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Using too much fuel

Tiny
JCTEXWEB1
  • MEMBER
  • 2003 OLDSMOBILE ALERO
  • 2.2L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 177,000 MILES
Car misses bogs down, there is black smoke coming out the muffler, soot on plugs and muffler and it uses a lot of fuel.
Sunday, August 7th, 2016 AT 7:39 PM

20 Replies

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Have it scanned for both hard and soft codes. Replace the plugs. Check the plug wires.
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Monday, August 8th, 2016 AT 7:08 AM
Tiny
JCTEXWEB1
  • MEMBER
  • 12 POSTS
8/8/16 we are having it scanned tomorrow the auto parts scanner does not seem to read enough into the cars symptoms
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Monday, August 8th, 2016 AT 9:36 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,567 POSTS
Has the engine been tuned up recently? Also I would check for a blown fuel pressure regulator.

Here is a guide for you.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Let us know what you find so it can help others.

Best, Ken
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Friday, August 12th, 2016 AT 9:39 AM
Tiny
JCTEXWEB1
  • MEMBER
  • 12 POSTS
August 13
Car is being used for work fuel pressure regulator not leaking fuel when vacuum line disconnected. Am suspecting maybe a injector wire shorting or the vacuum modulator valve because I neglected to mention that 2nd gear does shift hard. Will keep considering all your suggestions thanks to all and I will be back to confer.
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Saturday, August 13th, 2016 AT 8:44 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,567 POSTS
Here is a guide to check the injectors

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

Please let us know what happens

Best, Ken
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Monday, August 15th, 2016 AT 11:53 AM
Tiny
JCTEXWEB1
  • MEMBER
  • 12 POSTS
Okay
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Monday, August 15th, 2016 AT 12:42 PM
Tiny
JCTEXWEB1
  • MEMBER
  • 12 POSTS
Car is showing these codes:

P0112 p1171 p0340
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Thursday, August 18th, 2016 AT 6:56 AM
Tiny
JCTEXWEB1
  • MEMBER
  • 12 POSTS
P0112 p1171 p0340

P1171 - Fuel system lean during acceleration

P0340 - Camshaft Position Sensor A Circuit (Bank 1 or single sensor)

P0112 - Intake Air Temperature [IAT] Sensor Circuit Low Voltage
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Thursday, August 18th, 2016 AT 8:20 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,567 POSTS
The cam code makes me think the engine has jumped time. Do a compression test and if low check the timing chain. here is a guide and diagram so you can check it out.

https://www.2carpros.com/articles/how-to-test-engine-compression

Please let me know what you find

Best, Ken

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Thursday, August 18th, 2016 AT 11:13 AM
Tiny
JCTEXWEB1
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  • 12 POSTS
Okay will check thanks
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Thursday, August 18th, 2016 AT 11:49 AM
Tiny
JCTEXWEB1
  • MEMBER
  • 12 POSTS
Have not done compression test yet we got it scanned with a bigger scanner same codes show up so we inspected boots for spark plugs and thet were bad losing spark got them replaced still missing there is a sound coming from manifold thats souns like a light knocking suspecting a valve or a torn gasket.
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Saturday, August 20th, 2016 AT 2:50 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,567 POSTS
Please do a compression test to see if one of the cylinders is low on compression which would mean you have a leaking intake valve.

Please let us know what you find so it will help others.

Best, Ken
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Sunday, August 21st, 2016 AT 8:57 AM
Tiny
JCTEXWEB1
  • MEMBER
  • 12 POSTS
Spark plug boots were arcing we changed them but still have original problem I neglected to mention a sound its making and it sounds like a valve. Metal on metal dry tapping. Have not done compression test yet, thats next.
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Tuesday, August 30th, 2016 AT 8:08 AM
Tiny
RENEE L
  • ADMIN
  • 1,260 POSTS
Have you done a compression test yet?
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Tuesday, August 30th, 2016 AT 9:09 AM
Tiny
JCTEXWEB1
  • MEMBER
  • 12 POSTS
Okay now car stopped running completely so it probably will be easier to check
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Friday, September 30th, 2016 AT 6:14 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,567 POSTS
Here is a guide that will help, please get back to us

https://www.2carpros.com/articles/car-cranks-but-wont-start

Best, Ken
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Friday, September 30th, 2016 AT 11:05 AM
Tiny
JCTEXWEB1
  • MEMBER
  • 12 POSTS
Car still not running no money to fix it
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Saturday, October 29th, 2016 AT 8:35 AM
Tiny
KEN L
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Let us know what happens we want to help you get it running.
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Sunday, October 30th, 2016 AT 8:13 PM
Tiny
JCTEXWEB1
  • MEMBER
  • 12 POSTS
Car finally broke down and my son just got rid of it. Thanks for all your time and effort it was appreciated.
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Monday, January 9th, 2017 AT 8:22 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
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Sorry we could not get it fixed for you, please use 2Carpros anytime.
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Tuesday, January 10th, 2017 AT 11:13 AM

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