Questions tagged [head-gasket]

A type of gasket used between the cylinder head and engine block to seal the combustion chambers and cylinders, oil galley's and coolant galley's.

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17
votes
3answers
5k views

Is my head gasket cracked?

My wife hit a large puddle of water in her 2006 Mazda 5. Until then it was running fine. The check engine light came on and car shut down and would not start again. Mazda says it is a head gasket. Is ...
13
votes
3answers
20k views

Does increasing head gasket thickness make it more failure-prone?

A well-known fact when adding forced-induction to an engine originally designed for naturally-aspirated applications, is that it may be necessary to reduce the compression ratio to counter the ...
11
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3answers
27k views

What is a head?

Due to this question I now have a fairly well-rounded understanding of what a head gasket is. I assumed that sometimes, when people would talk about "heads" that this was just an abbreviation of ...
9
votes
5answers
128k views

How to test if head gaskets are blown?

Is there a definitive way to test whether head gaskets in most engines are blown, without actually reaching for the gaskets themselves (at which point you might as well go ahead and replace them) ...
9
votes
2answers
1k views

What makes some engines more sensitive to head gasket failure?

What are some of the reasons some engines are more prone to head gasket failure? Is it the way coolant and oil passages are designed and distributed? E.g. Subaru is notorious for head gasket leaks.
9
votes
2answers
13k views

How do I go about replacing the head gaskets in my Dodge truck?

It's a 1999 Dodge Ram 1500 4x4, Laramie SLT, automatic transmission, 5.9l magnum engine, and crew cab (222k mi). It seems to have some head gasket leaks, as there is some coolant burning. I have only ...
9
votes
1answer
1k views

What exactly is a head gasket?

From what I have gathered, a "head gasket" is an important part of the engine on most cars, but that is about it. What is a head gasket? Where is a head gasket? Why is it necessary?
8
votes
2answers
4k views

Blown Head Gasket always goes hand-in-hand with Engine damage?

Does a blown head gasket most likely always mean there is engine damage? In your experience have the majority of cars you've seen with blown head gaskets also had engine damage?
8
votes
2answers
1k views

Head gasket sealer or head gasket replace

So, I posted here and ultimately decided the mechanic was lying to me. It turns out I was wrong. Overheating at idle - mechanic says head gasket The immediate overheating issue WAS due to the broken ...
8
votes
2answers
3k views

What to do with damaged alignment dowels in block?

Just took the second head off the 98 Subaru Outback I'm working on and I found one of the alignment dowels was badly crimped over the gasket for about 1/3 of its circumference. I have no idea how it ...
7
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2answers
1k views

2006 wrx overheats going slow but not at speed

my 2006 wrx heats up into the red going slow on back roads but is fine and shows no signs of any issue going fast. what is the deal? blown head gasket?
7
votes
1answer
33k views

Can a blown head gasket cause overheating, without losing coolant?

My 2006 Subaru Outback overheated when my wife was driving. I got to the car that evening and its radiator was pretty low. I refilled it, and the car ran fine for a week. Then it overheated again. ...
7
votes
2answers
283 views

Coolant in engine... Head gasket going

I have an 05 Equinox, and while idling it sometimes overheats. We have to continously add coolant every week. If this was the only problem, I'd fix it, but, there's other issues as well, and combined ...
7
votes
4answers
24k views

Coolant still in oil after head gasket change?

I'm a noob, I admit it. but I did things mostly by the book. I had the heads reworked I scraped the top of the engine block clean I installed the head gasket dry as per the instructions. I didn't ...
6
votes
4answers
2k views

2003 Subaru Outback Legacy, Blown Head Gasket

The past month I have been refilling my empty coolant reservoir before each trip. My most recent trip I noticed every few moments I would lose some performance, the RPM's would stay the same but my ...
6
votes
3answers
45k views

Overheating at idle - mechanic says head gasket

My car has been overheating at idle after a long period of time - perhaps 20-30 minutes in traffic. If I drive, it immediately starts to cool down again. I don't drive often so it hasn't been an issue ...
6
votes
2answers
30k views

Tools needed for smooth Subaru head gasket job

I'm about to start replacing the head gaskets on a 1998 Subaru Legacy Outback according to the procedures described here: http://www.subaruforester.org/vbulletin/f66/how-replace-ej25-head-gaskets-...
6
votes
4answers
125k views

What does it mean when soot is coming out of my exhaust?

I have a 2001 Jetta Wagon (Golf Variant is caller in my country). Petrol engine. Usually rides school and back (15 miles) with engine between 2000 and 3000 rpm. Just did a 300 mile trip at 3500-...
6
votes
2answers
236 views

Why should I back off all valve lash adjusters until valves are closed when changing a head gasket?

My Suzuki Swift 01 is leaking coolant. I'm trying to change the head gasket. I've gotten as far as taking the camshaft cover off. See this picture: I'm not sure what Step 11, "Back off all valve ...
6
votes
2answers
9k views

Using a thicker head gasket when the cylinder head resurface limit is reached

I just bought a 2000 Civic 1.6L ( d16y8 ) with no compression in one cylinder. Four years ago, the engine overheated, and was completely rebuilt by the Honda dealership. One of the things on the ...
6
votes
2answers
84 views

1997 1.8t Audi Quattro - using coolant

I have an issue with my 97 1.8T Quattro using coolant. I've checked for external leaks and can't find any. The engine oil is still clean. Has anybody had this issue before? Is it possible for it ...
6
votes
2answers
3k views

Holden Captiva - Lots of oil pouring out the radiator expansion tank

On my 2012 Holden Captiva 2.2 diesel car the radiator expansion tank has filled with engine oil and now the oil is pouring out of the expansion tank. I am at a loss to why/how this has happened. Any ...
5
votes
2answers
29k views

I've got oil in my coolant but no coolant in the oil - Ford Triton V10 Motorhome

I have a Triton v10 engine in my vehicle I have oil in my coolant but no coolant in the oil. What could be the problem?
5
votes
7answers
217k views

The mysterious overheating honda civic

This is a tale that goes back about a year when I found my very first car. I needed it to commute back and forth to school. When I bought the car it worked great, everything I could have wanted. ...
5
votes
2answers
4k views

Replacing the head gasket in a 1993 Mercedes 300ce

Is replacing the head gasket in a 1993 Mercedes 300ce, an expensive repair? I've been told it is better to just replace the engine all together. Is it a tough job for a backyard mechanic or a diy ...
5
votes
1answer
73k views

Getting the best results sealing head gasket leak with Blue Devil

The 1998 Subaru Outback I've been having cooling system problems with turns out to have a combustion gas leak into the coolant. I suspected this but couldn't get a test to turn up anything; taking it ...
5
votes
1answer
640 views

Car won't start

My Chevy Spark 1.2 L 2012 model overheated and blew the head gasket. I replaced the gasket and spark plugs. The engine is turning, but it won't start. Plugs do get petrol. Engine sounds like sewing ...
5
votes
2answers
2k views

Block Test: Can't suck any more air, is this normal? (1999 Suburban)

I performed a block test recently to diagnose a problem I'm having. The liquid stayed blue, but I want to clarify I have done this right. The purpose of the test was to see if I could prove a head ...
5
votes
3answers
13k views

oil in coolant reservoir ... urgent ... Peugeot 206 Xri ... 2006

I need some advice I'm broke and I need the car (like it's not an option) it hasn't overheated yet . This just happened about a week ago, I'm driving way slower like 50/60kmh and 70/90kmh when in ...
5
votes
1answer
7k views

Is this brownish red gunk definitive evidence of a blown head gasket?

My 99 Nissan Almera has been sitting unused for a few months, and I just went out to start getting it up and running again. I noticed that the coolant in the reservoir was a bit low ( but clean ...
5
votes
2answers
50k views

Bubbles coming out of the radiator. Head gasket?

I was bleeding air from my Honda Civic yesterday. Everything was going well until the coolant was still bubbling after 40 minutes of bleeding. I did everything correctly. Turned the heater to max, I ...
4
votes
6answers
44k views

Coolant spills out of the overflow tank at high pressure

My '98 Subaru Forester spills all its coolant with very high pressure and overheats. I changed the radiator cap and did a flush, but still have the same problem. I added stop leak, but that did ...
4
votes
1answer
352 views

2002 Chevy Blazer - Oil in coolant

I have a 2002 Chevy Blazer with 237755 miles. I was just informed that I have a blown head gasket and oil is leaking into my coolant. On my way into work this morning my check engine light was ...
4
votes
1answer
1k views

Non-blown blown head gasket

06 Solstice, 2.4L Ecotec LE5 (GM inline 4). Again. I had an overheating issue recently, where the temp went from ~200 to ~290ish very rapidly. I shut the car down and had it towed home. A few days ...
4
votes
1answer
7k views

Diagnosing a blown head gasket - can I use a compression gauge?

My '97 Jeep XJ Cherokee w/ 4.0L inline-6 engine runs a little hot and it overheats when driving on the highway for longer then an hour. The coolant temp slowly creeps up until it boils over. I've seen ...
4
votes
1answer
1k views

'08 Kia Spectra won't start after head gasket/timing belt replacement

We got this little KIA for a great deal with only 102k miles on it. Probably put less than 1k miles on it before the radiator split open on top, and it quit. (We were driving on the highway with ...
3
votes
3answers
80 views

What does radiator water in the cylinder well indicate?

The vehicle was running fine last week. Stood for a few days and then when put under load (flooring it) the 2nd cylinder was found to be misfiring. Popped off the engine cover and removed the 2nd ...
3
votes
1answer
2k views

Bubbles in radiator despite several cylinder head overhauls

I have a Nissan FB13 Supersaloon. The car started having radiator problems when the radiator was blocked. After repairing the radiator the engine started building pressure and you could see bubbles ...
3
votes
1answer
2k views

Why would a blown head gasket burst the coolant tank?

The coolant tank on my 2.3l duratec (Ford Transit) just burst while it was at the garage for an MOT. The mechanic said it could have been caused by a blown head gasket, but didn't explain any further....
3
votes
2answers
615 views

Subaru 2002 Impreza 2.5 TS - Head Gasket

My Subaru started overheating; it had run out of coolant completely. Once I refilled the coolant, the car ran about a 1.2k mile trip just fine without any overheating. Recently, the car started ...
3
votes
1answer
232 views

Can you leave heads sitting on a gasket overnight before tightening down?

I need 16 for both heads but I only bought 8. It's a Fel-Pro fiber gasket that gets installed dry but there was a little adhesive, from the factory, on there. I guess my worry is that the adhesive ...
3
votes
1answer
4k views

Burning smell when getting out of the car

I sense a burning smell when getting out of the car (Nissan Maxima 02 V6). I am pretty sure it is an oil leak from somewhere based on the odor, but not sure where else to look for. The smell was ...
3
votes
1answer
2k views

Could oily sludge in cooling system affect engine temprature?

I have a BMW 530i 2007, the engine gets hot up o 115 degree of celcius, it actually fluctuate between 95 to 115(which is a little bit higher than normal specially when the outside temperature is 5 c) ...
3
votes
2answers
947 views

Is it possible to tell if a head gasket is bad just by looking at it?

I bought this truck with a blown head gasket. I thought it would be fun to fix it. I just got both heads off but the gaskets themselves don't look broken anywhere. Is it possible the gasket is good ...
3
votes
2answers
468 views

Rover 25 Head Gasket replacement - is it a long-term fix?

My Rover 25 (2004, <50k) began overheating and the nearest-to-me-at-the-time garage (not my usual one) which I pulled in to diagnosed head gasket failure. They gave a £700 estimate for a new head ...
3
votes
3answers
1k views

Oil in my radiator fluid tank?

I have a 97 Ford F350 with the 7.3l powerstroke diesel engine. There's oil where my radiator fluid should be. Do I have a blown head gasket?
3
votes
2answers
1k views

Is it possible to have a bad head gasket (or cracked head) without a loss of compression?

Vehicle/engine is a 1997 Jeep 4.0L inline-6 Cherokee Sport. I just got my oil sample analysis back from Blackstone Lab. Here it is. They say there's coolant in the oil, as indicated by the ...
3
votes
5answers
98k views

White smoke from tail pipe and loss of power when accelerating

I have a 2011 GMC Sierra 1500 V6 with 145,000 miles. For about the last 6 months or so when I start the vehicle after it's been sitting for a while, a very large plume of white smoke belches out from ...
3
votes
1answer
330 views

Bolt SITTING in car after Head Gasket repair?? 2005 honda civic won't go above 4,000 rpm

2005 Honda Civic won't go above 4,000 RPM--CEL throwing P2646 ('A' Rocker Arm Actuator System Performance / Stuck Off Bank 1) Just got my head gasket replaced, but then CEL came on so I took back to ...
3
votes
1answer
1k views

Low compression and will not ignite after broken camshaft pin and replaced head and gasket

My 95 Geo Metro Lsi 1.0L had a blown head gasket. I replaced the gasket and drove the car for approximately 120 miles before it started spitting and sputtering. Then it died just before I got home. I ...