Need head gasket job advice
11-20-2018, 03:54 PM
#21
So, just to be clear, I should have casting no. 10088113 on my 89 C4, and not to worry about my heads being prone to cracking?
Can the casting number be read without removing the heads?
Can the casting number be read without removing the heads?
11-20-2018, 04:14 PM
#23
Melting Slicks
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PS: Regarding cracks..
It is an article of faith that regardless of casting number, any time you remove a cylinder head, especially after a gasket failure (Because they often involve overheating), and especially an aluminum head, you at least look at the area between the valves for a crack.
It's probably fine, but it takes two seconds to clean that area up to check and be sure. If you overheat a head and crack it, that's generally the area that cracks first.. And you do not want to do the job and put it all back together only to find you missed a crack.
It is an article of faith that regardless of casting number, any time you remove a cylinder head, especially after a gasket failure (Because they often involve overheating), and especially an aluminum head, you at least look at the area between the valves for a crack.
It's probably fine, but it takes two seconds to clean that area up to check and be sure. If you overheat a head and crack it, that's generally the area that cracks first.. And you do not want to do the job and put it all back together only to find you missed a crack.
11-20-2018, 04:19 PM
#24
Melting Slicks
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This is what you are looking for.. Yours are probably fine, but, you should take a quick look anyway. You do not have to remove the valves to do this, even though they did in the pic.
https://dannysengineportal.com/wp-co...ed-678x381.jpg
https://dannysengineportal.com/wp-co...ed-678x381.jpg
Last edited by confab; 11-20-2018 at 04:19 PM.
11-20-2018, 10:53 PM
#25
Drifting
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Finalist 2020 C4 of the Year - Unmodified
If you can't find a FSM? A subscription to alldatadiy is cheap and a really good alternative.
I paid 26 bucks for a year, I think?
For a lot of jobs I like it better.. Like wiring for example. You can print out a diagram, drag it all over the car, write on it, get it filthy.. then just throw it away and print a new one next time.
I paid 26 bucks for a year, I think?
For a lot of jobs I like it better.. Like wiring for example. You can print out a diagram, drag it all over the car, write on it, get it filthy.. then just throw it away and print a new one next time.
11-26-2018, 10:40 PM
#28
Relieve fuel pressure
OK, I have decided to seriously look into doing this myself. Got a shop manual, looking under Intake Manifold, 2nd step is to "relieve fuel pressure refer to section 6E3". looked and looked there but no luck. How do I "re;ieve fuel pressure"? thanks
11-26-2018, 10:51 PM
#29
Relieve fuel pressure, M.A.F., T.P.S., I.A.C. ?
also what is M.A.F., T.P.S., and I.A.C. ? thanks again
11-27-2018, 12:03 AM
#34
Melting Slicks
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MAF = Mass Airflow Sensor. (Connects to your air filter)
TPS = Throttle Position Sensor. You will find it on the PS of the throttle body. It has three wires and mounts up high. Its job is to tell the computer how hard you are pushing on the throttle.
IAC = Idle Air Control. 4 Wire plug below the TPS. It is kinda like a computer controlled vacuum leak and it permits the computer to adjust the idle speed..
TPS = Throttle Position Sensor. You will find it on the PS of the throttle body. It has three wires and mounts up high. Its job is to tell the computer how hard you are pushing on the throttle.
IAC = Idle Air Control. 4 Wire plug below the TPS. It is kinda like a computer controlled vacuum leak and it permits the computer to adjust the idle speed..
Last edited by confab; 11-27-2018 at 12:04 AM.
11-27-2018, 12:08 AM
#35
Melting Slicks
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Go to autozone or rockauto if you are confused, and put in the make and model of your car, then search for the part (Mass Air
Flow Sensor - For Example) and they will show you a picture of what you are looking for.
Flow Sensor - For Example) and they will show you a picture of what you are looking for.
