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Discussion Starter · #1 · (Edited)

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First you should only log the items that you actually require and not everything. A few things the TPS normally goes from around 12% to 100% yours is over some funny range. At around 6300 you get a single cell that shows 38degrees timing line 89 and 112 and 113 therefore you might be doing something funny with the load and tables. Do you actually have a wideband sensor? What rom are you using as lots of the values look a bit funny.
 

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O2sensor readings either scaled or plain wrong, air volume doesn't seem right either. Not sure how EvoScan counts the misfire events but you seem to have them not in the rev range you were reporting your misfire. No fuel trims values I could see but I am new to EvoScan:).
 

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Discussion Starter · #4 ·
First you should only log the items that you actually require and not everything. A few things the TPS normally goes from around 12% to 100% yours is over some funny range. At around 6300 you get a single cell that shows 38degrees timing line 89 and 112 and 113 therefore you might be doing something funny with the load and tables. Do you actually have a wideband sensor? What rom are you using as lots of the values look a bit funny.
I did go ott with the logging first time around admittedly
:wallbang:

the tps is showing weird readings but not being used to it i didn't know if it was a bug in evoscan or that was just the way it reads.. you can see at cell 145 i come off the throttle and readings seemed consistent

i do not have a wideband and as far as i'm aware its a standard ecu with standard software but this car was a previous mlr members a long time ago so could have been messed with..

is there anyway i can find out the details or flash it back to standard and try again?

thanks for getting back to me :smthumbup
 

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Discussion Starter · #5 ·
O2sensor readings either scaled or plain wrong, air volume doesn't seem right either. Not sure how EvoScan counts the misfire events but you seem to have them not in the rev range you were reporting your misfire. No fuel trims values I could see but I am new to EvoScan:).
that's exactly why i have uploaded the data in a hope somebody can point me in the right direction.. i do not know where to look anymore

when you say the readings are scales what do you mean?

ps thanks for the reply :thumbup:
 

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They should be from 0.1 volts to 0.9 volts where lower means lean and higher means rich.
 

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You could down load the rom from the car and upload it here so i can see if it's been played with. Also take a screen shot of your evoscan screen so i can see how it's setup
 

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Discussion Starter · #8 ·
You could down load the rom from the car and upload it here so i can see if it's been played with. Also take a screen shot of your evoscan screen so i can see how it's setup
Do i need to download ecuflash or is there something on evo scan I do instead?

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Discussion Starter · #9 ·
They should be from 0.1 volts to 0.9 volts where lower means lean and higher means rich.
That's right I read that on on the comments box highest reading I had was 0.5v apparently should have readings no lower than. 07 on high load

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Discussion Starter · #10 · (Edited)
I have tried to read the ecu using evoscan ecuflash and have mitsubishi ecu unlocker running in background with no luck





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Discussion Starter · #11 ·
These plugs were pulled today and were in the car for the evoscan log taken yesterday


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You need really good, sharply focused photos of spark plugs to be able to tell anything from pictures. It is really difficult to do unfortunately. Old school tubers had magnifying glass with light source to help them to see inside the plug.

EDIT: From this photo the plugs look pretty much how they should...
 

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Discussion Starter · #14 ·
It's hard to tell from the pictures. Did you select the correct car rom in ecuflash?
I tried all mitsubishi ecu options the end nothing worked
I only have a 1.3u cable I have read I need a 2.0 cable to flash the ecu
Is there anything I can do again I'm working on the car at the moment

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Discussion Starter · #16 ·
If you're trying to read the 6 then yes you need the 2.0 cable
I'll have to sort that after the 1st sprint this weekend

Is there anything I can do with logging in evoscan in the meantime?

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Have you done the basics? Compression test on hot car, smoke test on hot car?
 

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Discussion Starter · #18 ·
Have you done the basics? Compression test on hot car, smoke test on hot car?
smoke test done and ok

not done a compression test - has not been suggested
 

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Was the smoke test on hot car? If on cold it has a smaller chance of picking up leaks on induction side if a leak was caused by a crack which is only apparent when hot. It is really difficult to say what can be wrong due to very little info from logs.
However, if the misfire is small it might that one cylinder not holding compression and giving you grief. I've seen it before. People were going mad as everything was fine on logs yet still it was misfiring. Dodgy pistons with ring landings failures causing ring flutter and loss of compression at high revs was an extreme example where only a motor strip down can reveal it.

You need to get all relevant logs first to make a good start and make sure all the basic tests were conducted and came back true :).

I have a car which has a factory design fault for example. Community was searching for years to find out the cause for oil usage. It turned out that oil jests cooling pistons were badly designed and instead of spraying at pistons they were spraying at the cylinder bores!

All manner of crap to go funny with internal combustion engines. Good thing about old cars is that there is huge amount of experience with mechanics and community and most problems were already encountered and solved so you have an almost certainty of finding out what is wrong and sorting it out :).
 
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