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Questions tagged [cylinder]

Related to the area of the engine block where the piston travels.

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22 views

2009 Chevy Avalanche #6 Cylinder misfire

I've read about the way the system works to shut off V8 to V4. 6 is one of those valves. Truck is running really rough when idling. Gas mileage is reduced. Can only #6 misfire? If so, how to fix? ...
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0answers
30 views

Rear brake cylinder's piston “really” stuck: how to remove it?

The rear brakes in my hobby car are drums type. One of its brake cylinders have one of the pistons "really" stuck: it won't move by hydraulic force by pressing the brakes pedal; it won't move by ...
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1answer
32 views

Toyota 4EFE Cylinder head

Why does the Toyota 4EFE engine have 3 Allen Heads in the middle of it? The Cylinder head will not remove from the block. Do these Allen Heads need to be removed to separate the cylinder head?
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1answer
172 views

How are compression rings lubricated?

My question relates to the lubrication of cylinder walls and piston rings. It is my understanding that pistons in cars consists of 3 rings; two compression rings and the oil/scraper ring. As far as I'...
3
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1answer
93 views

2008 GMC Yukon 5.3L engine vibration at low speeds with cylinder deactivation

I have a 2008 gmc yukon 5.3L that has developed an engine vibration at low speeds with cylinder deactivation like when coming to a stop. Does not vibrate while normal low speed cruising but when ...
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0answers
3k views

Brakes go to floor after bleeding

I've got a 97 Honda Civic, no ABS, front disks, and rear drums. A few days ago I had to slam on my brakes and I locked up the tires, and after that my brake pedal went to the floor. I got home, and ...
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1answer
2k views

Drove with radiator cap not tight all theway

....I didn't know my radiator cap was loose till I saw my car overheating...eventually it wouldn't accelerate as I pulled over n opened the hood I saw it was missin n their was radiator fluid ...
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4answers
929 views

Can i Use The Same Old Bolts On The Same Cylinder Head? [duplicate]

Car: 2010 Passat CC 1.8 TSI Would it be a really big problem if I use the old cylinder head bolts or not?
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0answers
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Fiat Uno 1.0 cylinder head valves

I would like to know how to remove the valves from the cylinder head.
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2answers
99 views

Problem with float height on a Honda CB400T

I might have a problem with the float height on my CB400T from '78. It seems to be running rough at a constant speed, however when i accelerate it'll go away until constant speed again. It's like ...
4
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1answer
49 views

Pistons ordeal: more pistons problems; two issues in one question

So, still having problems rebuilding this old engine (Skoda Estelle 120, 70's, RWD, rear mounted engine). First of all: getting new parts is out of the question since I have no access to those. So I ...
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1answer
156 views

Check engine light mysteriously turned off

I had a check engine light indicator turned ON this morning. I took it to AutoZone to get the code for the CEL and got a cylinder misfire on two of my cylinders. When I started my car back up the CEL ...
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3answers
16k views

Will boring a cylinder affect its longevity thereafter?

I had to deal with a worn out cylinder recently and was suggested to bore the engine which seems perfectly normal. I am assuming the compression ratios will change so what do mechanics do to ...
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1answer
504 views

Are wet cylinder liners' shims utterly neccessary?

This old Skoda engine I'm rebuilding has wet cylinder liners, and uses thin copper shims in their seats. The manual talks about liners protrusion between 0.14 to 0.32 mm above the block, and available ...
4
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1answer
137 views

Is it really necessary to resurface cylinder and substitute piston?

I believe this is common in motorcycle maintenance, I have heard in some places that, once you get the piston outside the cylinder there is no way back, you need to resurface the cylinder and get a ...
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3answers
6k views

Side effects of small amount dirt from spark plug well

I was changing a bad spark plug on my F150 4.6L V8 and despite cleaning the spark plug well as thoroughly as I could muster (rearmost cylinder and under the dash pretty well so very little clearance) ...
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1answer
60 views

Is this the correct brake union for my cylinder?

I'm replacing the rear brake cylinder on my 2004 Hyundai Getz 1.3. Although the cylinder comes with the bleeder nut, it doesn't come with the union nut that is used to connect the brake hose to the ...
5
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1answer
206 views

Stuck valve, loss of pressure. Risky or only poor performance?

I have a 1998 Toyota Tacoma 2.7L 4cyl with 202,000. The engine has been running rough and will occasionally sputter and die when I let off the gas pedal. I had it diagnosed and they think it's a ...
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2answers
698 views

Cleaning pistons and cylinders with oven cleaner

Can I use oven cleaner (composition: 5-15% aliphatic compounds, 2-aminoethanol, butane and propane...) to clean the carbon off the cylinders and pistons of my BMW R80GS 1991 Motorbike (without ...
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3answers
4k views

How to fix an injector leaking into the manifold?

I suspect I have an EFI common rail injector that fails to hold pressure and slowly leaks petrol into the manifold when the engine is shut down (and possibly while running). I am interested in why ...
4
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1answer
296 views

How bad is 30% cylinder leak?

I recently performed a cylinder leakdown test searching for a cause for oil loss. On 5/6 cylinders, I pumped it up to 90 psi on the left gauge and the right gauge was between 75-80. Only 1/6 wouldn't ...
8
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2answers
106 views

Cylinder misfire after leak down test

I am getting cylinder misfire OBDII error codes after performing a cylinder leakdown test. During the test, I was turning the crankshaft to reach TDC for each cylinder and I'm now thinking whether it ...
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4answers
3k views

Cylinder leak down test to detect oil leakage

My 2007 Tacoma loses about 3.5 qt of oil out of 5 every about 1500 mi. I know it's low because the engine starts periodically rattling, I don't know which part but it's 100% correlated to the low oil ...
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1answer
716 views

Small crack/gap between cylinders on block

I was doing a head gasket replacement onnmy 86 Kawasaki ninja gpz1000 and I while cleaning the gunk off the top of the block I noticed a small gap/crack in between two cylinders (Pictures are linked ...
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2answers
1k views

Why is a W-16 called, well, W?

The term "W-16" seems to imply some sort of configuration that resembles the letter W, which implies three banks of cylinders with one sharing a common cylinder head. In fact, the Bugatti W-16 in the ...
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1answer
2k views

Engine consuming oil and white smoke comes out when starting the engine while cold

my car has been consuming oil for a while now but only recently has started to smoke when it is started while the engine is cold. I thought that maybe because I am using a synthetic oil in a high ...
15
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3answers
4k views

Afraid to crank engine - how can I tell if my cylinders are flooded with water?

Backdrop We had really heavy rains here today. I was in my '99 M5, idling in traffic when I noticed the brake pedal feel became really notchy. When I let go of the brakes the pedal would not travel ...