ms2, supercharged 383, 50lbs injectors.
I can get the engine to fire relatively easy but then it dies within 3-5 seconds, and has to sit for up to 10 seconds then it would start again no problem but die again within seconds, ive messed with the VE tables, and even tried alpha-N. no difference. also I have ase cold start enrichment disabled. and the spark advance wire disconnected so it should only run on base timing. ive messed with base timing to no avail..
what can I look for?
runs and dies within seconds.
Forum rules
Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
-
devastator
- Experienced Squirter
- Posts: 333
- Joined: Mon Feb 11, 2008 10:19 am
- Location: Kinda near Tucson Arizona
Re: runs and dies within seconds.
Have you verified your timing with a timing light? How did you dis-able your cold ASE? What about your WUE? I strongly suggest switching back to speed density instead of Alpha-N. Does it run above idle with the throttle open a little?
Sandrail-ACVW 2276 cc, Turbo
MS-II W/spark burning E85
The sand must be punished.
MS-II W/spark burning E85
The sand must be punished.
Re: runs and dies within seconds.
I have verified timing, and ive changed it around, makes no difference.
I changed the afterstart enrichment to "disable ASE on hotstart"
so I must correct myself, I did not disable a cold start enrich, is there such thing?
I just skimmed through the megamanual and saw this:
"If the engine starts but dies after more than several seconds or minutes, then you need to adjust your warm-up enrichment."
so I must have skipped that step, however is it called something different in megatune 2.25+? i cant find a warm up enrichment table anywhere, a warm-up wizard is about it.
and cracking the throttle made no difference, maybe even worse. no throttle at all would seem to keep it running slightly longer.
I will investigate this WUE.. just gotta find it in megatune.. someone lend a pointing finger?
I changed the afterstart enrichment to "disable ASE on hotstart"
so I must correct myself, I did not disable a cold start enrich, is there such thing?
I just skimmed through the megamanual and saw this:
"If the engine starts but dies after more than several seconds or minutes, then you need to adjust your warm-up enrichment."
so I must have skipped that step, however is it called something different in megatune 2.25+? i cant find a warm up enrichment table anywhere, a warm-up wizard is about it.
and cracking the throttle made no difference, maybe even worse. no throttle at all would seem to keep it running slightly longer.
I will investigate this WUE.. just gotta find it in megatune.. someone lend a pointing finger?
Re: runs and dies within seconds.
thank you lance I read up in the manual. I read the part about adjusting the afterstart enrichment settings,
In that table, as described in the manual, should I change ASE cold AND ASE hot percent to 20 or 30% AND ASE cold count and ASE hot count (cycles) to 200 as well? or just the cold settings?
right now there is a zero in all boxes.
In that table, as described in the manual, should I change ASE cold AND ASE hot percent to 20 or 30% AND ASE cold count and ASE hot count (cycles) to 200 as well? or just the cold settings?
right now there is a zero in all boxes.
Re: runs and dies within seconds.
still no go. ive changed all the numbers from zero's all the way up to 200 with no difference.