I need some advice:
What map sensor should reads while engine is cranking?
I have E11V2
13B-RE street ported, 850/1680 combo
3bar map sensor reads -1 - 2 kpa while engine cranking.
I plug it onto nipple on UIM towards firewall.
4-5 ms pulse, engine floods of fuel, do not start
1 - 2 kpa reads when I turn on ignition
12 C ambient
stage bar +10 kpa
No correction maps
Thank you

 

-1 to -2 is about right. The engine is making very little vacuum when cranking so the readings will be slightly on the negative side of 0 kPa. Readings of slightly over 0 kPa are correct for key on, no crank situations.

4-5 mS is not anything out of the ordinary.

Does the engine have good compression?

To tune cranking fuel you'll need to get into the low speed maps near 0 kPa. Just like any of the other maps you can follow the red pointer around to see what load bars are being referenced for cranking. With the E11 you can also build an rpm range right around your cranking speed so that you aren't worrying about interpolation across two different ranges.

You might also look at the primer map to make sure it doesn't have some grossly huge value in it.

 

Thank you, C. Ludwig!
The engine is fresh rebuild. It started easily at summer when was +30C.
And it started couple of days ago when I installed CDI.
I think I killed my spark plugs from overflooding.
I'll recheck zero timing and change spark plugs tomorrow.

 

MAP sensor signal should not matter, as the Haltech uses the Primer (Cranking) map on cold start.
Unless you mess around with the default settings for cranking RPM's under 200RPM or so?


-Ted

 

The fuel tank was empty
Car starts now in 1-2 sec of cranking. Idle is smooth like a baby - 900rpm.
Vacuum -40 -- -50 kpa, Injection 2.5 ms, lambda 12.5-13
BAC works
Termofan do not work
Engine smokes (new rebuild)
OMP is responsive but plastic tubes are empty
I add a quart of 2T oil in tank

Haltech coolant temp sensor reads wrong values: + 7-8 C from real temperature. Close calibration is Hyundai Excel. I have a formula to calibrate my stock cosmo sensor.

 

About smokes:
I scared so much and add too much 2T oil
I scared about OMP and add some % in OMP map
Is it right map?

 

The primer function is just that. It has a large pulse width for the first injection pulse once the engine is cranked. One large pulse, one time. It is not a cranking map. Cranking fuel falls back to the basic fuel map.

 

Primer maps?
Who needs that. Just two little bleeps of the loud pedal before it cranks and the little plunger thing in the flux capacitor sqirts fuel down the 4bbl's is enough to get her going !!!

 

I'd give you a hard time about showing your age but I also not so fondly remember endlessly pumping carbs on cold Ohio mornings.

 

Car wont idles when I set BAC at 225-275 Hz. It idles when I set it at 33 or near.
Car idles at 800, at 500, at even 450.
But without BAC it dies.
Vacuum is -40 - 50 kpa. Is it too hight?