Important question..

ONLY for ADVANCED technical discussion about the 240sx!
Turbo_Ka24
Posts: 17
Joined: Sun Sep 01, 2002 7:57 pm
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sup all.. anyways my 92' 240sx turns on perfect but after say about30 mins it will shut off. they told me that its the head cuz the gaket could be fuked up.. could it be the head or the head gasket? plz help need to work soon..


trpower7
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Joined: Wed Jul 24, 2002 9:57 am

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Wow, umm, first, your english is horrible.

Sup = Hello, or even whats up is acceptableFuked = we have the word filter for a reasonCuz = because

Now, to answer your question, the head gasket is not a very likely culprit. But we need alot more information. Smoking, oil in water, water in the oil, stuttering, driveability symptoms, etc. A badly leaking head gasket could allow enough water into the cylinders to cause it to shut down, but the way you describe it it's not likely. It would cause stuttering, hesitation, misfire, etc, not just shutting off immediately. If you have a turbo KA, as your signature said, you should be able to diagnose this kind of thing on your own. If you don't, it's rather poserish. Please provide more information.

Turbo_Ka24
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no this ones non turbo.. but when i rev it up high it stutters as if it will shut down when its reving low again but then it regains idle... it justs shuts down after a while some dew said it was the head to take it to the shop and theyll shave it for me 150-200$ bux, but if its the gasket that will b an easy fix unless its a hssle to remove it..

ShadowKnight006
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Joined: Thu May 22, 2003 7:09 pm
Car: 95 240SX & 96 Altima

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Ok, I know I don't really have many posts and I lack the proper mechanical skill to make a diagnosis of Turbo_Ka24's problem. However, this post is for trpower7. I have read some of your posts in other threads and everytime I read one you do nothing but criticise people. First of all, the forums are not for badgering people, especially those new to them, about their English. Let us not forget, the car's which we all love are not from a country of English majority. Second of all, you do not have any room to talk. Shall we look at your post in this thread?

"But we need" you should never start a sentence with "But".

"alot" is not a word, the proper grammar would be "a lot".

"describe it it's not likely" you don't need "it" before "it's".

Turbo_Ka24, I recommend posting a few more details about your problem and waiting for someone more helpful to reply. Also, you may want to post your problem in the Nissan Online Mechanic forum. Good luck.

ShadowKnight006

Turbo_Ka24
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wow.. thnxs alot man. i didnt wannasay anything but he came off as an ***..

ShadowKnight006
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No problem, this place is really great. I have used the search button(up at the top right) to find a lot of info thats helped in rebuilding my 240. Hope you get it fixed.

ShadowKnight006

TomsMR2
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if you blow a head gasket to the point where its stalling out... it will be smoking SEVERELY out the tailpipe.. like filling up the block.

if its hesitating and studdering, it really really sounds like a fuel problem.. like your fuel pump went out. theres ways to check that, im sure someone can help you out on checking the fuel pump :)

trpower7
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I speak on here as I would speak in person, and as I expect to be best understood. Not as I would write my doctoral thesis. I don't tolerate plainly ignorant things. Every time I criticize it is because I was able to find an answer by using no-brainer methods within minutes. Also, alot of questions are just plain common sense. Tolerated ignorance and lack of proper methodology and investigative skills contribute to an apathetic and ill-equipped population and environment. I will do much to avoid this end. I always give concise, accurate, usually correct information, as nearly all my posts will indicate.

This sounds alot like a tuning issue, which sadly on our FI cars can be any number of things. Look for a loss of coolant first of all. And anyone who is immediately talking to you about shaving the head is getting you in WAY over your head. If it was a headgasket problem of this magnitude signs would be very apparent, clouds of smoke, huge loss of coolant, overheating, etc. I believe someone is trying to just get you to jump to a conclusion which involves alot of work and $$. Your problems very well could be fuel related, and it is certainly a place to check. Also a likely culprit is your MAFS sensor and it's connections. Below you'll find a list of parts, in order, that can cause the symptoms you described:

1) MAFS2) Fuel Pump or regulator3) TPS Sensor4) Very bad vacuum leak5) Injector wiring or bad injectors

Also, check your ECU for codes. There is a detailed description of how to do this in the FAQ.

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A_Rivers
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trpower7 wrote:I speak on here as I would speak in person, and as I expect to be best understood. Not as I would write my doctoral thesis. I don't tolerate plainly ignorant things. Every time I criticize it is because I was able to find an answer by using no-brainer methods within minutes. Also, alot of questions are just plain common sense. Tolerated ignorance and lack of proper methodology and investigative skills contribute to an apathetic and ill-equipped population and environment. I will do much to avoid this end. I always give concise, accurate, usually correct information, as nearly all my posts will indicate.


Thank you, for that. I don't post very much for two reasons, one reason is the Search button, and two is that if I just take the time to investegate and think about stuff before I start running to this board, I find that all my answers are staring me in the face 90% of the time. Also proper use of grammer is not something to be ashamed of. Now I'm not saying I am not going to give out advice because you should figure it out for yourself. Just don't ask redundant questions that you could really figure out on your own.

I would try the O2 sensor or MAF first then work your way down the list.

Turbo_Ka24
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well guys thnxs i apolgize for the grammar im just in a hurry.i think that the head isnt it cuz it doesnt smoke what it does is overheat bad like in about 30 mins but no smoke and when i rev up the engine high it will stutter for a sec when it comes down it comes so low ull think it will shut down maybe thats related to the problem..?

trpower7
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I can BARELY understand what that paragraph is supposed to mean, please re-word it. I'm not trying to be a jerk, but really, read over it, I can't understand it at all.

Meantime
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Joined: Thu May 08, 2003 3:51 am

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Okay, I have employed my pidgin English translating module.

From what I can tell, you have 2 concurrent problems, both of which may or may not be related to one another.

1) Your car overheats after 30 minutes of running.2) Your car stutters (regardless of RPM. You note it does it when the gas is depressed AND at idle.)

1) is a cooling system issue. First of all, make sure you have coolant in the radiator and tank. Sounds obvious, but you'd be surprised how many people don't even bother to check. If you have coolant, and your car is still overheating, then the coolant is not flowing or radiating the way it should be. Then you need to look at a) thermostat, b) fan operation, c) blockage in coolant system, d) head gasket and finally e) radiator. I wish you would be more specific in exactly how the car is overheating - at idle, at speed?

Solve problem 1) first before you even attempt to tackle 2). It is very difficult to diagnose an engine that is overheating every 30 minutes. And 1) will probably be easier to solve anyway.

If you have a bad head gasket, then 1) and 2) may indeed be related. The best way to know for sure is to do a compression test.

Turbo_Ka24
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how do i go about a compression test...?

ok the problem seems to be when i drive my car.it overheats after about 30 mins.the stutter isnt really that bad, its just when i rev it really high it will drop so low that it stutters for a second. might be normal or something im not sure..?

Meantime
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Joined: Thu May 08, 2003 3:51 am

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Go to Sears and buy a $20 compression tester, follow the instructions...the process is described elsewhere in this forum as well, so I won't go into it now.

standard compression is 179 per cylinder, minimum is 149, and the difference between each cylinder shouldn't exceed 14.

Again, you're not describing WHEN it overheats. I'm not talking about time intervals, I'm talking about situations. If you start the engine and let it sit for 30 minutes, NOT moving, will it overheat then?

Now if you are driving at highway speed for 30 minutes, will it overheat then also? Or no?

Do the compression test first, eliminate the head gasket as a possible problem before anything else.

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C-Kwik
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trpower7 - perhaps, you can be a little more helpful to him if you specified what you can not understand. It may actually make sense to him.

Turbo_Ka24 - When asking a technical question, picture yourself as a writer. Use good grammer and punctuation. It absolutely helps. As far as your question, I'm a bit unsure if you are trying to say your motor stutters at high RPM or when you let it drop from high RPM. And by stutter, are you referring to the motor almost stalling, or more like a misfire?

As far as a compression test, it may not tell you if the headgasket is actually bad or not. Do a leakdown instead. It tells you more about where air is escaping since you can hear it leaking in different places depending on where it is leaking.

trpower7
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I really had nothing to specify, NONE of it makes sense to me. I can't write out the 10 or so suppositions I came to based on different interpretations of the same data........

Turbo_Ka24
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ok trpower....

my engine overheats at about 30 mins of driving, or at idle.when i rev up my engine and it come's back down to low rpm's it stutters as if it was going to stall.i wish you could understand me now so that u might be of some help.thnxs alot..

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Antjaw
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Jane, You ignorant S|ut!

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A_Rivers
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The stuttering I am not quite shure, but the overheating issue sounds exaclty like when the water pump went out on my '87 Maxima, most Nissan water pumps have a weep hole were if the bearings go bad and the pump starts to fail the coolant will leak out a little hole in the pump body, it wont lose as much when driving around but at idle ou can see it dripping from the pump.

trpower7
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That could be a head gasket thing, and it sounds like it, but you would be using large amounts of coolant, smoke would pour from the tailpipe, and there would be coolant in the oil. The overheating and stuttering may be totally unrelated as well. Stuttering after being under load can be any number of issues, and overheating is the same way. Check to condition of your coolant, level, flow, etc, those will reveal most cooling issues, or at least give a place to start.

Turbo_Ka24
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but there is no smoke coming out of my exhaust what so ever..and there is no smoke coming out of my head either..

BaSeBaLL4L25
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Turbo_Ka24 I had a similar problem like this with my 89 240sx. I took it to a local Z mechanic to see if he could figure out what was wrong with it and he found that my fuel filter was almost completely clogged. He said that there was hardly any back pressure on the line and that was why my car would stall. My car was also overheating. I knew it was the head gasket though because the guy I had bought it from used some stop leak on it and didn't change the head gasket. Hope I was some help to you.

Queamore
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Have you checked for any vacum leaks. Or any hoses cracked Mine had a vacum leak under the collecter and it did just about the same thing.

wiwalsh
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Another thing you may want to check is to see if your coolant system is properly bleed. There is a valve... discribed here....

http://www.nissaninfiniticlub....bleed

Very hard to read your posts turbo. If you use punctuation and complete sentances.it will help everyone figure out what you mean when you are writing i mean sure you are writing how you are speaking but this dont mean that it can be read remember to proofread your posts so that you can read them smoothly also try to take our persepctivesandseehowthingslookwhenyouwritethem out youmightalsowanttoattempttoreunderstandtheproblemfrom yourpostandseeifitstillmakesesencekoniobaetnoabinslkdfnblkfnbklsdjfnblskdnbsdlknbsdnb......

I digress

240_Keyy
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trpower7 wrote:Wow, umm, first, your english is horrible.

Sup = Hello, or even whats up is acceptableFuked = we have the word filter for a reasonCuz = because


That was mean you a** :)

now for the helpful bit... Check your coolant temp sensor and your MAFS (but others have already said that)

Turbo_Ka24
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how do i check my mafs? sorry bout grammar.

wiwalsh
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There are lots of answers about this. Use the search button or you will get flamed... I know you are a new user, but some people will start yelling and screaming because you didnt use the search button.

Understand why this board is a great resource.1) The people are knowledgable, kind, and helpful2) Many many topics have been discussed before and this can serve as a reference manual to get your problems fixed.

Don't post a message without first searching for the topic. People will get mad that you expect them to put in time to help you out, when you can't first help yourself and try to find the correct answer on your own

Turbo_Ka24
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ok thnxs for the help..


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