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Who has problems with hot starts?

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Old 08-09-2012, 01:16 PM
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Originally Posted by slow67
Try modifying the cranking fuel multipliers instead of modifying the cranking VE, as they are based on ECT (whereas cranking VE isn't).
Sounds good. I will play with the FA stage 1 table
Old 08-09-2012, 10:24 PM
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Are you having to crack the throttle a little to get it to start?
Old 08-09-2012, 10:31 PM
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It is so damn inconsistant, it is hard to tell. Sometimes that seems to help and sometimes it doesn't.
Old 08-09-2012, 10:35 PM
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I'm thinking maybe a leaky injector could be something to look at.. Everything else mechanical is sound. The fuel injectors are the only thing I haven't checked.

I bought the complete manifold online with fuel rail/injectors included. It came off of a 2010 camaro with 15 miles on it. It was a supercharger upgraded car at the dealership or a performance shop. Not sure which.

Should I unbolt the rail and turn the key on to see if any fuel is leaking? or how is this check normally done?
Old 08-09-2012, 10:49 PM
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I still suspect the cranking ve's to be to rich still and the startup multiplier could be making it worse. The cranking ve's are 80% richer the your main ve's. If you hold the gas pedal to the floor for flood clear does it start or try to start when doing so? Remember when the motor is cold it will start easier with rich conditions alot better than it will hot.
Old 08-09-2012, 11:03 PM
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Originally Posted by 98silvertacrbn
I still suspect the cranking ve's to be to rich still and the startup multiplier could be making it worse. The cranking ve's are 80% richer the your main ve's. If you hold the gas pedal to the floor for flood clear does it start or try to start when doing so? Remember when the motor is cold it will start easier with rich conditions alot better than it will hot.
Yea I understand that. I believe I have already stated in this thread that I used the VE spreadsheet that determines the proper cranking VE table values. With the lower values, it didn't help hot starts, nor did it hurt hot starts. It has always been hit and miss. I have retried the stock cranking values, which are very rich compared to my VE, but again, that didn't help or hurt starting. With the differences made in the tune, it always averages out to the same crap. Good cold starts, and shitty hot starts.
Old 08-09-2012, 11:08 PM
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How hot is the motor when you are having problems with it starting? above 190
Old 08-09-2012, 11:19 PM
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Yes normal operating temp in 110 degree weather is right at 198. But anything in between 160-215 degrees, it takes 2-3 cranks until it fires.
Old 08-14-2012, 08:24 PM
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@oakley man u have gremlins in your truck.. this and ur AC
Old 08-14-2012, 08:29 PM
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Originally Posted by WhiteChevy3
@oakley man u have gremlins in your truck.. this and ur AC
I know man. It bothers the **** out of me. If these two little things would go away, I would be home free.


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