Ready to tackle the 6G72

dcreel · Post by **dcreel** » Sun Sep 02, 2007 2:53 pm

you're quite right, now I just need to figure out why.
Notice the last attempt fired up and got to 1700rpm. I had the pedal on the floor for that one. Alas, it's been so long I forgot most of what I read about fueling.

dcreel · Post by **dcreel** » Sun Sep 02, 2007 3:16 pm

it's ALIVE!

I had my injector PWM threshold at default for High Impedance, haha.

Post by **jsmcortina** » Sun Sep 02, 2007 3:25 pm

Nice.
Let's see a vid of the engine running on MS !

James

dcreel · Post by **dcreel** » Sun Sep 02, 2007 5:27 pm

jsmcortina wrote:Nice.
Let's see a vid of the engine running on MS !

James

I'm trying to get a good idle first. I have stock Ign and AFR maps, looking for fuel now. I have lots of reading to do, and some inspecting. Plugs are probably fouled, might be overdriving my injectors a bit with this new fuel pump too. I need an adjustable fuel pressure regulator, or at least a gauge.

I believe I am running very rich, or one cylinder is missing. I might even have a stuck lifter at this point, it has happened a few times in these cars.

dcreel · Post by **dcreel** » Mon Sep 03, 2007 10:25 am

I burned 2 of the coils pretty bad a long time ago. I thought they were ok because they were sparking, but they were not sparking strongly. I borrowed my wife's coils (non-turbo 3000GT) and I got better results.

However, I am still getting a lot of smoke. I don't know if it is coming from fuel or oil from the turbos. I think it is the turbos; the intake is very oily. I will try taking the turbos out of the picture and clean the intake out a little.

So far, it looks like the 6G72 code is a success!

UnaClocker · Post by **UnaClocker** » Mon Sep 03, 2007 1:05 pm

Did you drive on it at all? You'll want to run it all the way up to the rev limitter under load before declaring it a success. Just to be thorough, ya know..

dcreel · Post by **dcreel** » Mon Sep 03, 2007 1:21 pm

UnaClocker wrote:Did you drive on it at all? You'll want to run it all the way up to the rev limitter under load before declaring it a success. Just to be thorough, ya know..

I'm pretty confident the code is working as it should. The 6G72-specific part of this seems to be pretty successful, the rest of my trouble will be 'normal' megasquirt challenges.

I had serious hesitation issues under load before all this. Now I've got a lot more information available to help me solve that. If I can just get it running smooth in the mid-range, it will be better than what I had.

Here is a video showing the prequel to my 'megasquirt success story'.
http://www.youtube.com/watch?v=xKvQlpUt-FU

Post by **jsmcortina** » Mon Sep 03, 2007 2:31 pm

Thanks for the video - great to see the code work first time.

enjoy

James

dcreel · Post by **dcreel** » Mon Sep 03, 2007 7:13 pm

jsmcortina wrote:Thanks for the video - great to see the code work first time.

enjoy

James

No, thank you very much! Although I could have hacked it out myself, I am *very* happy I was able to just plug it in and run it this time once I got all the minor installation issues worked out. My car has been sitting for a year, and I've missed it more than I should. Now I have to sell my bike to fund my larger turbos and related items.

dcreel · Post by **dcreel** » Wed Oct 03, 2007 1:04 pm

Just a status update...

I have upgraded the turbos (TD04 15Gs), put in bigger fuel injectors (550cc), split the intake into seperate filters for each turbo, and installed an adjustable fuel pressure regulator. I have also wired up the IAC motor.

Now I have a pretty stable idle - generally within 50rpm but with an occasional drop of about 150rpm. The smoke is basically gone except for a little oil from the old turbos making its way through the pipes.

Thanks again for including this code!