MSefi.com read only forum (Jan.15,2018)

Hi again guys,

I tried going higher with the cranking pulse widths and then after awhile I went low again and no fire at all.

Just finished trying this again and after about 5 mins of trying again the fuel pump is staying on full and the injectors are clicking away all the time. And now the the ...

Today I tried no prime pulse and still nothing. Even after awhile of cranking I pulled the inj fuses out to see if it would just run a little but it just kept cranking the same way. I also tried to take a lot of the cranking pulse widths right down to 2ms and even lower but with those compensations ...

Thanks Tony,

Just tried this today and it didn't really make any noticeable difference. I've had the cranking in my MSQ set for 10deg for awhile now just to help the motor start up better but I think it's mostly a fuel problem I'm dealing with :(

I haven't posted the MSQ because it kept changing ...

Thanks

Maybe my injector placement is wrong? Could it be hitting the walls and just dribbling in the cumbustion chamber? When the bus runs maybe there is enough suction/vacuum to bring the spray towards the back of the valve more? I've seen CB Performance selling them inboard just like the one I've built ...

Haven't driven it in a few days so I thought I'd try to start it again. There wasn't even a hint of it trying to start. I tried lowering the cranking degrees and that didn't do it. I can smell fuel coming out the tailpipe and little puffs of smoke out the tailpipe but still no fire in the hole.

Any ...

Also it backfires a few times while trying to start. Does anyone know what causes this? It does it every now and then. Always in the mornings never when hot. Should I be retarding it a bit more than my cranking at 10 degrees?

Set ignition at 5-10 BTDC until you get reasonably close to a decent ...

Hi guys,

Tried it out again this afternoon and it seems as though it's getting easier to start. I did a log for anyone to have a look and it smelt a little rich while cranking again. I did go up in .2ms increments but didn't really help I don't think. So I went the other way and then it seemed to ...

Cut the pins and ran the newer laptop and ran TS again. Got it running a little easier and then also tried that hot start with '0' in the 'Cranking Position'(extended)(steps) bin and it didn't do the high rev when hot problem. This will be nice when I start driving her again. :)

Didn't start ...

Just to confirm.........cut pins 1 and 4 if I wish?

panel,

Also, I think I told you earlier that the start value for the IAC wouldn't matter for a PWM valve, but I now think I may have been wrong. I think this may be the source of the very high revs you are seeing on hot restarts. So you might have to experiment with that value to get it workable ...

Lance and others...

Just got home and thought I'd get at it while the bus is been sitting. Cranked for awhile and then slowly dropped the 'cranking pulse widths' down until she started. I did open the throttle a little and the engine kinda sounded like it was going to start so I dropped them down ...

panel,

Okay, then you need to check if it is just the comms that are being lost, or if MegaSquirt itself is shutting completely down. I suspect the later, and the fuel pump cycling is a result of this <edit>looking back at your logs, I can see the reset almost every time you crank</edit>.
Lance ...

Got it running! Swapped back to an older laptop........re downloaded the s19 file,MS Download 2.00 etc and re-loaded one of my latest MSQ's and within a few minutes got it to start.When I first started out running the MS-II this year I was using Megatune, then borrowed a faster laptop so I could run ...

Lance wrote:panel,

It sounds like the fuel pump relay may be dying. That would explain a lot (if it's true).

Lance.

It's the same as last time where it looses it's connection and goes 'off line' and the laptop doesn't connect to the MS.

- We don't actually know if this is a cold start problem, or if something has happened. So if this was mine, I would:
--> reload the code,
--> reload your MSQ,

Lance.
OK ....just did this and tried to crank her over again with no luck. After a couple of tries now the pump keeps going on and ...

OK guys...........uploaded a couple of logs for ya. Pulled the plugs last night dried them off though they didn't look very wet. Got home tonight and cranked the motor with everything out pulled the fuses etc and still no go. There seemed to be a weird glitch I've never seen before that the Throttle ...

I've pulled the plugs and I'll clean them up and dry them off. I'll also do the injector fuse pull and crank her over a few times. Thanks for taking the time out to reply. I'm glad you guys are patient with me and although I might be frustrated I'm glad I'm also a very patient guy. This will help me ...

I'm still having problems guys. I just can get it started at all :( Can someone verify if it's correct to have the cranking pulse width's match each other in the tuning software gauge and the chart? See below to see what I mean. While cranking I have 4.6ms in one of my boxes but the gauge on the ...

I think I might have noticed that at one time I had 2ms in my hot and cold (to try) cranking pulse widths and noticed in TS that it was higher than 2ms while cranking. Shouldn't it be 2ms or less? I can try this again if someone wants me to verify? Or what causes this? Is it a battery compensation ...