trouble with cold start

mugen715 · Post by **mugen715** » Mon Oct 12, 2009 5:43 am

hi,
my h22a civic having trouble with cold start.I can't start my car in the morning. I have to use my stock ecu p13 tto warm up my car. After the car has warm up, It is easy to start with s300 ecu. I attach my datalog to you. Could you help me to check what wrong with the cold start?Everything is fine with the air fuel ratio throughout the rpm range except this cold start. My h22a engine mod is:

skunk2 camshafts pro-series stage 1
skunk2 intake manfold
70mm throttle body
high compression piston (11.5 : 1)

thanx

allm0t0rGSR · Post by **allm0t0rGSR** » Mon Oct 12, 2009 8:59 am

thats not the datalog thats the calibration?

Post by **Spunkster** » Mon Oct 12, 2009 10:14 am

Why is your cranking fuel trim at 100%?

Thats doubling the fuel it should have at startup.

mugen715 · Post by **mugen715** » Mon Oct 12, 2009 5:41 pm

hi,
sorry, yup it is calibration.Initially im using 50% for my cranking fuel. But it cannot start up. THat why im increase it to 100%. But still can't start up. What do you think the problem?

Post by **Spunkster** » Tue Oct 13, 2009 9:28 am

start with the cranking fuel at 0.

lowblow · Post by **lowblow** » Thu Dec 10, 2009 2:44 pm

You need more air not fuel for cold start