Strange problems in ka24de-t world???

[95Gstman]

Well guys I have been trying to figure out why my car is running rough as of late. I thought that I had a leaking number for injector because that spark plug was black and I could pull the spark plug wire off and the car would not change. So I replaced the o-ring on that injector, cleaned the spark plug and the car ran great for all of 5 minutes.

When it started running rough again I proceeded to pull off spark plug wires and now the number 1 cylinder would cause no effect to the engine if you removed that spark plug wire. I replaced that o-ring on the injector and on the rest of the injectors on the car. The car still ran rough but after I replaced all of the o-rings I started pulling spark plug wires again and now the number 2 cylinder is causing no change to the engine.

What could cause a different each time to act up? The spark plug wires are ngk and are almost brand new. When I pull the wires off, I can put the end of the wire to something metal and see the spark jump so that tells me that all of the cylinders are getting spark.

Could it be that I have just messed up all my spark plugs and now each one miss fires when it feels like it?

I just don't know what would cause a cylinder to act up but then be fine and different cylinder to then act up. The car ran fine with the turbo for a while now so I know that everything is setup okay.

Here is my setupt28450cc injectorswalbro 255z32 mafsmicstock bov recirromisburning ecu.

Any help would be appreciated thanks.

[95Gstman]

O yeah, and I am running the stock fuel pressure regulator. Do you think that could have something to do with it?

[95Gstman]

I am bumping this because I would like to get some ideas to try today. Thanks.

[blacksrjdm]

Start by changing the plugs, cap, and rotor. Check your compression, could be leaky head gasket, leaking inbetween the cylinders. Could be alot of things, but start with changing the plugs, cap and rotor.

[tctomasc]

check cap and rotor. its 2 bolts, and really easy to tell if its worn. the center button over the rotor on the cap should be poped up, and if you press it, it should depress. the points on the cap also should not be worn down, and same with the rotor. if there are burns, replace them.

[95Gstman]

Well I replaced the cap and rotor and the car still ran rough and the number 2 cylinder was still not working correctly. So I decided to swap the #2 and #1 injector to rule that out as the cause. Right after I did that the car ran the same and the #2 cylinder was still not working correctly and also right after I did that the car is smoking blue smoke like crazy!!!???

I was running the car before I swapped the number 1 and 2 injectors and it was running rough but there was no smoke. Right after I swapped them, now it seems the car is burning oil? I have no idea what is going on.

Any help would be greatly appreciated.

[hpmachine]

Definitely do a compression check. Cross your fingers.

[95Gstman]

I plan on doing one soon, but piston rings usally don't just go bad all of a sudden. I mean what else could it be though? I am so frusturated at this car. Keep the ideas coming. Thanks.

[95Gstman]

Well here are the compression results.cylinder #1 150psicylinder #2 225psi (you can actually see oil if you take the spark plug off and look down with a flash light) that is why the compression is so high.cylinder #3 150psicylinder #4 150psi

So, what do you suspect is the problem. A friend of mine believe that the turbo seals are leaking? Anyone have any feedback. Thanks.

[E7-S14]

headgasket or rings i believe...

if oils getting into your cyl... waiting for someone else to chime in..

i recently ran into low comp on one cyl. put oil in and psi shot up.rings/ringlands.. one or the other is the culprit..

[95Gstman]

The only thing about that is it has never smoked before. It literally went from no smoke to smoking like a chimney in the five minutes that it took me to swap the number 1 and 2 injectors. Wouldn't piston rings wears out over time? I just don't get it.

[E7-S14]

well all it took for my car was one hard launch and things were f***ed...but i have no smoke out my exhaust.. just blowby oil burning off anything hot.

Still waiting on someone else to chime in on this ha.i know some stuff but could be wrong here

[95Gstman]

I just remembered that I did not have the throttle body opened whenever I was doing the compression check, so all of those numbers would actually be higher. But that does not really change a whole lot. Just some more info that I thought I might add. I really, really, hope it is not the piston rings.

[95Gstman]

Well I don't think it is the turbo seals because I pulled off a section of intercooler piping and there is absolutely no oil in there.

[95Gstman]

Well I guess it was due to the fact that it was dark whenever I was working on my car last night, but today I discovered a large oil leak where the turbo connects to the manifold. What causes this?

[scheffler]

Hey someone that can should move this to the KA-T fourm.

Ok so your oil ? what caused the leak in your turbo. well if you dont have a oil restrictor fitting in your oil feed line then that could be why or if your return line is blocked/ clogged. Oil in #2 you could also have a bad valve seal that would alow oil to leak in. Also what heat reange are your plugs? you could just be running to hot of plugs a fouling them out. Also what is the plug gap.

[95Gstman]

Yeah when I posted I was trying to post in the ka-t forum but put it here by mistake.

I am not sure why there is oil coming from the turbo/manifold seal. I have been running this setup for about month and have not had any of these problems prior. I am also running bkr7e's which is what most ka-t guys are running. The plugs are gapped at 35.

[95Gstman]

I will let the pictures speak for themselves.

[95Gstman]

I did another compression test with the car at wot like I was supposed to do. I also wanted to note that I did not let the car warm up first because I did not want the oil that is getting into the number 2 cylinder to skew the numbers like last time. Here are the results that I am very happy about.

cylinder 1 170cylinder 2 165cylinder 3 170cylinder 4 170

So, I do not think it is the rings. So does this mean that it has to be the valve seals? Also, if it is the valve seals do you think that I could get away with replacing them without taking off the head or do you think that a valve guide is messed up and I would just wind up ruining more seals?

Another thing that I would like to mention is that the two owners before me and myself had been religiously using 10w40 synthetic in the car before the turbo was put on. Then when I installed the turbo I used 10w30 conventional. (this was because we forgot to get oil and that is what we had in our shop.) I did not think it would be that big of deal, but do you think that could have something to do with the seals all of a sudden going bad? Thands for all the help guys I really appreciate it.