


check timing and set idle to 650rpm

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