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Rich mixture problems - 2005 Suzuki JR 50

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Turn the air screw in or out to try and correct on the carb. if that doesn't work it might be the altitude for where you are at you may have to change jet sizes in the carb or adjust the needle up or down also make sure the air filter is clean.

Posted on Jul 12, 2013

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Posted on Jan 02, 2017

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I got my carburetor problem fixed but now it runs for a while then starts backfiring it'll shut off let's set for a couple seconds and start right back up can anybody tell me why


That sounds like a fuel/air mixture problem.

Just to confirm .. it is a carburettor, not fuel injection?

As a general rule of thumb (with carburettors..) if it backfires through the exhaust/muffler .. the fuel mixture is too rich.

If it backfires through the carb/air filter, the mixture is too weak.

It could also be a 'sticking' float in the carb.

When an engine is cold the fuel is rich .. lots of fuel .. that's how a choke works.. However, when the engine warms up a rich mixture causes problems. The car may splutter and stall, run sluggish or cut out.

Dec 25, 2015 | Cars & Trucks

2 Answers

My audi a4 has hardstart and rich mixture what could be the problem


www.youtube.com/watch?v=yFSCVgjeV7o 2008 Audi A4 2 0 High Pressure Fuel Pump Failure try to check if there is no fuel leaking from the vacuum pipe

Jun 30, 2015 | Audi A4 Cars & Trucks

1 Answer

I have a 1997 1500 with a 5.0 Im getting codes po143 po172 po175 and po300. Im not sure what the cause could be.


Code 300 is for a random miss.
172 and 175 are for the same problem - 172 is for a rich fuel mixture bank one and 175 is for the fuel mixture too rich on bank two.
Code 143 is for a rich mixture for sensor number 3.
All of the codes could be connected to a leaking injector or other fuel problem. Very seldom are all of the O2 sensors faulty at the same time.

Feb 22, 2013 | Cars & Trucks

1 Answer

2002 pt cruiser code p0172


DTC P0172 - P0172 Fuel Trim System Rich Bank 1... this indicates that the fuel mixture is too rich, but you already know it is running rich.

A rich fuel mixture can be caused by a number of things First, I would suggest checking fuel pressure to make sure it is within normal specs If fuel pressure is too high due to a faulty pressure regulator for example, it will cause too much fuel to be entering the engine.

A leaking fuel injector can cause a rich fuel mixture, as can an injector that is stuck in the open position. When the engine is shut off, monitor fuel pressure with a fuel pressur gauge; it should remain steady.If fuel presure drops when the engine is off, then removing the fuel rail and injectors while still connected to the lines to visually check for a dripping injector may be informative.

There are several engine control system problems that can cause a rich fuel mixture; if you can obtain a scan tool that is capable of displaying live engine data you can check for these possible causes:

1) Low MAP reading; this can be due to a fault in the MAP sensor, MAP circuit, or as a result of low engine vacuum due to a restricted exhaust, jumped timing belt, or low compression on one or more cylinders caused by valve leakage or a leaking head gasket. Compression testing the engine may reveal internal mechanical problems of this type that would cause low engine vacuum. A low engine vacuum reading from the MAP makes the computer think the engine is under heavy load such as during acceleration, so it commands a rich fuel mixture in response. A vacuum leak can also result in a rich mixture for the same reason.

2) Low coolant temperature signal. This can be caused by a fault in the coolant temperature sensor circuit, faulty coolant temperature sensor, low engine coolant level, or a faulty thermostat that is allowing the engine to run too cold.

Keep us updated.

Oct 03, 2011 | 2002 Chrysler PT Cruiser

2 Answers

My car always smells like gas. The fuel filter was recently replaced.


Hi.

Check the fuel cap. It is often responsible for the problem. ICheck for leaks at the fuel pump, charcoal canister and throttle body. If there is no leak, then the fuel smell may be given by a too rich mixture. In that case you often have more problems because of engine flooding. Try doing a code scanning and see if there is any code stored (e.g. rich mixture, misfire, or indications of other problem. If problem is rich mixture you will smell gas at the exhaust. If mixture is too rich, check the sensors in the air intake (MAF, IAT) and temp sensor. If the problem is none of the ones I mentioned, check the EGR system. Recirculated gas smells the similarly to liquid fuel.

Regards.

Ginko

Aug 04, 2011 | 2003 Saturn L-Series

2 Answers

85 xj700 runs rich, terrible mileage, and "bogs


Is there an air fuel mixture adjustment screw? I'd try lookin for one and adjust it a little and see what happens. Sounds like your mixture is way too rich. A more lean mixture won't bog down, but too lean of a mixture will bring your idle speed up too high

May 28, 2011 | 1985 Yamaha XJ 700 S Maxim

1 Answer

I have a F-150 99 with a code of P1131... Is it that sensor off the exhaust manifold the problem?? I also heard you have to have a special tool for this?? It runs great maybe idles a little rough. Does...


The P1131 means that your upstream oxygen sensor (the one closest to the engine) is not switching rich to lean and back as frequently as it should. This could be due to a vacuum leak, a failing oxygen sensor, or a rich fuel mixture.
Rich mixture - Too much fuel, not enough air.
Lean mixture - Too much air not enough fuel.

Jun 29, 2017 | 1999 Ford F150 Regular Cab

2 Answers

Bike has a lag when its cold like its something in the motor is in a bid. after 10 miles or so it frees up and runs like its supposed to


What weight oil are you running in your bike? Years ago when we ran the straight 60 weight oil, on a cold morning you had a time kick starting the bike. Another thing is that when your bike is cold, it requires a much richer mixture to run. Whether your bike is fuel injected or carburated, you're running a very rich mixture. The fuel system control or the enricher provides the rich mixture and a rich mixture will make the bike run sluggishly.

Oct 04, 2009 | 2004 Harley Davidson FXST - FXSTI Softail...

1 Answer

I have gas coming out of my exhuast. and the car stutters


your car is running to rich for some reason.check all of your vaccum lines under the hood for leaks.the rubber vac lines turn hard after many years and crack causing intake leaks wich cause a rich mixture.also a bad mass airflow sensor can cause a rich mixture.in any case this problem must be fixed soon or your catylitic converter will overheat and it will be the next thing needing replaced--jaykra

Aug 16, 2009 | 1993 Lexus Es 300

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