Motor Vehicle Maintenance & Repair Stack Exchange
Motor Vehicle Maintenance & Repair Stack Exchange

Questions tagged [cylinder]

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

52 questions
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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 Veyron is probably more accurately a double-V-16,…
BillDOe
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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 back up easily and the engine started sputtering…
Zaid
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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 compensate for the change in cylinder dimensions? do they…
Shobin P
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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 needed to be readjusted again (to a startup…
amphibient
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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 level. I know the measure because I drained the…
amphibient
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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 below). It doesn't go deep, and I don't think it…
Iqbal Khan
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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 shims between 0.10 to 0.14 mm. When I inserted…
Aram Alvarez
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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) I can't guarantee a bit of the residual dirt from…
VincentAlpha
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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 stuck valve. One of the cylinders had less than 50%…
Mike in Coloma
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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 damaging it)? I believe they are Nikasil coated, the…
Max
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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 this happens and whether it is fixable. Do…
I have no idea what I'm doing
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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 mileage car but after switching to non-synthetic one…
method
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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 need to get this done with whatever (s)crap I have…
Aram Alvarez
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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 cylinder. The hose is a standard 3/16" pipe. I've…
Amr Bekhit
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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 go past 65. I put my hand on the intake for that…
amphibient
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