Built 2.4L gone bad at 300 miles?

[eclipsegsxccca]

Ok here's the deal I installed a 4gcs 2.4l motor and everything was fine(went to 140 mph. no prob.) I used castrol 10w30 to break in the motor and I changed it at 200 mi. (I currently have 300 miles on this motor) I also changed the spark plugs at the same time cause its running rich.(NGK-R bpr6es ?)<<<was running 7's on the break in. Last night I did the emissions removal with the egr still bolted on just not hooked up, and p[lugged the vac ports. I'm going down the highway to test it it was running great, I took it up to 100mph and all the sudden I feel a power loss so I back it down and turn around to go home . when I got into some light I notice thick white smoke bellowing out the tail pipe so I stopped to check it out. >>oil is everywhere I think from the temporary k&n breather, and the vac. caps off of the throttle body. First thought oil got into the intake, correct? Far from it, I checked compression on 6-16-05(190,160,190,200)just now I checked again to see if my rings are bad, when I pulled the plugs #4 had some small metal balls on the tip, 3 and 2 were fine but #1 half of the white piece around the core was gone and the tip was melted together. compression this time(0,180,30,190) What I want to know is did I break a rod or did my rings get to hot and disintegrate?sorry this was so long just wanted to get it all in here for more accurate advice.

 

[eclipsegsxccca]

for some reason it did not post my complete thread. The motor is bellowing out white smoke and stalls when I come to a stop. Your help is greatly appreciated.

 

[DJpHGotBanned]

Sounds like there were some tuning problems. Did you use new injectors? Other than that I'm curious of what your ring gaps were? You should be pretty loose with them with the larger bore and more imporantly with using a turbo and more power than stock.

What all did you have as far as the fuel and ignition system? Any other build numbers (bearing clearances, gaps, etc etc.) The reason I ask is becuase I have a 2.4 (pickup 2.4L 4g64 6 bolt ) ready to go into my car.

 

[bigjangin]

What happened between the two times you checked the compression? Melted spark plugs sounds like something was very wrong(tuning) causing detonation. If your car is blowing out white smoke, that would indicate burning coolant, caused by a blown headgasket(which in turn was probably caused by detonation).

Anyways, if you really do have zero compression in 2 cylinders, it would be time to take the head off and really find out what happened. Also, did you ever find out why you had oil in your intake tract?

 

[FourGdrvr]

Usually if you have 0 compression, typically its the valves that is damaged. Whatever you were using to tune the vehicle with is improperly tuned. Metallic specs that exist on the tip of the plugs are telling you that it was knocking. If you have the porcelin (white section) of the plug missing, that is from detonation. Is this on Denso spark plug? Typically Iridium? I have seen more porcelin break from Denos Iridium plugs. Stick w/ NGK as they have stronger porcelin material....though they can break too as they are not invincible. Melting spark plug tip also tells you that cylinder 1 was way too hot.

Sounds like a tuning problem than a build problem.

 

[eclipsegsxccca]

I was using ngk bpr7es the first time I checked compression. Then I switched to ngk-XXX6es (stock heat range)because it was running way to rich, and changed the oil. Like I said I went 140mph on the 7es spark plugs, then did the emissions removal, took it for a test and then at 100mph it just lost power

 

[olmytsi]

Why are you going 140mph? Are you trying to build a top speed car or something? Things break easily at high speeds specially if the motor isnt completely broken in.

 

[90REkTSi]

Like I said I went 140mph on the 7es spark plugs, then did the emissions removal, took it for a test and then at 100mph it just lost power

Doesnt sound like a smart thing to do while BREAKing in the engine! Especially when you only have 300 miles on the car!

 

[huafist]

Yeah, I'm gonna go ahead and agree with everyone else here - doing 100+ mph on an engine that's not even broken in yet is retarded. You smoked it. Cylinder walls are probably glazed, head gasket blown, and who knows what else. Pull the head an survey the damage.

 

[bullettdsm]

100+ with no break-in, I would not do. BUT this is a tuning problem! Statement.
MB

 

[timloomis]

those "little metal balls" your talking about are pieces of rings,pistons,and the head due to detontion.

 

[eclipsegsxccca]

ok I know it was not smart to go 140 but it did it just fine with no prob,it is when I adjusted the fpr. and the little balls are because of the spark getting to hot obviously, but that cyl. is just fine (190 compression). I was only running the stock turbo, injectors,intake.It is when I turned the fpr out more it ran better and my a/f ratio guage said the ratio was still rich, I think it was malfunctioning. after that is when I was just cruising at 95 or so, b/c I have went faster than that with no bad effects. Also the motor was broken in just fine its not like you have to go 5k for a break in, I did a fast break in which was suggested (my problem is with #1 and #3 they have no and low compression) bent valves im thinking

 

[NewB2dsm]

ok I know it was not smart to go 140 but it did it just fine with no prob,it is when I adjusted the fpr. and the little balls are because of the spark getting to hot obviously, but that cyl. is just fine (190 compression). I was only running the stock turbo, injectors,intake.It is when I turned the fpr out more it ran better and my a/f ratio guage said the ratio was still rich, I think it was malfunctioning. after that is when I was just cruising at 95 or so, b/c I have went faster than that with no bad effects. Also the motor was broken in just fine its not like you have to go 5k for a break in, I did a fast break in which was suggested (my problem is with #1 and #3 they have no and low compression) bent valves im thinking

First off, you dont spend that kind of money on a stroker motor and put STOCK INJECTORS ON IT!!! the motor is far from stock now. And you dont take it to 140mph right away, you slowly break it in and go get the ####er tuned correctly using a wideband, logger, ext. Not no ####ing stupid aif/fuel guage. Sorry man, its time to tare into the motor and take it to someone who knows what they are doing to figure out whats wrong.

 

[eclipsegsxccca]

a couple of you just keep saying the same crap "break it in slowly""you shouldnt be going 140" get real, I broke it in just fine it was running great. Also I have 1000cc rc injectors but it wasnt running right, that is why the 450s were in. I know I should have had a wideband and and a logger that was my mistake and it cost me. But just stop saying I should have broke it in slower because that is NOT my problem here. It was a tuning issue. I definitly regret not using the correct monitoring device. What I was wanting to know is what do you guys think broke? Thats it, so no more dumbass remarks, I did have good compression like I mentioned, before this happend, so the rings were seated and the motor was broke in. You guys never hear of breaking it in fast. (not talking about going 100+ )It is supposed to be better. Thank you for your opinions though.

 

[92tealTSI]

it went 140mph no problem huh? Well youve got a ####ing problem now. Its your own fault for beating on it with stock injectors on a stroker and blowing it up. You leaned out and detonated bad now you have no compression. You need to break in the motor properly next time, get a real fuel system (rising rate regulator, big injectors, and some sort of compensation), and keep your foot out of it till its right.

 

[94awdcoupe]

several posts above stated what they think went wrong...... you were what went wrong. the car was not properly tuned for you to beat the shit out of it. it was stupid, now pay the price. the freakin car detonated like crazy and was probably trying to pull out a shitload of timing, but you just kept your foot in the gas, instead of doing the smart thing and letting out. stick a fork in it. your motor is done.

 

[hefftdsm]

I gotta agree with 4g63-gst. When you're sinking that much coin in a motor, you better spend hours on research and make sure you get ALL you need to tune it correctly. That thing is "blowed out" man. Tear it apart and start over again.

 

[eclipsegsxccca]

for those of you calling this a "stroker motor, you don't know what the hell your talking about so your advice = nothing. This motor is not stroked ou,t it is a 2.4L 4GCS. and I was wrong about milaage it had 400 miles on it which is still not alot. I will take the head off tonight and see the damage, so far I know the pistons are fine I can still tell the pistons are in great shape, but I will see more when I pull it apart. For all of you trying to help, thank you. For all of the a**holes go talk to someone else about what you do not know.

 

[timloomis]

id say the rings/pistons are gone.they probably melted due to not being tuned right(too lean).it sux,but just tear into it and start all over.

 

[1fastlaser]

I got a g4cs 2.4,and i would have never went 140 top speed run.I can say i went racing at 300 miles on them motor,but no prolonged speeds.You got a 2.4 and ran stock injectors was your first problem,and you detonated,running 6es,probably too much timing,not enough fuel and you melted some shit.Im over 1000 miles into my motor,and have been racing it since 300 miles no problems.But i also have injectors,and know how to get a car setup "safe" to beat on.Im sure the machine shop or noone messed up,and you just threw away 3k

 

[Littlebeeper]

1Fast and others hit it right on with the 1st problem being the use of 450cc injectors. those damn things can't keep up with 2.0 half the time. IF you didn't compensate some how this engine was running lean right off the bat, even at idle. She got all hot and bothered at those trips to 100 hey on the bright side, i envied you for a whole 300 miles or so get her fixed and slam those 1000cc bad boys in there. Better rich tha than broke

 

[Turbo Talon DL]

I realize I dont know as much as most people in this thread, as lots of you are probably builders and work at a shop, but nobody has given benefit-of-the-doubt that he maybe just warped the head and maybe lifted it a little. He DID say he was white-smoking. Who knows, maybe he got lucky and just, (JUST) melted valves, the plugs and lifted the gasket. Before I realized my last motor was junk, (bad builder) I took it to 100mph for a few sec, and quickly backed off, it continued to run. Compression was higher after we took it on the freeway. But either way, Eclipsegsxccca dont expect sympathy on the Tuner, you ask for help here, you have to take the good along with the bad.

 

[Burnett03]

Ok here's the deal I installed a 4gcs 2.4l motor and everything was fine(went to 140 mph. no prob.) I used castrol 10w30 to break in the motor and I changed it at 200 mi. (I currently have 300 miles on this motor) I also changed the spark plugs at the same time cause its running rich.(NGK-R bpr6es ?)<<<was running 7's on the break in. Last night I did the emissions removal with the egr still bolted on just not hooked up, and p[lugged the vac ports. I'm going down the highway to test it it was running great, I took it up to 100mph and all the sudden I feel a power loss so I back it down and turn around to go home . when I got into some light I notice thick white smoke bellowing out the tail pipe so I stopped to check it out. >>oil is everywhere I think from the temporary k&n breather, and the vac. caps off of the throttle body. First thought oil got into the intake, correct? Far from it, I checked compression on 6-16-05(190,160,190,200)just now I checked again to see if my rings are bad, when I pulled the plugs #4 had some small metal balls on the tip, 3 and 2 were fine but #1 half of the white piece around the core was gone and the tip was melted together. compression this time(0,180,30,190) What I want to know is did I break a rod or did my rings get to hot and disintegrate?sorry this was so long just wanted to get it all in here for more accurate advice.

why would you take a new motor to 140? hell even an old motor.

 

[bullettdsm]

a couple of you just keep saying the same crap "break it in slowly""you shouldnt be going 140" get real, I broke it in just fine it was running great. Also I have 1000cc rc injectors but it wasnt running right, that is why the 450s were in. I know I should have had a wideband and and a logger that was my mistake and it cost me. But just stop saying I should have broke it in slower because that is NOT my problem here. It was a tuning issue. I definitly regret not using the correct monitoring device. What I was wanting to know is what do you guys think broke? Thats it, so no more dumbass remarks, I did have good compression like I mentioned, before this happend, so the rings were seated and the motor was broke in. You guys never hear of breaking it in fast. (not talking about going 100+ )It is supposed to be better. Thank you for your opinions though.

I think you have all the answers right here in this post. As I stated previously, while I would not break her in at 100+, I don't think that it is the real issue (though it might have helped the problem along). You know the 450s were not a good idea and you know that you should have wideband with a competent tuner. You also mentioned later that AFPR adjustment came into play. YUP, YUP. you are on the right track. But do not be surprised if when you take of the head that you see a couple of cylnders with detonation marks on the sides of the piston by the cylinder wall. There is even a possibility that you could have burnt through. Does not take much for a poorly tuned turbo. Yes you need to break it down and find out the special surprises underneath.
MB

 

[snox135]

ok I know it was not smart to go 140 but it did it just fine with no prob,it is when I adjusted the fpr. and the little balls are because of the spark getting to hot obviously, but that cyl. is just fine (190 compression). I was only running the stock turbo, injectors,intake.It is when I turned the fpr out more it ran better and my a/f ratio guage said the ratio was still rich, I think it was malfunctioning. after that is when I was just cruising at 95 or so, b/c I have went faster than that with no bad effects. Also the motor was broken in just fine its not like you have to go 5k for a break in, I did a fast break in which was suggested (my problem is with #1 and #3 they have no and low compression) bent valves im thinking

You need to seriously learn how to "break a motor in fast". It's not 140 mph runs, it's short full throttle runs to 60-70 mph after it warms up and then letting it completely cool off between runs. Going 140mph is hard on a new motor in more ways than you will ever understand. Especially with stock fuel system, most people wouldn't even attempt to start there 2.4l with a stock 2.0l fuel system. If you like it or not the 140mph run did start doing some damage to your motor. Then turning down the fuel pressure on a already insufficient fuel system and trying to go over 100mph again is just nuts.