Questions tagged [cylinder-head]
Cylinder heads (commonly just called "heads") are the big piece of metal which caps and seals the end of the cylinder bore.
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Properly diagnose coolant leak after head gasket repair?
I bought a BMW E46 330Ci (M54 3.0L Engine) that was not properly maintained. It was leaking coolant and sputtering white smoke and water from the engine (didn't sound smooth). Coolant pipes were also ...
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What is the cause of head gasket failure between cylinders?
I have 4 cylinder Renault Clio gasoline car with 150 000 km. I had my head gasket replaced, because it blew between cylinders(rough idle,..)
It was cheap job, new gasket held nicely, but then some ...
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What tools and/or equipment is needed to replace the cylinder head on a 2003 Chevrolet Trailblazer 4.3L V6?
So, I was away for a few months and when i returned, my vehicle had a cracked cylinder head. Long story, but i got a replacement cylinder head. I know a little about cars, but far from a master ...
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2010 Subaru Legacy 2.5L CVT - Torque Sequence / Specs for Cylinder Head Bolts
I can't seem to find the specs for this model year online anywhere.
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Honda civic 03 overheating, checking the cylinder head and block for cracks?
I have 150k on my 03 Civic it has overheated several times. I can drive the car around town without it overheating, but when I drive it on the highway for an hour and it will overheat. I thought I had ...
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Lots of smoke after brand new head and head gasket install?
Just installed brand new head and head gasket in my 2001 Honda Civic SOHC. The block was machined and new head bolts were used.
I started it up ran for a short couple minutes and shut it off due to ...
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Reverse flow head vs Cross flow head
Wikipedia says that Cross Flow cylinder heads induct the charge better because the gases doesn't have to change direction from intake to exhaust. Thus the higher inertia of flow of gas in one ...
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Head bolt replacement on a Mustang gt 2005
I had the engine on the car rebuilt and when the shop tried to start the car they found out that they had to use new phaser bolts. In less than 10,000 kilometers the engine is overheating and I ...
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Understanding the process of tightening head bolts properly
In some cars like some Peugeot & Citroen models, there is a specific stage during the process of tightening the head bolts. For example, in Haynes manual of Peugeot 405 it is stated that head ...
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Adjacent exhaust valves in a cylinder head
There are some engines in which you can see two adjacent exhaust valves in cylinder head. The following head (Chevrolet Small Block) is an example:
Is it true that this particular head design causes ...
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I've got oil in the coolant, but no coolant in the oil - Renault Twingo RS
I just checked the fluids of my Twingo RS and made de discovery that there is oil in the coolant. So naturally i thought headgasket. But there is no coolant in the oil, no smoke out of the exhaust, no ...
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Feasibility of replacement of Subaru Outback 2007 3.0L Cylinder heads
As noted I have a 2007 Subaru Outback with a V6 3.0L engine. It appears to be front-wheel drive.
The head gasket(s) need replaced and possibly the cylinder heads. I used to work on cars 25-30 ...
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2004 Lincoln Navigator 5.4L 32v DOHC Broken Lower Intake Manifold Bolt in LH Cylinder Head
What started off as a broken heater hose quick disconnect that dumped all the coolant and tripped the cylinder head iverheat protection ended up with me removing all hoses, upper intake/plenum, both ...
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4.3l V6 chevy head bolt placement for long and short bolts
Putting back together my chevy silverado 2001 4.3l V6 after head gasket replacement and I don't remember where the 2 short bolts go in the head. I find plenty of info on the torque specs and ...
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What type of valve spring compressor tool do you use in a 2002 Ford Escape?
It'd be awesome if the engine had a name because I know other makes and models use the same engine. Anyhow I know OEMTOOLS 27040 doesn't fit because I tried it already. I was thinking of trying ARES ...
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Head Gasket issue , Coolant burning/mixing in the piston, white mayonnaise substance
I had all the symptoms of a head gasket issue in my Vauxhall Corsa 1.4 ltr (2012) A14XER Engine.
Mayonnaise like white/light brown sludge everywhere. Rocker cover, Oil Dipstick, Oil Filler Cap. ...
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Likelihood of every piston ring corroding the same rate
I performed a rebuild of my both cylinder heads on a V6 engine, in order to grind leaky valves. I performed a test of each valve pouring isopropyl alcohol in the intake/exhaust chamber and waiting ...
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Understanding "torque-to-yield" concept
Can you help me understand the general "torque-to-yield" concept, which is often used for head bolts. In the case of my Tacoma, the head bolts are specified to be torqued to a spec of 27 ft/...
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Cleaning head bolt shafts
I am about to put my two cylinder heads back in and did some preliminary finger fitting of a bolt in every one of the 16 shafts to make sure it goes in smoothly, i.e. no gunk/debris impeding the fit. ...
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How many times can you go through a torque sequence when installing heads? I'm worried I messed up and should try again but don't wanna make it worse
2002 Ford Escape
Cylinders
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Rear Bolt Order (see picture below)
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7135
Front Bolt Order
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Torque Sequence
1 30 ft lb
2 tighten 90 deg
3 loosen 360 deg
4 30 ft lb
5 turn 90 deg
6 turn ...
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Head bolt torque settings for Daewoo Matiz 800cc 2004/5
I'm looking for the Head bolt torque settings for Daewoo Matiz 800cc 2004/5. My research yielded 85--90 NSm from here, but it does not seem correct. Another site stated 65-70Nm.
Any suggestions on ...
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How much should you clean dirty pistons and valves when you aren't removing them?
I took the heads off so I could get some broken exhaust manifold studs out and retap (actually I was advised to use a Heli-Coil instead so doing that) one of the other stud holes.
The piston heads and ...
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Trying to find out if it was the head gasket or not
My 98 Ford Ranger's radiator cap stopped sealing the other day. It ran hot and started backfiring while I was trying to make it home. After I let it sit long enough for it to cool, I figured out that ...
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Testing valve grind job that previously leaked
I had a leaky intake valve so I took that cylinder head off to grind it. Before grinding, I tested that it was indeed leaking and that the other two cylinders in the head did not by setting it on ...
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Carbonized combustion chambers
I just took one of my cylinder heads off to fix a leaky valve(s) and the combustion chambers look very carbonized. I hope this is not from oil getting into the chambers.
Present:
6 years ago, when I ...
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Effects of intake valves leaking
I just measured cylinder leakdown rates on my 2007 Tacoma V6. 5 out of the 6 cylinders had retention rates of 75-85% (leaking 15-25%) but my cylinder 4 (left engine bank in the middle) was leaking ...
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How to clean cylinder head and engine block contact surface before gasket change?
How should I clean my cylinder head and engine block contact surfaces before a head gasket change? There is residue paint from the old gasket on both the head and block side. Should I do it ...
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Replaced Head on Propane Engine; Now I have too high compression. Why?
I hade a misfire in my propane burnisher (buffer). The Exhaust valve is stuck and wont move, as a result the push rods bent. Manufacturer recommended I get a new head. I replaced the head according to ...
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Can one detect coolant leak due to blown head gasked by visual inspection of pistons/spark plugs?
I have problems with my 2004 Honda Civic. My engine overheats and there is no hot air coming to the cabin, even if the temperature gauge shows Hot. Every mechanic I know told me that it is a clear ...
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Can I run on 7 cylinders if I shut the injector to that cylinder off?
I have a 2006 F150 5.4 Triton 3 valve. I've had a really bad issue, where a socket is stuck in my spark plug chamber and everything has failed to get it out.
The option I'm left with now is ...
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Why would an engine leak oil only at high speed?
Small 90s econobox, 4 cylinder. ~300k miles. Stickshift, so engine speed is always proportional to road speed at relevant freeway speeds.
Crossing the country recently, I observed extremely high oil ...
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Cylinder head and block replacemnt
Wonder if you could help. I have a 1988 fiat ducato highwayman.
My motorhome was taken into an expert engine services garage.
The original problem was cylinder head gasket. The garage removed the head ...
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Head bolts over torque now what?
Doing a head gasket job on a Civic D16Y7 bought a brand new torque wrench (from the hft) turns out the torque wrench was/is faulty (won't even click clamped to a vice) over torqued a couple head bolts ...
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How should I flush out a head gasket sealer?
I purchased a 2002 Ford Taurus, little knowing that it had a head gasket leak. After it was driven for a week or so it started overheating. I am assuming that the person that I bought it from put ...
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Head repairs on one side only
My church is looking to buy a used high milage van from a dedicated lease company. Good reputation. I have education but little hands on and the church uses my input for van preinspection. I'm not ...
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Where do you install cylinder heads, camshafts and valves in different engine types?
I am trying to learn about engines, so my question is where do valves, camshaft etc go inside different engines? I see different engine have them in different places, base on if the engine is a inline,...
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Should you use gasoline on cylinder head gasket
I'm an amateur mechanic.
Recently I met an experienced car mechanic and he told me that if I dip a new out of the box cylinder head in gasoline mixed with engine oil for a couple of hours, it would ...
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Coolant leaking rear of engine/bellhousing area. Head gasket leak?
I have a 1998 GMC Savana with a 5.7L v8. I was losing coolant so I went underneath and saw little droplets near the oil pan. I would park the car for a week and come back and all the coolant would be ...
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Hot Tank Solution for Aluminium?
My aluminium cylinder head is caked with oil and carbon. I’m going to be cleaning that along with other steel/iron parts. I’m planning to make a DIY hot tank to boil the parts in but what can put in ...
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Do cylinder heads on boxer engines wear out evenly?
I know inline engines wear out unevenly on the cylinder heads with one usually egging out more but I don’t know whether or not boxer engines do and I was curious.
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Does lapping valves ensure the seal of the valves?
I am building a 450-500 hp honda civic with a d16y8 head, i purchased brand new valves , and i was wondering how do I get these valves to seat and seal the chamber for combustion? Is lapping the ...
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97 Subaru overtemp
I picked up a 97 Subaru Outback at a very low price. I knew the head gaskets were bad and for the price I thought it would be a fun project. I am planning to replace the engine but thought it might be ...
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Can push starting a motorcycle cause damage to the piston rings?
About a month ago I noticed white smoke coming out of my motorcycle exhaust. Not constantly, but it would maybe start smoking and then stop after riding a little. Or maybe keep smoking even after ...
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Ethanol or non-Ethanol?
Where I live gas is at $2.50 at 10% Ethanol at 87 octane and $2.90 for non-ethanol at 89 octane per gallon. I understand that smaller engines do not do well on ethanol. Is the loss of efficiency from ...
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Can I use cylinder compression to conclude the valves are adjusted
Today a friend told me that my exhaust gas smelled funny and that I should check my valves. I don't find it very likely since the engine is around 6000kms old. Can I avoid the trouble by checking the ...
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Which is the Toyota specific toolset name in order to change head gasket on a ᴠᴠᴛ‑i engine?
My mechanic told me reassembling the cylinder‑head for a ᴠᴠᴛ‑i engine requires specific Toyota tools.
His car part provider isn’t selling them, and as he is unable to use a computer or a mobile phone ...
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Can I determine if a blown head gasket has caused significant engine damage before removing the heads?
I know i have a bad head gasket, but i didn't know until the car utterly lost power one day driving it until it stalled on me. it all happened in like 10 seconds - i was going up a hill, and realized ...
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Oil still in coolant 99 Accord
Took my car to a shop and I honestly don't think they are the best even though they seemed like they knew what they were talking about. Long story short they did a head gasket repair, replaced the ...
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Physically broken camshaft position sensor
The check engine light on my 2006 Toyota Tacoma V6 went on and, when I did OBDII disagnostics, it turned out I had P0348: Camshaft Position Sensor A.
I took the sensor out and it turned to be ...
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Blown Head gasket for triton
My 2005 tritons overflow is bubbling every time I go to point A to B and sometimes coolant pours down to the floor I know that it’s a sign of a blown head gasket or an cracked head.. is it still safe ...
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