911 emergency what seems to be the problem?

[1995240sxSE]

OK here is the deal I got everything all finished up and took her for a spin. Very nice good boost and accel. I turned around and went back to the shop to check all fluids after the road test and whoa smoke!!! alot of it coming from the back! I was pulling into the garage and the car died. I popped the hood and oil everywhere and I am guessing that it came from the valve cover breather that was wide open. WHat do I do with open line BTW. I pulled a spark plug coverd in oil. so I pulled all 4 same story, #3 was by far the oilyest (sp.). Did a compression test and #1 00 psi #2 00 psi #3 00 psi #4 00 psi. I am scratching my head and beggin to god I didnt blow her completly. I am pulling the head off tomarrow. Hopefully it is just the oil passages on the head gasket and not the rings! Any other suggestions what it could be!
Modified by 1995240sxSE at 1:27 PM 5/10/2006

[DammitBobby]

I had a problem with the 95 motor and had oil all over my spark plugs and down in the spark plug valve cover. My valve cover was missing valve cover bolts. There is 2 gaskets for the valve cover one goes around the valve cover the other has 4 holes that go around each spark plug. You will have to take the valve cover off and look underneath the bottom of the valve cover to see if it is missing or not pushed on correctly.

[fiznat]

Yeah I forgot that gasket before also... you'll get oil evverywhere if its not in.

The zero compression thing doesnt sound too good though. Are you sure you did it right?

When you saw oil on the plugs-- was it on the tips of the plugs (from the chamber) or on the tops of the plugs (probably from the gasket)?

Do you have coolant in your oil, oil in your coolant, or fuel in your oil? Who assembled your engine (specifically who did the rings)?

[1995240sxSE]

i pulled the valve cover gasket and there was the 2 gaskets in the proper spot! it did however look like oil was coming from the top but I could also see oil sitting on top of pistons when sparkplug was out. Ummmmm NISSAN I guess built my motor, it is completely stock motor!

[1995240sxSE]

BTW... The 4th cyl had no oil on the plug and the 3rd one was really bad 1 and 2 were equal ammounts, and it looked like they were coming from the top, but like I said oil was sitting on top of the pistons. I am having a hard time believing that the rings are bad cause nothing really happend ie noises when cruising down the road but it just studders and then shut off when pulling into garage. Could a really bad leaking egr block off plate cause my compression problems?

[fiznat]

EGR wont have anything to do with your compression numbers.

Redo that compression test. Even if you blew the rings to shreds you should have SOME compression (not zero).

Try replacing the spark plugs and restarting the motor. Make sure the plugs are tightened correctly. With as much oil as you're describing, it seems reasonable that you fouled the plugs with oil and thats why the car stalled.

Are you sure you saw oil on the pistons and not fuel? What color was your smoke?

[1995240sxSE]

the smoke was blue but there was oil all over my engine bay i concluded that it came outta my cpv port that was wide open. I dont how the oil got to the plugs to foul them if my valve cover gaskets were fine? I did replace the sparkplugs and they did nothing just cranked. Me and the mech are sort of baffled. Timing chain is good The only thing that I can think of is that the head gasket is completly f***ed or maybe there is a hole in a piston, but there was no detonation!

[fiznat]

cpv port

PCV. haha.

That much oil shouldnt come out of your PCV. I've ran open PCV ports lots of times and that never happens unless you've got some serious blowby going on-- i.e. blown rings.

...Even still, that wouldnt explain oil on the spark plugs.

Blown headgasket usually means you burn coolant, not oil. Generally if this is the case you can see oil in your coolant or coolant in your oil. Thats why I asked that question... If your rings are really bad (or if youve been cranking alot and no firing) you'll have a lot of fuel in your oil. Another thing to check.

The most likely place for oil to come from is either that spark plug gasket (maybe it was offset somehow, or perhaps it is cracked?), or through the rings. Rings seems more likely given the blowby out of the PCV and the compression test results. Have you redone the test yet? Try pouring a capful (bout a tablespoon) of oil down through the spark plug hole and doing the test again. If that bumps your pressure up, its most likely your rings.

[1995240sxSE]

alright thanks man I will try the capful thing

[1995240sxSE]

what size rings should I look at pricing, I guess what size is the standard oem size? I am gonna tear into the motor tomarrow after work or friday, I am still really hoping that headgasket is the problem! I will find out when I tear into it

[dontbugme]

Let's start at the beginning. Was this an initial start and run on a rebuild? What was rebuilt? As previousely stated, it's highly unlikely you had 0 compression pressure even if the rings weren't installed. How, exactly did you do the test? From what you've said so far, blue smoke, no compression and oil spraying from the valve cover, you have a serious problem with the overhaul that definitely looks like failed rings or a combination of problems. What are your valve clearances like? And, what was your ignition timing set at? Since it seemed to start and run o.k for the initial trial what happened during this (I'm assuming) break in run that made everything go to sh*t? I feel for you as this really sucks!

[sean8564]

can you snap a few pics please

[1995240sxSE]

ok no overhaul or rebuild was done at all. I simply installed my turbo and drove it! I am gonna take some pictures when I pull the motor out! My compression test was as follows; took out spark plug and screwed the tube into cylinder, held at WOT and cranked 10 times. results no compression. I thought there was a problem with gauge so I tried on another car and it worked fine!

[dontbugme]

Well, that's too bad. How many miles on the engine and how much boost were you running?

Just realized that this was your post: zer...02814Without forged rods and pistons you won't be able to keep the engine together at 300 hp with the corresponding 15 to 17 psi of boost that it will take.

I have a feeling your pistons will drop right out of the bore due to broken ring lands when you disassemble it. Either that or you've holed the crowns.
Modified by dontbugme at 8:02 AM 5/11/2006

[1995240sxSE]

i didnt have any detonation and drove it 1 mile and didnt beat on it. I will take pics when I get the head off, I am gonna go straight to the shop when I get off of work to begin!

[brunswick240]

Hey did you replace the gaskets yet? The ones on the VC? This same thing happened to me, i was going to get my car tuned and drove it up to the gas station to fill up, turned it off, and when to go start it and it wouldnt start so i pulled it over and popped the hood, checked the plugs and there was oil almost to the top of all of them (this was in 15* ohio weather while it was snowing so it sucked even more) but i went and picked up the inner and outter VC gaskets and put the VC back on with the new gaskets and what not, drained the engine of the oil (i had gas in mine also from a bad inj oring, but yaaa replaced that) and let it sit for 3 nights, filled it up, cranked it, and it fired right up, sputtered a little but after a couple mins ran like a champ. Id try that before tearin it all down and replacing stuff. The gaskets are like 21 bucks or something, better than spending 200+ on pistons and machine work.

[1995240sxSE]

that sounds great and all but what about 2 quarts shooting out of my pcv valve? I checked those gaskets and the look good and in the proper place! I am gonna pull the head after work and check everything out!

[brunswick240]

Well thats a lot of oil, Im not even really sure what to tell you bout that, i guess i skipped over that part. I dont know what to say bud, I hope you figure it out without droppin some big bills and you can get that ka-t slut up and running again! Good luck man, sorry bout what happened.

[dontbugme]

Hey did you replace the gaskets yet? The ones on the VC? This same thing happened to me, i was going to get my car tuned and drove it up to the gas station to fill up, turned it off, and when to go start it and it wouldnt start so i pulled it over and popped the hood, checked the plugs and there was oil almost to the top of all of them (this was in 15* ohio weather while it was snowing so it sucked even more) but i went and picked up the inner and outter VC gaskets and put the VC back on with the new gaskets and what not, drained the engine of the oil (i had gas in mine also from a bad inj oring, but yaaa replaced that) and let it sit for 3 nights, filled it up, cranked it, and it fired right up, sputtered a little but after a couple mins ran like a champ. Id try that before tearin it all down and replacing stuff. The gaskets are like 21 bucks or something, better than spending 200+ on pistons and machine work.

How exactly is this related to no compression? Sorry. gaskets aren't going to correct this problem.

[1995240sxSE]

i am not too sure if it is gonna take too many big bills I have a few hook ups and mechanic friend! I had to work late and am way too lazy tonight to pull, I am off tomarrow at noon and I get paid tomarrow so I will see! I am putting money that it is either the head gasket or the pistons! either or I am pretty sure it will be under 100 if headgasket and 500 if the pistons, so lets hope for the best!

[1995240sxSE]

heres a pic

[dontbugme]

i didnt have any detonation and drove it 1 mile and didnt beat on it. I will take pics when I get the head off, I am gonna go straight to the shop when I get off of work to begin!

Previousley, you said, "Very nice good boost and accel.". How much boost? There has to be a reason for the sudden destruction of your engine. Most engines will take 1/2 a bar boost w/o too many problems but a 1 bar boost is increasing the thermal load on your engine by about 100%. It doesn't take long for something to complain if it wasn't designed to handle this increase, detonation or not.

[1995240sxSE]

well it 15 psi for about 3 secconds then went back down.

[j-z]

my money is on the ringlands for sure. oh well, you live and learn. dont boost even close to that on stock pistons. we know dis maaaaaaaan!

[1995240sxSE]

what would safe on stock pistons, or stock everything for that matter?

[fiznat]

Some people do 15 psi every day on stock internals, some people blow motors at 7 psi. Assuming the tuning is equal, it seems that how long a KA lasts under boost is pretty much just luck of the draw.

[j-z]

well for pistons its mostly on the tune. if youre running full standalone, you can get away with 15psi on stock everything just because your ignition and a/f are dead on. stock ringlands are very sensitive to detonation. obviously from your 1 mile boosted journey your shlt was def not tuned. tunning is a virtue. btw, what did you have for engine management?

[1995240sxSE]

safc II and msd 6btm set to 2 for initial run

[1995240sxSE]

I think I have found a solution for me until I can build my block all up. I am gonna put in a motor from my parts car from my 5 speed swap and keep boost down at the .5 bar the wastegate is set too. This motor I think should be able to hanle this ammount of boost. I am gonna tow my car straight to the dyno shop for the dyno tune. Think I should have any problems with this idea, I am just really wanting to drive my car with a turbo on it.

[j-z]

now that seems like good idea. you can drive your car to the dyno, just dont go into boost at all, and def not 15 psi LOL. i know its hard, im gonna have to drive atleast 500 miles without boosting on a fresh motor and clutch. what kinda injectors are you running, and what about fuel pump? just make sure you get it tuned. ya gots ta do that. i learned the hard way from the same situation youre in. i know it sucks big nuts, but atleast itll get done right the next go araoung.