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How to tell if my engine is running too lean or too rich??

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Old Oct 9, 2008, 09:58 AM
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How to tell if my engine is running too lean or too rich??
Hi, without any tools, is there a way to tell whether my eng is running too lean or too rich?? How to tell? All input would be highly appreciated
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Old Oct 9, 2008, 10:46 AM
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if it sputters with smoke, its rich or burning oil...

if it sputters and tries to die but no smoke it could be lean...

If the tailpipe appears "wet" inside and you touch it and it smells like unburnt gasoline you're either really rich or have a spark issue.

Another option is to hook up evoscan and see your fuel trims.

Overall, the best option is to get a wideband.


*note* I'm no expert, this is just my opinion!~
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Old Oct 9, 2008, 10:55 AM
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Get a wideband.
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Old Oct 9, 2008, 11:51 AM
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Originally Posted by EnjoyDriving
Hi, without any tools, is there a way to tell whether my eng is running too lean or too rich?? How to tell? All input would be highly appreciated
If the rod blows a hole through the block then it's too lean, if your plugs foul within 10 feet then it's too rich.
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Old Oct 9, 2008, 12:32 PM
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What is a "wideband"?? Is it part of mods??
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Old Oct 9, 2008, 01:00 PM
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Please search. Please. Questions like that should not have to be asked.

Google

Wikipedia

^ Both good places to start.
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Old Oct 9, 2008, 01:44 PM
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http://zeitronix.com/
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Old Oct 10, 2008, 12:52 AM
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Wideband Without Asking....plus If You Want To Try Your Luck You Could Try To Check The Spark Plugs...put New Ones On The Car Take For Rip And Take Them Off And There You Can See If Black To Rcih If White Too Lean.......got To Be A Little Brown Color...that Is My Two Cents....i Hope You Guys Agree...
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Old Oct 10, 2008, 01:17 AM
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Get a wideband.
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Old Oct 10, 2008, 07:25 PM
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Originally Posted by peteformance
Wideband Without Asking....plus If You Want To Try Your Luck You Could Try To Check The Spark Plugs...put New Ones On The Car Take For Rip And Take Them Off And There You Can See If Black To Rcih If White Too Lean.......got To Be A Little Brown Color...that Is My Two Cents....i Hope You Guys Agree...
I agree. If you have NO way of using electronics, look at your plugs. Its something every car enthusiest should know. Reading your plugs can tell you everything your engine is doing. Easiest way... wideband.
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Old Oct 21, 2008, 08:08 PM
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wideband
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Old Oct 21, 2008, 10:10 PM
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^^^^^ what he said
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Old Oct 22, 2008, 09:45 PM
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i think if you have to ask what a wideband is, then this is not the right forum for you and you should not be doing work of any kind to your evo... http://www.rccars.com/........ i think you should start modding one of these before you start working on anything over 50cc lol...
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Old Oct 22, 2008, 09:49 PM
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^ thats mean. unless u were born with all this knowledge, we all started somewhere, right?
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Old Oct 22, 2008, 09:54 PM
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^^^ Yes we do. Its called the newbie section! I think you should have to be "stuck" in that section for 3 months before you can post anywhere else.
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