E85 long warm start

[james1595]

As the title says, i just swaped to e85 and cold starting seems fine, fires right up. But when i went to start it after warming up, it took about 10 seconds to crank. Anyone know what is needed different startup wise between e85 and 93?

[LilSick]

yes...

about 35% more fuel

[james1595]

Its been tuned, all the injector data has been updated. But why would the cold start be ok but warm struggle? Ill post the tune when i can to see if something was missed

[james1595]

12-30-2023 e85 v2.hpt
here is the tune

[fixit]

you need to scale the start up table... old/new injector size.. take that percentage and multiply it across all the values in the table

fuel, general, start up injector pw, start up base

[veeefour]

What injector?

50ms cold and 9ms warm - try reducing warm even more. When cranking is prolonged it usually means its too much fuel. A good hint when you pop the throttle and it helps...

Your main STOCH is still set to 13,88

[james1595]

I had 392 injectors. Now i have 1000cc injectors. And i could have sworn it was set to around 14.7.

[LilSick]

When cranking is prolonged it usually means it?s too much fuel.

88

That was not my experience with ethanol so I will disagree. Isn?t there a chance adding pedal helps add fuel too? The motor is not spinning 500 rpm at that point

[veeefour]

That was not my experience with ethanol so I will disagree. Isn?t there a chance adding pedal helps add fuel too? The motor is not spinning 500 rpm at that point

Not sure what do you want to highlight here? RPM for cranking usually stays around 200.His TB multi tables all set to 1 so...again funny numbers...

Does not matter what fuel, rich is rich just at different stoich. Nothing to disagree - straight fax.

[james1595]

So do i need to add fuel or take away fuel?

[LilSick]

I am not there but you would use trial and error as you have no idea which side yer on

What is ambient temp?

[edcmat-l1]

So do i need to add fuel or take away fuel?

Easiest thing is as stated previously, crack the throttle slightly. 10-20%. If it starts up instantly or easier, you either need more cranking airflow or less cranking fuel or a little of both. At that specific temp, not globally. That's typically the case with big injectors. It's rarely MORE fuel it needs.

[james1595]

Its been in the 60s and 70s. Also yes, hitting the throttle helps start it when warm.

[james1595]

The issue was to much fuel. I added 50% more startup airflow, and took away 20% startup fuel in the 90+ degree coolant areas of the table amd now starts like it should.

[veeefour]

Great...