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HOW DO I FIND ADJUSTING TOOL FOR AIR FUEL RATIO?

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What does running rich mean? And is it expensive to fix?


Running rich is a term to describe the fuel to air ratio as being to " rich" with fuel and simply means you need more air.
Usually done by adjusting the carb.

Jan 02, 2016 | Cars & Trucks

2 Answers

Need tool for adjusting air fuel ratio for husqvarna 235 chain saw


It should be a spline tool. It is the most common one.
Genuine Poulan Weedeater Part 530035560 Carb Adjusting Tool

If you work a lot 2 cycle trimmers and chainsaws you might buying the set of four adjustment tools.
2 Cycle Carburetor Adjustment Kit Includes 530035560

Nov 07, 2014 | Husqvarna Garden

1 Answer

Is the ECU of the Lexus 600 hl capable of adjusting the air/fuel ratio when using better fuel? Or are the air/fuel ratio's programmed as a fixed ratio? And therefore better fuel will not lead to i


There are different octane levels of fuel & different
manufactures use different additives,some of which are
required seasonally by federal & state regulations.

You can study the various fuel ratings,there is more
to it then just octane but there is no such thing a
better fuel.

You use what is recommended in your owners manual
& may be on a sticker on the fuel door


The O2 Sensors report oxygen content in the exhaust
converter & that is a main component to adjusting fuel
trim thus the ratios you refer to. The PCM,ECM,ECU etc
won't have a way to know the fuel chemistry


There are hundreds of somewhat fixed parameters in
a vehicles computer & it does try for a ratio on the air
fuel,but that is constantly moving as you have different
engine load as you drive.


The day you drive off the dealers lot with a new car
is is all down hill,no way to improve efficiency because
the engine wears & piston & valve carbon up etc.


Doing any excessive amount of preventative maintenance
over the years is all you can do.


Full Synthetic Oil -changed no more than every4000 miles
New Spark Plugs--every three years (No such thing as a Tune-Up
they left 25 years ago)
No vacuum Leaks
PCV Valve -never needs to be replaced, ever --clean it if you want
You can make you list as long as you want

You need to be working on all vehicles 3 or 4 times a year
You don't wait for break down issues you need to be proactive
& continually learning

If you want anything done correctly==you have to do it yourself

Sep 04, 2012 | Lexus Cars & Trucks

1 Answer

Air sensor check engine light


Ok as a guess that you have a SUV and you have different air faults. if you are a DYI'er go to an auto parts store and get an error code tool. Harbor freight for $30-50. Hook it to the car and find out which sensor is it calling for. Note, you can reset the check engine light on most tools that are not the cheapest.
P1130
Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction (Bank 1 Sensor 1)

P1133
Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 1 Sensor 1)

P1135
Air/Fuel Ratio Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

P1150
Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction (Bank 2 Sensor 1)

P1153
Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 2 Sensor 1)

P1155
Air/Fuel Ratio Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

Nov 26, 2011 | Lexus RX 300 Cars & Trucks

2 Answers

How do you set the timing on a 01 yamaha yz 125 or why else would it be melting the spark plug prob off with a 32:1 fuel mix and the plug that goes in the bike from the factory


melting spark plug is too lean. exhaust gas high temps caused by too much air. your oil to fuel ratio is correct, but your air to fuel ratio is not. adjust your needle clip position to add more fuel to the carb by lowering the C clip. this will raise the needle, giving you more fuel for the same amount of air. also check air filter element for tears.

Nov 22, 2010 | 2003 Yamaha YZ 125

1 Answer

Motor will not run with air cleaner on


Is it a newer and clean air cleaner? Have you tried adjusting the carb's air/fuel ratio?

Sep 02, 2010 | Honda VF 750 S Motorcycles

1 Answer

I got an P0171 code on my 2000 Lexus which I'm told has something to do with my mass air flow sensor..Is this a commmon problem and what symtoms can it cause?..Car is slow to accelerate and is idiling on...


P0171 sets when air/fuel ratio feedback is stable after engine warm up, & fuel trim is considerably in error on the lean side.
The signal from a/f ratio sensor is approximately proportional to existing air-fuel ratio.
CHECK: system for intake leaks, incorrect fuel pressure, plugged fuel injectors, 02 sensors or coolant sensor operation.
check air fuel ratio sensors. to test main AFR sensors directly you will need a good scan-tool to test parameters.
A thorough preliminary check is important. If you take your time you may find the answer before you start playing the "process of elimination " game.
Good luck, let me know how it is going.

Apr 27, 2010 | 2000 Lexus ES 300

1 Answer

The car doesn't have power when hit the gas pedal speed pick up really slow also have code of 171 sistem too lean on bank one,lexus 2000 rx 300


this code sets when air fuel ratio feedback is stable after engine warm up,and fuel trim is considerably in error on lean side;The signal from air fuel ratio sensor is approximatelyproportional to existing air-fuel ratio.

for this code suspect excessive lean condition,normal rangefor total trim is between -35% to +35%,DTC uses "two-trip detection Logic".

Check system for intake leaks,incorrect fuel pressure,plugged fuel injectors,O2 sensor or coolant sensor operation.

check air-fuel ratio sensors
to do it you need to check them with a good scanner tool.

also,check MAF sensor operation.

personally i would clean with the special spray for MAF sensor (you can get it from you autoparts store) and try a fuel injector cleaner before start spending money in shops.

hope this info can help you.

Sep 24, 2009 | 2000 Lexus RX 300

2 Answers

2001 Hyundai and I have the same code and problem


Firstly, these codes are set when the fuel 'TRIMS' are out of spec (either tool LEAN - P1123, OR too RICH - P1128). The air/fuel control system, in addition to a number of sensors, includes the following components and systems: a. Intake air system. b. Exhaust system. c. Evaporative emissions control system (includes purge control solenoid valve). d. Fuel injectors. e. Fuel pressure regulator. f. Fuel pump. For the air/fuel ratio to be within limits, all of the sensors, components and systems associated with the air/fuel control system must function within normal parameters. STOP replacing parts/sensors unless you can VERIFY they are defective! The Powertrain Control Module (PCM) on Hyundai OBD II vehicles (all 1996 and later models) can adjust the engine Air to Fuel (A/F) ratio to compensate for variations in operating conditions. This adjustment only takes place during "Closed Loop" operation. The PCM uses input from the following components to determine the amount of fuel to deliver:
  • Oxygen sensors
  • Air flow sensor
  • Coolant temperature sensor
  • Intake air temperature sensor
  • Throttle position sensor
  • Engine speed sensor
The ability to adjust the A/F ratio enables the PCM to compensate for engine, fuel and sensor variations as well as temperature, altitude and humidity. This enables the vehicle to maintain a stoichiometric (14.7 to 1) A/F ratio that will ensure optimal engine performance and minimal emissions. Since the PCM can change the A/F ratio to compensate for a wide range of conditions, an indicator is needed to identify that a compensation has been made. Fuel Trim values shown on the HDS scan tool are the primary indicator that an adjustment in fuel delivery has taken place. The scan tool displays the PCM's A/F ratio compensation as "Short Term" Fuel Trim (ST TRIM), Long Term Fuel Trim (LT TRIM), and "Oxygen Sensor" Trim (TRIM B1 S1 and B1 S2). The most beneficial diagnostic information comes from "Short Term" Fuel Trim and "Long Term" Fuel Trim. AFTER ALL THIS, I think it's simply your Coolant Temperature Sensor giving 'FALSE' information to the engine control module/powertrain control module (ECM/PCM).

Aug 11, 2009 | 2001 Hyundai Accent

1 Answer

Think air fuel ratio is off over loading


Here are a couple of things to try.
1. You may have a vacuum leak or a bad EGR valve. 2. Try adjusting the timing. 3. Have you checked the air and fuel filters? 4.You may want to try adding some fuel injector cleaner to your gas if you haven't done so already.

Jun 18, 2009 | 1992 Nissan 240SX Fastback

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