Engine goes lean??

For discussing MicroSquirt (TM) configuration and tuning of fuel parameters (including idle valves, etc.).
Forum rules
Forum rules
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
Post Reply
fireblade
MegaSquirt Newbie
Posts: 2
Joined: Fri Apr 28, 2006 9:15 pm

Engine goes lean??

Post by fireblade »

I use extra 024s13c. Megatune 2.25 .Staged injection is on.8 injectors.

I have this kind off problem.Engine goes lean 1500-3500rpm.Earlier it work correctly.High rpm afr is ok.Here is some readings from same datalog.I wondering why AFR goes lean, while rpm,tps,map are same.

RPM:2300-2300
TPS:1-1
MAP:79-79
MAT:28.9-33.3
CLT:97.8-101.7
Dutyc1:7.3-5.0
PW:1.9-1.3
AFR:13.4-16.1

Datalog:http://www.esnips.com/_t_/datalog
Top
ilostmymindcom
MegaSquirt Newbie
Posts: 24
Joined: Sun May 01, 2005 11:15 pm
Contact:
Contact ilostmymindcom

Post by ilostmymindcom »

check your fuel pressure..
verify that it holds close under a free rev. if it drops, that would be your problem.
Top
fireblade
MegaSquirt Newbie
Posts: 2
Joined: Fri Apr 28, 2006 9:15 pm

Post by fireblade »

I have checked fuel pressure it was ok, 3 bar and still AFR go lean with low rpm.This fault show up only warm engine.Cold engine works good.
Could this fault be in program??Any ideas??
Top
Post Reply

Return to “Tuning Fuel and Air”