What did the car do when it nose dived? Did it shut off, stall out or something else? How is the oil level in it. If it was smoking it could be oil, coolant ect. Black smoke, white, blue?

Also why couldn't you get a compression reading. Did you perform a compression test and it was zero compression or was it just a matter of you not being able to test for compression? If it has no compression chances are you jumped time and bent the valves.

untouchablecc said:

What did the car do when it nose dived? Did it shut off, stall out or something else? How is the oil level in it. If it was smoking it could be oil, coolant ect. Black smoke, white, blue?

Also why couldn't you get a compression reading. Did you perform a compression test and it was zero compression or was it just a matter of you not being able to test for compression? If it has no compression chances are you jumped time and bent the valves.

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It just nose dived then had major loss of power, when i gave it gas it just felt choppy amd sluggish, i popped the hood and it was a little smokey under there, the smoke was white ( both under the hood amd from the exhaust, i tried a compression tester, but i believe my tester is messed up so that may be the problem on that end, but i checked the timing and everything is where it should be

My question is if you knew it was smoking then why did you drive it at 85 mph? When you thought it was running rich what was the color of the smoke? You need to compression test and boost leak test. Where was the smoke coming from after you popped the hood? Have check the turbo, plugs, etc? More info needed.

Type1DSMr said:

My question is if you knew it was smoking then why did you drive it at 85 mph? When you thought it was running rich what was the color of the smoke? You need to compression test and boost leak test. Where was the smoke coming from after you popped the hood? Have check the turbo, plugs, etc? More info needed.

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Well i was on the interstate plus i was coasting down hill, the turbo has a little play in it, the plugs looked decent but i changed them out anyway, as far as the hood smoke i was a little to heated to look close. And to be honest with the turbo questions its my first turbo car so i may need to ask what something means

No problem we are here to help man. How's the oil look but definitely need to compression ASAP and boost leak test.

Type1DSMr said:

No problem we are here to help man. How's the oil look but definitely need to compression ASAP and boost leak test.

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The oil was low and a little black, but i did a full oil change once i towed it home, and i thank you for the help most forums are just troll pages

Did you take off the upper timing cover and then manually turn the crank clockwise to TDC? Then you can see if the cam gear dowel pins are at 12:00 and the cam gear timing marks are facing each other evenly in the middle and parallel with the top of the head. If so, then your mechanical timing is OK. If it's off even a little then you have some major work to do. You can use a 22mm socket to spin the crank. Good luck, I was reserve too.

Fluids are a must at first to check and replace if needed, I do that on any car I buy. As far as smoke you seem correct that it could be a turbo seal gone bad but that necessarily wouldn't account for smoke being under the hood unless you have exhaust leaks. I would do a compression test followed by a boost leak test to start off then see what your results are and go from there.

As far as sluggish and choppy do you mean cutting out, not accelerating? If you describe what happen better we might be able to help you a bit more.

Do a BLT and check for a intercooler coupler that has slipped off. Mine ran horrible when I blew one off the other day.

I dont know how to do a boost leak test, as for the choppy sluggishness it had, when i got on the gas it just seemed there was an interuption in the fuel, in a way i guess i could refer to it as a car runnng out of fuel and dying, but it was alot quicker to jump back, i know its confusing the way im explaining this but if you follow the lines here, with the higher line being acceleration it may help.
Car running out of fuel: --_________---________----_______,

How my car felt after releasing the clutch: --__-__-_-__---_-.
I know that example is retarded but im terrible at explaining things

And i have checked the fuel pump it works fine

http://www.dsmtuners.com/threads/boost-leak-test-how-to-with-boostpro-net-tester.169435/

Check all your couplers on your piping and make sure everything is hooked up and nice and tight.

I decided to pull the motor apart, i have warped valves and piston #1 is damaged, not the news i wanted but hopefully thats all thats wrong

Upload pics if you can. Sorry to hear it. I.ve been there like many of us. I pretty much just spend the 150-200 on timing belt kit right off the bat anytime I buy a DSM so I don't have to go through all that.

How bad is the piston damage? Did it just tap it or did it crack the piston? If it didn't destroy the piston an just put some small marks in it you could probably get away with a rebuilt head. If you cracked the piston then you are pretty much into a full rebuild or looking for a complete engine to drop in. You could possibly find a used set of pistons and replace and hone out the bore to get you going. I have done it on a motor with bad rings but it won't be as safe as a full rebuild.

untouchablecc said:

Upload pics if you can. Sorry to hear it. I.ve been there like many of us. I pretty much just spend the 150-200 on timing belt kit right off the bat anytime I buy a DSM so I don't have to go through all that.

How bad is the piston damage? Did it just tap it or did it crack the piston? If it didn't destroy the piston an just put some small marks in it you could probably get away with a rebuilt head. If you cracked the piston then you are pretty much into a full rebuild or looking for a complete engine to drop in. You could possibly find a used set of pistons and replace and hone out the bore to get you going. I have done it on a motor with bad rings but it won't be as safe as a full rebuild.

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One piston is a little cracked and there are scrape marks on another, my uncle does head work so im in luck there, but i have to leave town for a few weeks, ill get some pictures up as soon as i can

Ugh that sucks. Yeah I wouldn't run that piston. There is also a chance the others could have some damage. Get a good used set of stockers on the for sale sectoin or order NPRs. It sucks having to rebuild a motor when you need a car, but it sucks way more having to do it twice. Try to do it right the first time around. As far as your uncles machining experience. Is he familiar with a 4g63t head. If he is used to old school V8s they are not the same. Typically you want to get a shop that has some experience with the type of engine you are working with.

I would get the head checked with a machinist straight edge to check for warpage. New or used un bent valves. You may need new valve guides if they cracked. Valve seals (mitsu or felpro, Ive used both). Standard valve job, most shops do a 3 or 5 angle.

I almost forgot. Find the cause of your engine damage. Inspect the timing belt, 2 pulleys and hydraulic tensioner. One of those had to fail. Replace all of the components. It couldn't hurt to do a water pump while you are at it.