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351w running rich?

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Old Sep 20, 2012 | 05:15 PM
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351w running rich?

After getting an oil change done, my mechanic said i think your running rich because he smelled a gas smell from the exhaust. I was in a rush and didnt have much time to talk more about it. What could be the problem here?
 
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Old Sep 20, 2012 | 06:28 PM
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Perhaps your mechanic is trying to pad his wallet? Before getting too wrapped up from their comments why don't you check for codes. The PCM will tell you if it thinks the engine is running rich or lean or ???
 
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Old Sep 20, 2012 | 06:38 PM
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Originally Posted by rla2005
Perhaps your mechanic is trying to pad his wallet? Before getting too wrapped up from their comments why don't you check for codes. The PCM will tell you if it thinks the engine is running rich or lean or ???
I do have a check engine light on.... And i dont think hes trying to scam me cause i have smelled that gassy smell from the exhaust for quite a bit
 
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Old Sep 20, 2012 | 06:42 PM
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Then you should check for codes to see what the PCM is trying to tell you. Ignoring it is not going to make it go away.
 
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Old Sep 20, 2012 | 06:54 PM
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Pull vacuum line off regulator and see if it's leaking. That's where I always start first.
 
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Old Sep 21, 2012 | 12:22 AM
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Better yet, check and see if your fuel tank is leaking. If you have dual tanks, the top of the rear one usually rots out from everything getting tossed on it from the tires. You'd definitely smell fuel that way. But check the codes, the computer will know what's up better than a mechanic who didn't check them.
 
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Old Sep 21, 2012 | 09:54 AM
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Originally Posted by GNR22
Better yet, check and see if your fuel tank is leaking. If you have dual tanks, the top of the rear one usually rots out from everything getting tossed on it from the tires. You'd definitely smell fuel that way. But check the codes, the computer will know what's up better than a mechanic who didn't check them.
Ya i went to autozone to see if they can read the code for me, but my computer is too old for them to read, they only read i believe vehicles 96 and newer, so im gonna have to take it to a mechanic for them to read it. Could it be a faulty O2 sensor? im noticing also a decrease in performance and especially mpg
 
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Old Sep 21, 2012 | 10:50 AM
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That's odd. Usually parts stores carry obd1 and 2 readers since you can make money off of someone that needs a part. Go online and order an obd1 reader. They're very cheap
 
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Old Sep 21, 2012 | 11:14 AM
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Look in this forum. You'll find a list of codes and how to check them on your EEC4 computer (obd1) with just a paper clip and a functional check engine light.
 
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Old Sep 21, 2012 | 12:00 PM
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Yes i agree with untamnd i have a great code reader and it and its great just count the beeps/ blinks and look them up in the book it comes with and done.
 
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Old Sep 21, 2012 | 05:09 PM
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Fuel Injection Technical Library » How To Run a Self-Test No code reader required.

Fuel Injection Technical Library » 2 Digit Self-test Codes 11-32 OBD-1 codes
 
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Old Sep 23, 2012 | 11:02 PM
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Give this guy some rep points! Great post as always. I have to spread myself around before I give you any more points lol
 
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Old Sep 24, 2012 | 07:55 AM
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You are too kind.....

Nothing special about my post, just pointing out the obvious and most overlooked item you should do when working on these trucks.
 
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