Mitsubish Lancer Evolution Forum - EvoTuners.net - Yes, it took you long enough to figure out you've been had :)

WANTED · 04-01-2008, 07:05 PM

Well, apparently something went a miss with my buddy's build. We're not sure what caused it yet but we will look into it a little further once he's done crying about it.

Apparently he went to start his car this morning, and it was running extremely lopey and barely at all. Plus it was making this really weird clanking noise the likes of which neither of us ever heard. He called me over and we did a compression test.

We only got a reading in the number two cylinder, and it was perfect. The other cylinders didn't get any reading at all. I thought it might have been my compression tester, as it is pretty old and I bought it from the pawn shop as I'm a cheap SOB.

Boost leak test came out good too. So, scratching our heads, we tried running the car and driving down the block, and it ran absolutely terrible. At least we made it back into the driveway, but it took us almost five minutes with the throttle absolutely floored. The car sounded like a machine gun, I swear.

So, since I had some time on my hands, I helped him remove his head so we could further investigate and this is what we found.

To be honest, neither of us understand what's going on. All his internals look absolutely perfect. We see no signs of detonation, nothing bent or missing, all fluids topped off.

You guys look and tell me what you think. Personally, we're banging our heads on the wall with this.

http://i188.photobucket.com/albums/z...3/PICT0315.jpg

Any and all thoughts would be immensely helpful.

WANTED

Evolvd · 04-01-2008, 07:25 PM

Picture don't work...

And it sounds like a spun bearing.

WANTED · 04-01-2008, 07:37 PM

Here's the picture.

Evolvd · 04-01-2008, 08:20 PM

Well the first problem I can reasonably guess is that the pistons are way out of whack. Unless I'm way off don't most 4-cyl. stroke the 2 and 3 piston at the same time while 1 and 4 are 180 degrees out? Having three pistons at TDC and one at BDC would cause a severe rotational vibe.

Put a large ratchet on the crank pully and turn the motor over by hand. Also may want to pull the oil pan...got a sneaking suspicion that one or more of the rods has become disconnected from the crank.

tobz · 04-01-2008, 08:28 PM

Quote:

Originally Posted by Evolvd

Well the first problem I can reasonably guess is that the pistons are way out of whack. Unless I'm way off don't most 4-cyl. stroke the 2 and 3 piston at the same time while 1 and 4 are 180 degrees out? Having three pistons at TDC and one at BDC would cause a severe rotational vibe.

Put a large ratchet on the crank pully and turn the motor over by hand. Also may want to pull the oil pan...got a sneaking suspicion that one or more of the rods has become disconnected from the crank.

Agree.

JustDSM · 04-01-2008, 09:43 PM

I can't see the pics, but if you've got 3 pistons at TDC you've got some serious issues..

tobz · 04-02-2008, 07:26 AM

April 1st?

BAMBAM · 04-02-2008, 07:50 AM

Quote:

Originally Posted by Evolvd

Well the first problem I can reasonably guess is that the pistons are way out of whack. Unless I'm way off don't most 4-cyl. stroke the 2 and 3 piston at the same time while 1 and 4 are 180 degrees out? Having three pistons at TDC and one at BDC would cause a severe rotational vibe.

Put a large ratchet on the crank pully and turn the motor over by hand. Also may want to pull the oil pan...got a sneaking suspicion that one or more of the rods has become disconnected from the crank.

Agree Take some pictures of the crank for us. with the oil pan droped. Thanks

WANTED · 04-02-2008, 09:54 AM

I'll try. I don't have much free time right now, so it will take me a little while.

Could this have been caused by the fuel he was trying to run? He mentioned something about biodiesel to keep the engine temps down.

SuPeRNeT · 04-02-2008, 10:36 AM

Quote:

Originally Posted by WANTED

I'll try. I don't have much free time right now, so it will take me a little while.

Could this have been caused by the fuel he was trying to run? He mentioned something about biodiesel to keep the engine temps down.

??

Biodiesel??? Not good

BAMBAM · 04-02-2008, 11:31 AM

Quote:

Originally Posted by WANTED

I'll try. I don't have much free time right now, so it will take me a little while.

Could this have been caused by the fuel he was trying to run? He mentioned something about biodiesel to keep the engine temps down.

Unless he is tuned for that and has the right fuel system to run it then YES. that could have something to do with it.....

JustDSM · 04-02-2008, 11:32 AM

I made the power listed under my name on Biodiesel.. I can't see that being the problem.

SuPeRNeT · 04-02-2008, 11:42 AM

You mean e85 is biodiesle?? I thought they were 2 different gases..

BAMBAM · 04-02-2008, 12:04 PM

Quote:

Originally Posted by JustDSM

I made the power listed under my name on Biodiesel.. I can't see that being the problem.

Yes Justin it doesn't hurt but you do need the tune and fuel right other wise something bad could happen right?

WANTED · 04-02-2008, 12:56 PM

Just out of curoiusity, what kind a/f do you tune for when running it? He was running 16/1.

So, I pulled the engine, dropped the oil pan and found this. I didn't remove anything else at all, internally. Everything looks pretty clean to me, although the crank nearly landed on me when I dropped the oil pan. Is it supposed to do that??

BAMBAM · 04-02-2008, 01:02 PM

Quote:

Originally Posted by WANTED

Just out of curoiusity, what kind a/f do you tune for when running it? He was running 16/1.

So, I pulled the engine, dropped the oil pan and found this. I didn't remove anything else at all, internally. Everything looks pretty clean to me, although the crank nearly landed on me when I dropped the oil pan. Is it supposed to do that??

Did you take the caps off your self or are you tell us that there were none? Plus did you take the pistons out? Were they connected or not or Loose?

WANTED · 04-02-2008, 01:13 PM

You're looking at exactly what I found. Was there something else supposed to be there? It looked right to us, I think.

-EpicEVO- · 04-02-2008, 01:19 PM

Wow i'm suprise how clean the block is. it almost looks like it just came out of a machine shop, maybe they just welded the 3rd piston in place on the cylinder wall?? Try just taking the spark plug out in cyl #3 and just run it on 3 cylinders, maybe it won't have that miss anymore??

16/1 is a perfect a/f ration for biodiesel. Should run fine on 3 cylinders.

Im impressed after you grinded the fip off the oil pan, that you remembered to re write the clearance specs on the block so you wouldn't forget.. NOW THATS THINKING..

Mark

WANTED · 04-02-2008, 01:26 PM

Will that work?? I've never heard of that but I'm willing to try anything to help a buddy out. He just needs his car running by this afternoon for work tonight. I'll put it back together the way I found it.

Quick question. When I put the the engine back together and try your suggestion, do I have to use all the bolts or will I be okay if I'm missing a few? I think he lost twelve or so bolts.

-EpicEVO- · 04-02-2008, 01:32 PM

i would try to find some just to put them in there place even if they don't fit they will at least help your clearances..

And ya i'm sure it will work, if fact you may pick up some HP in the cylinder because there will be so much compression. I did the same thing on my 1st gen a few years back, but on of the machine shops welds broke and destroyed the short block so i hope you have a reliable machine shop that welded it!!

mark