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What causes excessive gas use - 1997 Nissan Pathfinder

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Dirty air filter, bad spark plugs and wires,

Posted on Apr 10, 2011

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My Toyota camry car, 1998 model consumes more fuel than expected. What is might be the cause?


lots of heavy junk in trunk, under inflated tires, open windows at high speed instead of using AC, clogged gas filter, weak spark, excessive bearing friction, excessive speed on road, jack rabbit starts, slipping transmission, dragging brakes, etc.,

Aug 27, 2016 | 1998 Toyota Camry

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Causes of excessive fuel consumption


Hello, There are several causes for excessive fuel consumption . Dirty or clogged air filter, leaking gas hose or fuel lines, under inflated tires, wrong sized tires, excessive weight in the trunk, a heavy foot on the gas pedal are only a few.

Mar 17, 2015 | Cars & Trucks

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Causes for isuzu 4jx1 vehicle's dark smoke


Oil burning or excess gas not being fully burned. If gas, smoke will be very black, whereas oil burning has a bluish tinge. If your engine runs good otherwise, it is probably oil burning. Most common cause of that is worn piston rings.

Jan 20, 2015 | Isuzu Cars & Trucks

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Car wont start


Code 420 means the catalytic converter is not up to standard, which may not have any connection to your current problem.
The other codes deal with issues concerning the gas tank vent and purge controls which could be causing excessive pressure in the gas tank.
I would want to know if you have normal fuel pressure at the injectors, and if there is excessive pressure building up in the tank.

Feb 20, 2014 | Cars & Trucks

1 Answer

Use too much gass


Emissions System not functioning properly can cause excessive fuel consumption. Emission System Evaporative Canister is likely clogged this will cause both oder and excessive use of fuel.

Nov 05, 2011 | 1996 Lexus LS 400

1 Answer

2005 Scion TC with 85,000 miles, brand new engine less than 1 year old, started having ''check engine light" on constantly just after installing new engine. Codes read "EVAP...


could have gotten a tank of bad gas, water in it, I find that to happen at some of the fuel stations here, I only go to one now and have no problems

Jul 10, 2011 | 2005 Scion tC

1 Answer

What are the causes for NXo reading


A high NOx reading can be caused by any conditions that make the engine run lean. Vacuum leaks will dilute the fuel/air mixture with excess air leading to lean running. Lean mixtures lead to high combustion temperatures which produce NOx.

A malfunctioning EGR valve will not recirculate enough exhaust gas to keep combustion temperatures in check. The primary purpose of this valve is to lower NOx emissions are high RPM. It does this by delivering some low oxygen content gas back into the intake stream to dilute the incoming mixture. By decreasing the oxygen, combustion temps are lowered.

By the same logic, a misfire can cause high NOx. If the fuel/air mixture is not burned, excess oxygen in the exhaust (catalytic feed gas) will cause a dramatic decrease in catalytic converter efficiency in reducing NOx

Jan 24, 2011 | 1988 Toyota MR2

2 Answers

Unable to put gas in at at gas pump


SOUND LIKE EVAP SYSTEM FAILURE.CAUSING EXCESSIVE FUEL PRESSURE VAPORS BUILT UP IN FUEL TANK.TAKE IT TO DEALERSHIP THEY HAVE TO USE DIAGNOSTIC EQUIPMENT TO FIX.THIS IS A LITTLE TRICK TO GET GAS IN TANK BACK OUT SPOUT A LITTLE NOT MUCH TO LET VAPORS ESCAPE WHILE YOU PUMPING GAS.YOU NEED TO FIX.FUEL PRESSURE VAPORS WILL BUILD UP ENOUGH TO BLOW UP FUEL TANK ESPECIALLY ON HOT DAYS.

Mar 06, 2010 | 2001 Chevrolet Blazer

1 Answer

How do i burp the air out of my gas 1997


oil in the air filter is caused by one of 3 things, excessive oil level in the crankcase or excessive engine cylinder leakage causing to much back pressure and blowing the oil up the and into the crankcase vent hose, this same condition can also be caused by a plugged Positive Crankcase vent system valve. (PCV for short)

Jan 19, 2010 | 1997 Volkswagen Jetta

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