Problems with Civic.
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Alright guys I need some help. I have a 1993 Honda Civic DX that I'm having a bit of a problem with. The other day I was driving it, and with no warning all of a sudden the idle got weird (sounded like I had a very agressive cam), and it start smoking like crazy. The temperature was fine, so I got out to try to diagnose the problem. It was smoking pretty good, and you could definitely smell anti-freeze. I checked the oil, and there is no signs of antifreeze there (not headgasket?). However I can't see any leaks anywhere, I'm not really sure what to look for. A friend told me to perhaps try bleeding the coolant system to make sure it isn't "vapor locked." What do you guys suggest me trying, or what's the next step in diagnosing the problem. BTW, no CELs. Thanks in advance for the help.
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does water run through the intake manifold and or tb on a civic? It did in nicks accord.. might be leaking into the intake manifold.
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MY hatch had a weird idle like it would go up and down when idling from 1000 to 1500 or so It leaked coolant but I never could find anything then I realized something had to be up and filled the coolant and let it run for 15 mins and warm up. Found my coolant leak
I took it in and it was the water pump causing the idle, sputtering under load and the leak. So I guess check that. Mine is a 92.
Matt
92 Civic HB
JDM d15b w/14b@8psi
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Don't take this wrong. But, how does a water pump get water into any part of the engine that would cause it to miss, spit, sputter? That's impossible. However, there is cooling lines that usually run into and out of the throttle body on most cars. It is used to pre-heat the air charge coming into the engine for cold starts. I also would highly doubt that it would be coming from there. But, it never hurts to check. I dont think there is a way that the coolant can migrate to the air intake portion of the throttle body.
I would not count out your head gasket Blake. In fact, I would suspect it first and foremost. It can leak into the cyl and still not show up in the crankcase. But usually, there will also be compression leaking into the cooling system at the same time causing it to want to boil over. Like I said "usually". As far as I know, (on a non-turbo car) the head gasket is the only way you will get coolant into the cylinder and burn it off so it comes out of the exhaust. I would suggest getting it to a shop and having a few tests run such as a coolant pressure test and an cooling system diagnosis. this is a test you can run on your cooling system that alows you to see if exh gasses are present in the cooling system. If there is, then you know your problem. You may also do a comperssion test and a cyl leak-down test to see if anything shows up there. I hope this helps you.
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weshole wrote:
I dont think there is a way that the coolant can migrate to the air intake portion of the throttle body.
.FINE.
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weshole wrote:
Don't take this wrong. But, how does a water pump get water into any part of the engine that would cause it to miss, spit, sputter? That's impossible.
I guess we will find out friday when the pump gets replaced. That is what the mechanic said and he said hes done a couple others so whatever. LoLMatt
92 Civic HB
JDM d15b w/14b@8psi
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seanjohn wrote:
Check the oil if you think it's the head gasket, easy way to find out. Does it idle funny all the time, or just when it's cold or just when it's warm?You can have a blown head gasket and still have no trace in your oil. It all depends on where it is blown at. If it goes into the cylinder itself and not into one of the oil passages, it may not seep into the oil pan. Especially if the engine has good compression. the rings may be doing there job and preventing the antifreeze from leaking down and forcing it to be burnt off and go out the exhaust.
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krzydrftr93 wrote:
I guess we will find out friday when the pump gets replaced. That is what the mechanic said and he said hes done a couple others so whatever. LoLI don't doubt your mechanics abilities nor do I doubt that his diagnosis that you need a water pump is wrong either. You may indeed need a water pump. They are replaced all the time. All that I'm saying is that in all my years in the automotive world and that's quite a few, I've never seen a water pump cause an engine to spit/sputter or even miss and the engine still run. Nor have I seen a water pump magically pump antifreeze anywhere in the engine to where it is going to cause it to burn off from the exhaust. Now, a water pump locking up completely and stopping the engine from running..... That, I have seen. But, every interference engine (most hondas) that I've seen that happened to has bent the valves and/or done worse. Either way, It required alot more than just a water pump replacement to cure the problem. Such as head coming off to replace any bent or broken valves and possibly even replacing a piston or two. If there is a something I am missing, PLEASE enlighten me. And please don't take this as me coming off as trying to be smarter than you either. I have been wrng before and if I was wrong now, it wouldn't be the last time for sure. In fact, I am always willing to learn somethin new. So don't be affraid to post something up. ANYONE?
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