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Discussion Starter · #1 ·
Hello,

It turns out my Evo X FQ360 has some problems.

Put a camera in cylinder 1 (the one nearest passenger side)

Turns out it has been hitting the spark plug, there is hole in the piston head and the rod is cracked, the wall of cylinder is scratched and it has most likely blown a piece of the piston head through the engine which is now rattling on the Catalytic converter.

Any ideas of cost for repair So far buying a whole new engine may be a cheaper option. Anything above £10K is not an option and keeping it to £5K or less would be nice.
 

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Was the car mapped?

With regards to 5 grand I'm not sure you will get it done for that. It's full engine out, strip, machine, cylinder head will need work depending on how bad, turbo could be screwed if a bit of piston has passed through it. All in all sorry for your bad news. You could try a wanted ad for a second hand engine but they rarely come up, plus it could also have problems.
 

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If you are going to rebuild, you might as well up-rate, so at least you have a full forged engine at the end of it, some gain for the cost, and will add to its sale value a little

But, how has it hit the spark plug, wrong plugs fitted? As above, was the car standard, did it have any mods at all, and was it remapped. The 10's dont seem to do well with basic mods, without a remap too

Stu
 

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Discussion Starter · #4 · (Edited)
No mods,

There was a problem and it just started running very rough after a period off the road for a few months.

I replaced the oil and the sparks plugs and it did not fix it. The plugs were supplied by indigo gt so i doubt they were the wrong ones.

I know everyone is probably thinking, home mechanic messed it up. But All I did was oil, filter and spark plugs. Which I have done lots of times before. I just did not diagnose the correct problem.

I posted this in march it has a video of rough engine. I have started to think about forged pistons etc

http://www.lancerregister.com/showthread.php?t=534355
 

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Well question is.. Did it make the noise before you put the plugs in and changed the oil?

Just re read it yes it did!!

However, after you changed the bits , did it get worse?
 

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No mods,

There was a problem and it just started running very rough after a period off the road for a few months.

I replaced the oil and the sparks plugs and it did not fix it. The plugs were supplied by indigo gt so i doubt they were the wrong ones.

I know everyone is probably thinking, home mechanic messed it up. But All I did was oil, filter and spark plugs. Which I have done lots of times before. I just did not diagnose the correct problem.

I posted this in march it has a video of rough engine. I have started to think about forged pistons etc

http://www.lancerregister.com/showthread.php?t=534355
Who's going to do the re-build if you go down that route?

Thing with the 10 is its not like the earlier engines where the engines are all similar 'evolutions' on the same base, so general knowledge on the 10 is less on here. Its probably going to need an experienced specialist to give you any ideas

So is there signs of impact on the plug/plugs? Was there any signs on the last set when you changed them. Is the damage only on that 1 cylinder?

If its impact, im trying to get my head round how it could happen to just 1 cylinder

Is there any chance the car could have had a remap before you owned it, that you didnt know about?

Did you get any pics of the damage from the scope

Stu
 

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Discussion Starter · #7 ·
I purchased it new from mitsubishi 80 miles on clock. I have thrown away old plugs now so cannot confirm either way, they all looked the same. It now has circa 25K on clock.

Autotorque did a service on it, then about 12 months later (it had done under 3,000 mile sin the time, it was off the road for 6 months) at this point the battery had gone dead

I think it was something to do with the battery being so low and when I started it up something was not in the right order or maybe sticking.

It had been turned over ever 1-2 weeks
 

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I purchased it new from mitsubishi 80 miles on clock. I have thrown away old plugs now so cannot confirm either way, they all looked the same. It now has circa 25K on clock.

Autotorque did a service on it, then about 12 months later (it had done under 3,000 mile sin the time, it was off the road for 6 months) at this point the battery had gone dead

I think it was something to do with the battery being so low and when I started it up something was not in the right order or maybe sticking.

It had been turned over ever 1-2 weeks
Ahh ok, so you know pretty much all the cars history then

I cant think of anything that would cause impact damage because the battery was flat/low. Saying that, im not sure of the possible effect of not being used on the mivec and the hydraulic tensioner

If 1 of the experienced traders dont offer any suggestions, its probably not going to be apparent till the engine is stripped

Stu
 
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