ms1 4000rpm ghost "limiter"

onnipekka · Post by **onnipekka** » Thu Mar 03, 2016 3:45 pm

Do you guys have any idea that what could be messing around in my ms1? When the engine heats up (90c) it won't rev over 4000rpm? Like new rev limiter on 4000rpm.. On neutral it spins easily the 6400rpm but not on gears. New sparkplugs.

slow_hemi6 · Post by **slow_hemi6** » Thu Mar 03, 2016 10:42 pm

RuneDK · Post by **RuneDK** » Fri Mar 04, 2016 5:13 am

diyautotune hall crank sensor?

onnipekka · Post by **onnipekka** » Fri Mar 04, 2016 5:15 am

Typical vr-sensor. I'll give you toothlog later today

onnipekka · Post by **onnipekka** » Fri Mar 04, 2016 12:06 pm

so here is a toothlog when the cancer hits. I hope this helps something. The most weird thing is that, when coolant is below 90 its easily goes to the REAL revlimiter (6400)

slow_hemi6 · Post by **slow_hemi6** » Fri Mar 04, 2016 6:23 pm

That .csv is not much help. Need to see your .msq and a full .msl datalog of the instance.

onnipekka · Post by **onnipekka** » Sat Mar 05, 2016 4:10 am

Oh my bad! here's a .msq. I try to get the datalog later today.

onnipekka · Post by **onnipekka** » Sun Mar 06, 2016 7:45 am

And here is a few minutes log

slow_hemi6 · Post by **slow_hemi6** » Sun Mar 06, 2016 9:15 pm

Ok so there is a factor you did not mention. Every logged run shown was 4k, but engine was in boost.Will it run over 4K but when not in boost? What is the plug gap?

onnipekka · Post by **onnipekka** » Sun Mar 06, 2016 11:09 pm

slow_hemi6 wrote:Ok so there is a factor you did not mention. Every logged run shown was 4k, but engine was in boost.Will it run over 4K but when not in boost? What is the plug gap?

Yes it will. About 0.6mm on NGK bpr7es.

onnipekka · Post by **onnipekka** » Mon Mar 07, 2016 1:12 pm

anyone..?

slow_hemi6 · Post by **slow_hemi6** » Mon Mar 07, 2016 5:37 pm

Change your plug gaps see if it gets better or worse. those plugs would be a 1mm gap from factory. You could be too close. I would try opening them up for starters.

onnipekka · Post by **onnipekka** » Tue Mar 08, 2016 6:51 am

slow_hemi6 wrote:Change your plug gaps see if it gets better or worse. those plugs would be a 1mm gap from factory. You could be too close. I would try opening them up for starters.

Thanks. Going for 1mm.

onnipekka · Post by **onnipekka** » Tue Mar 08, 2016 9:36 am

Did not help..

slow_hemi6 · Post by **slow_hemi6** » Tue Mar 08, 2016 4:58 pm

No change in the rpm or did it shift the point of break down? What type of ignition system is on the engine?

onnipekka · Post by **onnipekka** » Wed Mar 09, 2016 3:28 am

slow_hemi6 wrote:No change in the rpm or did it shift the point of break down? What type of ignition system is on the engine?

No change at all. Fords 6cyl wastedspark and 3 ignitionrocks inside megasquirt (I don't know if "rock" is the right term but in Finland we call them sytkäkivi=ignition rock)

slow_hemi6 · Post by **slow_hemi6** » Wed Mar 09, 2016 5:50 am

I used to use ford edis coils in wasted spark triggered by the "rocks". I ran a bit more dwell than you are using. 2 - 2.5mS if I remember correctly.

onnipekka · Post by **onnipekka** » Wed Mar 09, 2016 8:41 am

Hmm, I could try that. Thanks.

onnipekka · Post by **onnipekka** » Fri Mar 25, 2016 12:53 pm

Oh, 2.5 dwell and got into 6000rpm! Coil felt normal in my hand. should i go higher to get to 6500where my limiter is?

onnipekka · Post by **onnipekka** » Mon Mar 28, 2016 4:26 am

2.6ms didn't help..

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ms1 4000rpm ghost "limiter"

ms1 4000rpm ghost "limiter"

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