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Thread: Head Gasket Blown

  1. #26

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    Re: Head Gasket Blown

    Quote Originally Posted by MessyHonda View Post
    fuel injection is so much easier....i give you guys props for sticking with carbs.
    You say this but it is far from true in another aspect, When those systems start giving you problems things turn south quickley because of all the possible theory towards solutions. Scan codes are only a small piece of the puzzle most of the time.



  2. #27
    3Geez Veteran MessyHonda's Avatar
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    Re: Head Gasket Blown

    Quote Originally Posted by roodoo2 View Post
    You say this but it is far from true in another aspect, When those systems start giving you problems things turn south quickley because of all the possible theory towards solutions. Scan codes are only a small piece of the puzzle most of the time.


    well its not as hard as you think. computers are part of our everyday lives. Myself i built my own computer...this is the computer that has helped me post the 13k+ post i have.i dont have a problem with it because i know how it work or how to fix it. most of the stuff that goes wrong is sensors(as a 20 year old car most of them should get replaced anyways). I like to be consistent, because with carbs it can run like crap one day and the next it can run fine.(you cant drive it up to 5000ft and expect the same performance with out tunning) and with fuel injection it compensates to make up for power most of our wiring is not bad.i have learned lots with this website and great guys on here like Pico..its not a new car with sensor on sensors....i got to drive my friends malibu and it does not have the same feeling because its all electronical not even spark plug wires...its werid how they make stuff now.

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  3. #28
    3Geez Veteran HondaBoy's Avatar
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    Re: Head Gasket Blown

    one of my customers has an '87 sedan just like mine. said it runs and all, for $800. lives in my neighborhood so i need to go check that out. if not to use it for a parts car, then another 3gee just to drive while i work on my original. just dont have enough time to work on my car. maybe because i'm weary of working on an engine thats still in a car. always have worked on engines that were out and on an engine stand with plenty of room to see everything. another thing, i started the car yesterday briefly. really sounds like the head gasket is blown between the cylinders, from other experiences. didnt get a chance to go borrow my teachers coolant system pressure tester. should i just dig into this project? i keep wondering that. i really dont like to start something and then have it sit for days at a time, but i think thats going to be the only way to get this done at this point.
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  4. #29
    3Geez Veteran lostforawhile's Avatar
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    Re: Head Gasket Blown

    Quote Originally Posted by MessyHonda View Post
    fuel injection is so much easier....i give you guys props for sticking with carbs.
    old school is so much nicer, fuel injection just isn't as much fun. besides you've seen one fuel injection system you've pretty much seen em all. and honda boy i can't find that piece but i'll make you another one.

  5. #30
    3Geez Veteran HondaBoy's Avatar
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    Re: Head Gasket Blown

    i thoght the temp sensor was screwed into the back of the carb. but i guess not? if not them yeah, i'd like to have those conversion fittings. thought i was going to have to make something else to addapt a temp sensor. got any pix of where its located on the carb manifold?
    Keep it HONDA. Or at least Asian.™
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  6. #31

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    Re: Head Gasket Blown

    Ok MessyHonda I was not trying to dis your point really, but what was your point anyway? we were discussing a particular issue here, all due respect to your skills but I have been in the biz a while and I was there for the transformation ..lol.. I had to totally relearn drivability diagnosis and most all areas of cars,changed as well, so I pretty much know a good bit of both worlds.And I be dammed heave ho, they changed it again in the past five years, now you have drive by wire, variable valve timing, cylinder cut outs, two ratio automaitcs, . it goes on and on with more technology.
    You are right, ultimate tuning can easily be accomplished with electronic fuel injection, but it is limitied to predesigned systems with internal parimeters. For your arguement, yes aftermarket reasearch and expensive lab created electronics can get you there $$$$ so as a hobbyist and dealing with a retro import like my 86 accord I will always defend the carburator and my personal choice of the underdog auto tranny, well at least that first one anyway..

    HondaBoy did you run a cormpression check or pull the plugs to confirm the head gasket? It is a wonder you didnt break a rod with that kind of water going in the Chamber, funny it was the head gasket being the weak point for uncompresable agents, must have been on its way already. zi really wanted to hear how much you were digging the weber difference

  7. #32
    3Geez Veteran HondaBoy's Avatar
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    Re: Head Gasket Blown

    must have been enevitable. i've run the car hard for about 6 years and over 80000 miles. it wasnt that surprising that the gasket gave out. probably a good thing, well when compared to all the other bad things that can happen when head pressure is too great. i can go do a compression check right now so i guess ill do that and see what else is up with that. i did one then not the others which i should have done.
    Keep it HONDA. Or at least Asian.™
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  8. #33
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    Re: Head Gasket Blown

    Quote Originally Posted by HondaBoy View Post
    i thoght the temp sensor was screwed into the back of the carb. but i guess not? if not them yeah, i'd like to have those conversion fittings. thought i was going to have to make something else to addapt a temp sensor. got any pix of where its located on the carb manifold?
    it's on the back of the manifold,it has a single wire attached to it. you also have two vaccume sensors screwed into the manifold,one controls your advance/retard on the dizzy, and the other controls the venting of the charcol canister.

  9. #34
    3Geez Veteran HondaBoy's Avatar
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    Re: Head Gasket Blown

    compression from the first cylinder starting at the front to the last was 185, 180, 178, 185. last i did a compression check it was 190 on all 4. so this leads me to believe that the two middle cylinders are leaking a bit. only problem is when they begin to compress with a plug firing. espececially when the thermostat has fully opened. but the water mixing with the oil has to be a cracked head or blow out gasket. also the water spewing out of the radiator fill hole after the thermostat has opened has me convinced it is the head gasket.

    ^thanks man
    Keep it HONDA. Or at least Asian.™
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  10. #35
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    Re: Head Gasket Blown

    The best test that will lead you to what is going on is LEAK DOWN TEST. It's the only test that will put air in the cooling system without running the engine & second guessing. Compression test isn't so accurate.
    Last edited by 88Accord-DX; 10-12-2007 at 07:55 PM. Reason: add on
    .

  11. #36

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    Re: Head Gasket Blown

    Quote Originally Posted by ddude2uc View Post
    The best test that will lead you to what is going on is LEAK DOWN TEST. It's the only test that will put air in the cooling system without running the engine & second guessing. Compression test isn't so accurate.
    Kind of confusing when you say leak down test, that is a term I am used to hearing while checking compression. I think you are talking about cooling system pressure check, you use the pressure tester... attach on end in place of the radiator cap, and then pump it up to the lb rating stamped on your radiator cap. watch the guage and see if the cooling system hold specified pressure,..lol or any pressure.
    It really does not sound like a head gasket blown here Im sorry, or cracked had either, but I hope you can get to the problem Hondaboy, whatever it is.
    It is normal to get some spew when your therrmo opens with the cap off. Also you have to purge the air out of the system.

  12. #37
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    Re: Head Gasket Blown

    Most people don't realize a leak down tester can also find a blown head gasket. Yeah, it's mainly a tester for valves & rings. There are 3 testers that can find a leaking head gasket. The coolant pressure tester, a compression tester & a leak down tester.
    .

  13. #38

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    Re: Head Gasket Blown

    You know, after reading this again I'm not convinced the head gasket is blown either. I would have expected much lower numbers from the compression test. Try it again with the radiator cap off and see if you can hear bubbles after each cylinder is pressurized. The water in the oil could be leakage past the rings. It wouldn't take all that much water to foul the oil. And about the radiator geyser; just the other day I had to change out my coolant temp sensor so I drained the radiator. When I was done I poured the water back in and thought everything was fine. I started it up and let it idle to warm up and after a few minutes I saw water boiling out the catch bottle. So I shut it off and let it sit to cool down a little. After starting it back up and revving the engine all the water in the bottle got sucked back into the system and everything was fine. There was just some trapped air in the system and it didn't clear until the water pump spun fast enough to build enough pressure.

    C|

  14. #39
    3Geez Veteran HondaBoy's Avatar
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    Re: Head Gasket Blown

    really? doesnt sound like a blown head gasket? water mixing into the oil, coolant blowing sky high out of the radiator fill hole when run for a few minutes. and not to mention this already happened to me with my diesel jetta, same symtoms. can you explain the water mixing into the oil after two oil changes? same thing happening each time, water mixing into the oil. if not the head gasket, then something has cracked. either the water passages surrounding the cylinder or cracked head between the oil passages. but then again it wouldnt run as good as it does in its current condition if those were true.
    Last edited by HondaBoy; 10-18-2007 at 10:51 AM.
    Keep it HONDA. Or at least Asian.™
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  15. #40

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    Re: Head Gasket Blown

    Two oil changes you say? Well then there is definitely *something* wrong. Could be a leak out to a coolant passage then. In any case you might want to pull the head off just to assess the damage even if it turns out the head gasket is ok. They aren't that expensive.
    Did you try listening for bubbles?

    C|

  16. #41

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    Re: Head Gasket Blown

    Quote Originally Posted by HondaBoy View Post
    really? doesnt sound like a blown head gasket? water mixing into the oil, coolant blowing sky high out of the radiator fill hole when run for a few minutes. and not to mention this already happened to me with my diesel jetta, same symtoms. can you explain the water mixing into the oil after two oil changes? same thing happening each time, water mixing into the oil. if not the head gasket, then something has cracked. either the water passages surrounding the cylinder or cracked head between the oil passages. but then again it wouldnt run as good as it does in its current condition if those were true.
    I cant tell but were you questioning yourself in that last sentence? If it is running ok and not missing on any cylinders, you may not have what you think is all I am saying.. All I can say is go look very carefully at the weber install section here, there are things that the weber kit instructions do not tell you about the install. And despite changing the oil sometimes you still have enough water in there to make a yoohoo, you still need to run the car a while to let the oil do its work and evaporate the water. I know what you are talking about the the jetta, you also smelled fuel real strong in the radiator too I would bet.. you had compression going into the cooling system.
    Just trying to help, and I hate to see something misdiagnosed and money thrown away...

  17. #42
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    Re: Head Gasket Blown

    Quote Originally Posted by roodoo2 View Post
    I cant tell but were you questioning yourself in that last sentence? If it is running ok and not missing on any cylinders, you may not have what you think is all I am saying.. All I can say is go look very carefully at the weber install section here, there are things that the weber kit instructions do not tell you about the install. And despite changing the oil sometimes you still have enough water in there to make a yoohoo, you still need to run the car a while to let the oil do its work and evaporate the water. I know what you are talking about the the jetta, you also smelled fuel real strong in the radiator too I would bet.. you had compression going into the cooling system.
    Just trying to help, and I hate to see something misdiagnosed and money thrown away...
    if you did that webber wrong coolant can be very eaisily being sucked into the cylinders.

  18. #43
    3Geez Veteran HondaBoy's Avatar
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    Re: Head Gasket Blown

    ok, here's something new. i found that as i spin the crankshaft, on the compression stroke on the middle cylinders i believe, i can hear air going into the crank case and valve cover. nothing into the coolant system though that i can tell. now whether or not it is the head gasket, the head indeed need to come off for inspection. i already have the gasket set so i'm not worried there. only paid like $60 for it though since i have an employee discount where i work.
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  19. #44
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    Re: Head Gasket Blown

    Quote Originally Posted by lostforawhile View Post
    na i have a piece around here somewhere i made that bolts to the firewall, it has the 1/8 bsp threads for the sender and i think the threads for the other two vaccume sensors. you screw in a 1/4 npt barbed fitting into each end. those go to the hoses that would have been in and out on the manifold. this moves everything off of your manifold,I was going to use it when i did the webber conversion,before i started the SU project.

    webbers don't like heated manifolds anyway.
    hey i made you one,i have to tig weld a bracket to it,and tap the 1/8 bsp threads for the sensor. this will allow you to hook up the temp sensor,and both of the temp controlled vaccume valves on the manifold. i put an extra 1/4 npt thread in one end,in case you need to send coolant anywhere else. if you don't use it it can have a 1/4 npt pipe plug put in it. you can get one at the hardware store.

  20. #45
    3Geez Veteran HondaBoy's Avatar
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    Re: Head Gasket Blown

    got any pix? thanks for your help. it is much appreciated.
    Keep it HONDA. Or at least Asian.™
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  21. #46
    3Geez Veteran lostforawhile's Avatar
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    Re: Head Gasket Blown


    two of the ports are for the two vaccume sensors,that screw into the manifold,the small one is for your temp sensor, you bolt this to your firewall,and the water inlet hose to the manifold goes to one end and the outlet hose to the other.

  22. #47
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    Re: Head Gasket Blown

    holy crap thats sweet man. tomorrow i have planned to start tearing the A20 apart. hopefully nothing falls through since its my day off. i should at least get the head off and be able to ascertain the damage.
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  23. #48
    3Geez Veteran lostforawhile's Avatar
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    Re: Head Gasket Blown

    hey try and pm me,and let me know whats going on, i will try to get the mounting plate on monday if i can. and i'll get with you about getting it sent. you'll have to get the fittings for the end, from the hardware store, i can't remember what size the inlet and outlet hose are. the threads on the adaptor are just standard 1/4 npt. you can get those from any hardware store, you just get the hose barb end to fit the hoses on the car. i hope this helps you out. you'll still have to block off the hose that comes from the original carb base,if you haven't already done so. it comes off of the water pipe.

  24. #49
    3Geez Veteran HondaBoy's Avatar
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    Re: Head Gasket Blown

    ok, that sounds good. i really havent had time to do much of anything. its kinda hard taking care of a house, going to school and working. but i plan to get this somewhat finished within 2 to 3 weeks from now. and i will pm you when i get things together a bit more.
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  25. #50

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    Re: Head Gasket Blown

    did you pick up that other Honda?

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