i have turbocharged ka, car will start but not run

[departing240]

one day after getting the car up to 5000rmp, the car feels like it is about to die out on me, then some day later, i started up the car, but it will slowly die after 5 secs unless i give it some gas then it will stay running, but once i let go of the gas then the car slowly dies, then a few days later i tried to check if it will have the same prob, only this time even if i feed fuel it doest rev at all, it makes a "chlunk chlunk chlunk" then dies, it is not the fuel pressure or throtle body, i have checked that. it sounds liek i am only running on one pistion. i checked to see if all of my spark plugs are igniting, and found that in one of the socket there is some oil whereas everything should be dead dry, so my guess is that a ring in the pistons broke and i am loosing compression, so i might have to pull out the notor head to fix the rings since the pistons are all the way down connected to the camshaft. i was just wondering if anyone have any other ideas what the prob could be so that i wouldnt have to basically get a whole new motor.

[MikeMurphy]

out of curiousity wouldnt the same thing happened if your wastegate was stuck shut during startup?

good luck, sorry I couldnt offer anything concrete.

[WDRacing]

Do a compression test and a leak down test. Then post the results.

Just a little info, the pistons are connected to rods which are connected to the crankshaft. The camshafts actuate the valves for fuel/air induction as well as exhaust. The KA has dual overhead cams. Probably just a typo on your part, but just in case...

Your wastegate is always closed until your wastegate actuator tells it to open. That is if your using an internally gated setup. If it's external it will open when the B/C tells it to or the spring pressure for that particular wastegate is reached. Either way, the wastegate will not be closed unless you've reached a previously determined boost pressure, which is none during startup and idle.

WD

[zachosz]

My brother used to have an Audi that used to do the same thing, but we decided to junk the car since it was a piece of sh*t and it was not worth putting any money into it. If it helps the car was smoking pretty bad, which would be the rings going out on it, so that might be it. Also i heard the same problem happening when the ECU is bad, so check that as well.

[CIENFUEGOS]

Ummm ya , the Pistons are contected the Rods buddy.... but anyways. If you are smoking grey smoke then you are buring oil, which means your rings are gone. Also you would be getting no compression or very little on the pistons with busted rings. Things to do: As mentioned before Compression check and leak down test.If no compression...... pull the head and have fun basically doing a rebuild. Changing all the rings, might as well, change whatever you can while you have the head pulled.

just my .O2Good luck

[machinehead]

could be a head gasket too

[C-Kwik]

Check all your intake and intercooler hoses. Also check the BOV return pipe. You may have a leak somewhere.

[wanabe240esx]

this has to be a joke, oh wait, this is nico...........

read a book kid

I just wanted to let you know that I'm an insensitive jerk. I don't plan on helping anyone.

Insensitive to Ignorance*

[zb240sx-t]

Hi,I see that you people don't know much about turboing KAs.His car runs like crap and smokes because stock computer doesn't know what the hell is going on. It dumps way too much fuel in causing it to smoke and stall.Also turboed KA will not idle unless you help it.Two things to Mr.Moderator:1.Not all KAs are dual cams.2.Yes, wastegate can be partly open at idle (you can adjust it via linkage).Best way to get turboed KA in order is some electronics.I recommend Apexi S-AFC. Works great, forces KA to idle,gets rid of unburn fuel even compensates for atmosph.BOV.

Just for a record: I got 89 S13 T3 turbo in my garage.So, unless you people know what you're talking about don't confuse anybody !!!Have fun....and I see ya...(in my rear view) :ylsuper

[WDRacing]

Hi,I see that you people don't know much about turboing KAs.His car runs like crap and smokes because stock computer doesn't know what the hell is going on. It dumps way too much fuel in causing it to smoke and stall.Also turboed KA will not idle unless you help it.Two things to Mr.Moderator:1.Not all KAs are dual cams.2.Yes, wastegate can be partly open at idle (you can adjust it via linkage).Best way to get turboed KA in order is some electronics.I recommend Apexi S-AFC. Works great, forces KA to idle,gets rid of unburn fuel even compensates for atmosph.BOV.

Just for a record: I got 89 S13 T3 turbo in my garage.So, unless you people know what you're talking about don't confuse anybody !!!Have fun....and I see ya...(in my rear view) :ylsuper

Ok ZB, I'm going to let your comments slide cause your new here. I happen to know a great deal about forced induction motors.

If I was going to make a diagnosis based on the motor smoking, I would ask what color the smoke was. Not just assume it was fuel.

If your wastegate is open at idle it is adjusted incorrectly. You want the wastegate closed so the turbine will spool up. Thats a no brainer there...Also, not all internal wastegates come with an adjustable actuator.

If your car doesn't idle because you installed a turbo, it's purely because you installed somthing improperly. Installing a turbo won't do anything to the idle that a header won't do. The turbine doesn't change anything with the ECU until it starts to produce boost. At which point the ECU has to raise the amount of fuel. Now if you installed larger injectors and are running a stock ecu, then of course it won't idle, but that has absolutely nothing to do with the turbo.

I'm not quite sure what you mean by "forces the engine to idle". The SAFC simply alters the MAF voltage allowing you to lean/richen your A/F mixture. It doesn't force anything.

I know not all KA's are dual overhead, but they are over head. I was assuming he had a DE not an E.

Becareful using terms like "you people", your not going to make many friends that way.

WD

[I am Technoman]

I still want to see the compression test results!

[departing240]

the second socket has only half the compression of the rest of the other three, so i decided to just sell the turbo kit and set. even if it was the ecu that wasnt responding right and too much fuel has clogged it, it is too late nowthe rings connecting the piston rods to the crankshaft is already broken because oil has leaked through which caused the low compression in the second spark plug socket. actually i think the mechanic dint do a great job in timing and retarding, and therefore set up a disaster waiting to happen without me noticing until it was too late.

[Pornflakes]

the second socket has only half the compression of the rest of the other three, so i decided to just sell the turbo kit and set. even if it was the ecu that wasnt responding right and too much fuel has clogged it, it is too late nowthe rings connecting the piston rods to the crankshaft is already broken because oil has leaked through which caused the low compression in the second spark plug socket. actually i think the mechanic dint do a great job in timing and retarding, and therefore set up a disaster waiting to happen without me noticing until it was too late.

Umm.....the rings don't connect the piston rods to the crankshaft. The rings lie around the piston (top part) to seal for compression.

[zb240sx-t]

Ok ZB, I'm going to let your comments slide cause your new here. I happen to know a great deal about forced induction motors.

If I was going to make a diagnosis based on the motor smoking, I would ask what color the smoke was. Not just assume it was fuel.

If your wastegate is open at idle it is adjusted incorrectly. You want the wastegate closed so the turbine will spool up. Thats a no brainer there...Also, not all internal wastegates come with an adjustable actuator.

If your car doesn't idle because you installed a turbo, it's purely because you installed somthing improperly. Installing a turbo won't do anything to the idle that a header won't do. The turbine doesn't change anything with the ECU until it starts to produce boost. At which point the ECU has to raise the amount of fuel. Now if you installed larger injectors and are running a stock ecu, then of course it won't idle, but that has absolutely nothing to do with the turbo.

I'm not quite sure what you mean by "forces the engine to idle". The SAFC simply alters the MAF voltage allowing you to lean/richen your A/F mixture. It doesn't force anything.

I know not all KA's are dual overhead, but they are over head. I was assuming he had a DE not an E.

Becareful using terms like "you people", your not going to make many friends that way.

WD

First of all Mr. Moderator - reason why I said what I said is to let other people that sometimes thay saying things that doesn't make any sense. It simply creates confusion.I built dozen turbo KAs and none of them ran half decent without electronics. And "yes" AFC simply forces your engine to run the way you want it to by cheating your ECU.And saying "it's purely because you installed something improperly" to a guy who builds racing engines for living seems a little funny.I'm just trying to be helpfull.Hope it clears everything (no hard feelings).Later:ylsuper

[C-Kwik]

First of all Mr. Moderator - reason why I said what I said is to let other people that sometimes thay saying things that doesn't make any sense. It simply creates confusion.I built dozen turbo KAs and none of them ran half decent without electronics. And "yes" AFC simply forces your engine to run the way you want it to by cheating your ECU.And saying "it's purely because you installed something improperly" to a guy who builds racing engines for living seems a little funny.I'm just trying to be helpfull.Hope it clears everything (no hard feelings).Later:ylsuper

I've built one turbo KA and for one year ran it with nothing but a FMU with stock injectors with NO problems. Keeping in mind a FMU does nothing until you start to make positive intake manifold pressure. My car idled like a champ. I'm running an E-Manage with 370 injectors now and and other than using the injector upgrade feature, I've made no other adjustments. While it seems the actual injector flow rates are different then the rated flow rates, the stock mapping doesn't seem to hate turbocharging except for the exception of using the stock injectors. They are too small for any decent amount of boost.

Saying you build race motors for a living means nothing. It's just like the person who brags how long they have been doing something. "Having 10 years of experience is not the same as having the same year of experience 10 times." Not trying to be harsh here, but posting your resume means nothing. You have to back it up.

[SSS]

If the engine is smoking, you're burning oil. simple. either you're rings or valve guide seals are stuffed. The crap idle is not due to positive manifold pressure, i do not know of one turbo car that makes postive manifold pressure at idle. All you will see at idle is vaccuum.Has anyone considered vacuum leaks in the lines to the fuel pressure reg?

[MikeMurphy]

If the engine is smoking, you're burning oil. simple. either you're rings or valve guide seals are stuffed. The crap idle is not due to positive manifold pressure, i do not know of one turbo car that makes postive manifold pressure at idle. All you will see at idle is vaccuum.Has anyone considered vacuum leaks in the lines to the fuel pressure reg?

why would you bother checking that? You said he is burning oil.

My first post I was just saying that if the wastegate was closed and the exhaust was being forced through the turbine at very low RPMs then the backup might be enough to stall the engine