rich to lean and lean to rich

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Apr 19, 2016 | 04:07 PM

#11

donbrew

Moderator

Joined: 01-23-2009

Posts: 26,532

From: Fredericksburg,VA

Sometimes a roar, a BRRRRRRRUM. You may smell an unusual odor, kind of like a solvent.

But usually that would give only the "lean" code.

Apr 20, 2016 | 07:23 AM

#12

DrLoch

Senior Member

Joined: 09-07-2008

Posts: 1,016

From: Mebane, NC

FWIW Along with the injector suggestion, fluctuating fuel pressure can also cause a fuel trim swing.

Apr 20, 2016 | 07:37 AM

#13

BDR1973

Thread Starter

Senior Member

Joined: 01-07-2016

Posts: 112

From: Ashland City, tn

I hear no unusual sounds when engine is running or odor. Will get fuel pressure tested once i get to it.

Apr 20, 2016 | 08:04 AM

#14

donbrew

Moderator

Joined: 01-23-2009

Posts: 26,532

From: Fredericksburg,VA

Quote:

Originally Posted by DrLoch

FWIW Along with the injector suggestion, fluctuating fuel pressure can also cause a fuel trim swing.

That makes the most sense.

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