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GOTA 93 tr MAGNA with EFI 2.6 lookn for fuel mixture adjusting screw so i can lean mixture off its running rich

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  • Cars & Trucks Master
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Efi most probably have a mixture screw as it is fuel injected, Check oxygen sensor . air flow meter sensor, faulty injector (leaking) check for fault code in cpu

Posted on Jan 22, 2013

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: What are the specs for adjusting MC solenoid,lean

typically it's close the screw(s) then open them one and a half turn.

Posted on Sep 15, 2009

Molson02536
  • 3854 Answers

SOURCE: how do i adjust the rich/lean fuel mixture cracked intake

You can't do it with out a tech 2 scanner, so your going to have to go back to the Mechanic to have it reprogrammed. As long as it's running rich, your going to have bad fuel economy and will not pass the emission test when you have to have it done. Good luck and glad to know you got your car running almost 100%

Posted on Nov 03, 2009

  • 340 Answers

SOURCE: fuel mixture is too lean

many of the late model cars & trucks can't be
adjusted some of the carbs are preset some you can force and some don't have an adjusting screw for the jets if the carb is in good working order but needs a bit more fuel you u must adjust the float for more or less fuel check to make sure the float valve is clean free and not sticking ..

Posted on Mar 03, 2010

  • 946 Answers

SOURCE: carburetor idle mixture adjustment for lean burn chrysler engines

On a carbureted engine(the days of old) I had a method of my own
which always seemed to do really well.
Warm up the engine to operating temperature and make sure there is no
operation of the automatic choke.This should mean that the choke flap in the top of carb is standing vertically offering no resistance to airflow.
Hook up a tachometer if the car has'nt got one.
Note the idle speed in PARK.
Turn the fuel/air adjusting screw underneath carb's right or left sideI(NOT the idle speed set screw) IN and note the rpm as you do.If it raises a little,you are getting close.
Go ahead and turn that screw in all the way and lightly seat it(count the turns in from the highest idle reading),then back it out to the highest reading.NOW turn it in slowly until you see the RPM drop slightly.
Now back it out a little so you are at peak RPM again.
REPEAT this with the other side's fuel/air screw.
After you have gained this higher RPM (maybe), then set the idle speed control screw to desired RPM, and be sure to get in the car and while holding the brake,put the car in DRIVE to make sure the idle doesn't drop too low. don-ohio (:^)

Posted on Nov 17, 2011

  • 46 Answers

SOURCE: How do i adjust my Air/Fuel mixture on my 87 honda accord?

you have a vacuum leak some where take a can of brake clean and spray a little on the vacuum hoses and if the idle goes up then that is where the leak is

Posted on Sep 20, 2012

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1 Answer

How do I adjust the CO and fuel/air mixture


the CO and fuel/air mixture is not adjustable on modern cars , only on carburettors . the engine management system will ensure correct fuelling, if there is a fault with this then in most cases an engine management light will illuminate on the dash board

Feb 17, 2015 | 2000 Daewoo Nubira

1 Answer

I have a carbureted 86 22r pickup. It runs perfect when cold. As soon as the choke pulls off the idle is rough. I have already ruled out the fuel shut off solenoid. It is clean and operates perfectly....


It could be that you have to adjust the idle mixture screw a little . It may be set too lean or too rich which gives what you describe When the engine is at operating temperature turn the screw in or out a bit until the motor runs better. Adjust then until it starts to run rough then screw it the other way until it starts to run rough again. Correct mixture will be in the middle of those points.

Jul 21, 2013 | Cars & Trucks

1 Answer

Wat do a fuel air metering do to a car if it not working


If you mean the O2 sensor, it sends a signal to the computer telling it if the fuel mixture is rich or lean. The computer adjusts the fuel injectors to correct the mixture.
Code 1193 is for a sensor that is not switching back and forth between rich and lean. Sometimes the problem is the O2 sensor and sometimes not.
You could unplug the sensor and the engine would still run.

Mar 11, 2013 | Cars & Trucks

1 Answer

How do I adjust the fuel mixture on the ford 460 efi


The mixture is not adjustable.
You have fuel injectors that are controlled by the computer.
If the check engine light is not on, I would look for a fuel pressure problem or a leaking injector.

Feb 06, 2013 | Cars & Trucks

1 Answer

I have code p0507 & p2187 on my 2004 Saab 93 the idle is rough



Combustion engines operate by burning an air/fuel mixture of about 14.7 to 1-14.7 parts air to 1 part fuel. When the air ratio goes below 14.7 parts, this is called a "rich" mixture. If the air rises above 14.7 parts, it is called a "lean" mixture.

Rich Mixture = Too much fuel, not enough air
Lean Mixture = Too much air, not enough fuel

To keep the engine running properly, the Engine Control Module measures the oxygen content in the exhaust with oxygen sensors and makes adjustments to the mixture by injecting more or less fuel.

P0507 Idle Control System RPM Higher Than Expected

P2187 System too lean at idle

Things to check:
1. MAF
2. Fuel pressure, fuel pump flow rate

Do you have cold air intake?

Run a fuel system cleaner first and reset software. Long Term Fuel Trim Additive. Max Value, Air/Fuel too Lean.

Fault symptom


Malfunction Indicator
Lamp

The engine may stop after starting, run unevenly and misfire or run
at high rpm.


On-board diagnosis

Type of
diagnosis:


Continuous

Enable criteria:

The engine has started and lambda control is active.An additive adaptation is
carried out.Cooling and intake air temperature 60°C.Fuel level at least
12%.

Fault criteria:

The additive adaptation factor is greater than 5.25%.

Diagnostic help

Diagnosis
regards:


Checking air/fuel ratio. With this DTC, the engine will be getting too much air or too little fuel.IMPORTANTA crankcase ventilation leak may be one reason as to why a DTC is set. Check crankcase ventilation function before starting regular troubleshooting.

Functions in the diagnostic
tool related to the fault:


Test value:
•O2S1 lambda
•Additive
Adaptation
•Short Term Fuel Trim
•Purge Adaptation
•Airmass Deviation
from Calculated
•Total Fuel Trim Here's a helpful link for you: http://repairpal.com/OBD-II-Code-P0171-and-P0174



You most likely have a vac leak. Hope this helps Fix Ya! Show some love with positive feedback if this brings you to a solution. Thanks Happy Hanna-kwanz-mas

Oct 26, 2010 | 2004 Saab 9-3

1 Answer

How do i adjust the rich/lean fuel mixture cracked intake


You can't do it with out a tech 2 scanner, so your going to have to go back to the Mechanic to have it reprogrammed. As long as it's running rich, your going to have bad fuel economy and will not pass the emission test when you have to have it done. Good luck and glad to know you got your car running almost 100%

Nov 03, 2009 | 2005 Scion xB

1 Answer

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

Jun 04, 2009 | 1993 Nissan Pickup

2 Answers

96 Buick Roadmaster running lean.


That is an oxygen sensor, these sensors send a signal to the computor to adjust the rich/lean fuel mixture.
When a code comes up for them, they generally need replacing.

Mar 30, 2009 | 1996 Buick Roadmaster

2 Answers

22R Carb at high altitude


Yes, Colorado is much higher in altitude. Do to higher altitude the barometric pressure is less than sea level by a long shot. Lower barometric pressure mean that less air is entering your engine. Which in turns mean that your engine is now running richer than it was at a a lower altitude. So I recommend checking you engine timing, and adjusting your carbs air/fuel mixture. yes this means that you may need to rejet. but first there is a screw on your 22r's carb that you must adjust to lean the air mixture just right. I have had a stock 22r carbortor before and never had to rejet it. i probibly should have but it ran fine at sea level and all the way to about 10000 ft. after 10000 feet i had to lean the fuel mixture to even alow the engine to run. This screw that you must turn is hidden due to toyota not wanting you to tamper with it and burn your engine to the ground by running your engine to lean. it has a metal plug on the passenger side of the carb about the size of a pencil eraser. you must drill that out and then you can adjust the air fuel mixture. Clock wise is to lean the air fuel. and Counter clock wise is to richen the air fuel mixture.A good rule of thumb is to turn the air/fuel screw all the way clock wise and then back out about 2 and 1/2 turns. That is the factory adjustment. you may only need 2 turns out. Best of luck i hope you get it running perfect. Try this adjustment first then if it still runs rich then think about rejetting.

Here is a picture of what i am talking about.

#1 is the air/fuel mixture, #2 and #3 are cold and warm idle screws.
#4 is a A/c idle adjustment.

5ff308f.jpg

Sep 04, 2008 | 1987 Toyota Pickup

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