Print Page - Starting issue Cold or Hot.

Title: Starting issue Cold or Hot.
Post by: Tony C on October 27, 2009, 12:47:23 AM

just got a few bugs i need help ironing out,
Cant keep bothering poor dave via email. ::)

when you try to start the car when cold if you dont touch the throttle it just cranks over and over and over, it may cough a few times but you also get a pop in the intake or exhaust every so often,
if you floor it it dont do anything,
but i tried feathering the throttle lightly on the 4th attempt this evening and it seemed to help and it fired near on instantly while lightly feathering the throttle,
when hot you have to crank it over a few times to, but it will cough a few times as above with the pop but will then fire and then run,

im running 1.1.44 firmware

any ideas?
Engine is stg3 high comp (around 10.5:1cr) 4.6 v8 with stg3 heads and a crower high lift cam,
Dave has done a sterling job getting the ecu repaired and the car to run,
just need help ironing a few things out,
Have the latest MSQ and datalog of the cold starting tonight if you want it posting up?

Title: Re: Starting issue Cold or Hot.
Post by: MWfire on October 27, 2009, 01:56:17 AM

Post you msq and i will send new msq.

Title: Re: Starting issue Cold or Hot.
Post by: Tony C on October 27, 2009, 03:10:19 AM

email sent ,
thanks.

Title: Re: Starting issue Cold or Hot.
Post by: MWfire on October 27, 2009, 03:37:14 AM

Sent back.

Title: Re: Starting issue Cold or Hot.
Post by: Tony C on October 28, 2009, 12:08:14 AM

wow
it started within a few seconds of cranking when cold. and it idled reasonable too,
didnt like it when hot though,
have sent you the cold and hot start datalogs from tonight mate along with the msq,

Thanks for the help,

Title: Re: Starting issue Cold or Hot.
Post by: Tony C on December 04, 2009, 11:05:09 PM

thought i should update this post as MWfire has done a cracking job off forum assisting in getting the car starting from hot/cold,
starts a treat only prob i need help with is, while cranking from cold, if it does not catch and you need to crank it over again im getting terrible kick back from the engine as if its locking up,
its fine when hot,
any ideas? is it somethimng to do with the cold settings?

Title: Re: Starting issue Cold or Hot.
Post by: [email protected] on December 06, 2009, 12:24:29 AM

I'm betting cranking advance on that one, what's it set at currently?
I've seen 4deg on cranking before.

Rob

Title: Re: Starting issue Cold or Hot.
Post by: Tony C on December 06, 2009, 12:46:14 AM

Hi Rob,
its set at 7.00deg mate,

Title: Re: Starting issue Cold or Hot.
Post by: Sprocket on December 06, 2009, 12:57:43 AM

I suffer the same. I doubt the crank advance has anything to do with it as it doesnt happen in 1.0.xx firmwares with the same crank advance. Its a bug the firmware.

http://195.159.109.134/vemsuk/forum/index.php/topic,683.msg7829.html#msg7829

http://195.159.109.134/vemsuk/forum/index.php/topic,1037.0.html

Title: Re: Starting issue Cold or Hot.
Post by: Tony C on December 06, 2009, 03:59:26 AM

this is the first version i used with a 36-1 set up,
the previous version 1.0.79 (i it think) was only used for the fuel side as was still using a dizzy,

Title: Re: Starting issue Cold or Hot.
Post by: Denmark on December 06, 2009, 06:21:29 PM

yes that a speciel vems feature, with subaru trigger, and cold, that makes it impossible to start >:(

Title: Re: Starting issue Cold or Hot.
Post by: Denmark on February 02, 2010, 10:18:09 PM

Did any og you cure the cranking/Kickback problem ?

/Skassa

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VEMS => Calibration & Mapping => Topic started by: Tony C on October 27, 2009, 12:47:23 AM