A couple VE learns later..

[Cameron]

Hi,  back at my testing this weekend.  

I seem to be running lean in general.  I usually see the cAFR above 13 and rarely in the 14's.  i'll be driving along on the fwy and it will start to cut out then die.  is there some base setting that will increase the fuel intake?

my thermostat says I am running pretty consistently at 195 degrees.  I dont think I am vapor locked, I put a temp gage on the intake fuel hose and it was in the 150's.

also, it starts great when cool, but after driving for a bit and engine temp is at 195, it can be a bit of a pain to start.  thoughts of what is making the warm start tough?

thanks!

Cameron

[George Beckman]

As Dick Patterson says, 90% of fuel problems are spark. How long since you changed the distributor module? It can create all kinds of fuel problems. If it doesn’t let the EBL know “I just sent a spark” The EBL says—“No spark? Injector, don't squirt. No sense adding fuel—it’s not going to ignite.” Modules fail hot, but not necessarily a full fail.

On Aug 26, 2023, at 4:40 PM, Cameron <cbi...@gmail.com> wrote:

also, it starts great when cool, but after driving for a bit and engine temp is at 195, it can be a bit of a pain to start.  thoughts of what is making the warm start tough?

---------

Best Wishes,

George
gbec...@graestone.org

[Bill Van Vlack]

If you're seeing commanded AFRs (cAFR) at 13-low 14s, the ECM is telling the engine to run rich.   Did you happen to take any datalogs during the Learns?

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[Cameron]

yes, here is the data log from the way home.  15+ minute drive.  im not very good at looking at these things yet, if you have some guidance on the best way to analyze this I am all ears!

Cameron

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[Bill Van Vlack]

Having a datalog when the coach cut out and died might tell us something.

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