Question about 1994 Honda XR 250 R

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There is an oil leak,probably an o ring, in the top of the engine and we are having trouble getting it off, how do you take off the top to look inside, we have already loosened and taken off all the screws.

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Spark plugs out, all bolts out,...try a little prying at first if that doesnt do it then that means there still must be a bolt you missed.

Posted on Sep 13, 2009


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I have a 2004 Toyota highlander leaking oil, oil light comes on. Could it be the rubber rings?

a 2004 toyota highlander V6

this should be your engine type
The 2GR-FE is a 3.5 L (3456 cc)

if leaks are that bad
always check the engine oil level before you drive off

fixing oil leaks on motors
degrease whole motor top and bottom

start with replacing the oil sender it may be the cause of the oil light coming on
after degrease
lay cardboard or paper under the car
take out for a drive and park over the paper over night

this pin points most of the oil leak locations
leaks from a V6 motor
rocker covers/ spark plug tube 0 rings.engine seals
cam seals
front and rear engine seals leak often
sump gasket can leak

if oil consumption or light on continues
can be a failing engine oil pump
or worn main bearings giving low oil pressure to the whole engine
you could be burning oil from worn piston rings
or hardened valve stems

a mechanic can fit an oil pressure gauge to the motor when hot
to check running oil pressure to confirm low oil pressure

if engine is worn out

it is possible to fit a lower mileage used motor to your highlander
its often cheaper than and engine rebuild



Oct 13, 2016 | Toyota Cars & Trucks

1 Answer

I have a 97 Ford Taurus I put Marvel oil in it you have been driving for 30 minutes now it runs real real bad lost power overheating and smoking


Overheating is either a sign of a thermostat/radiator fault, a coolant leak or a leaking cylinder head gasket.

Smoking is either due to overfilling with oil, worn valve seals or worn piston rings/worn engine.

If the trouble started when you topped up with oil, drain the oil system and try a different oil.

Nov 07, 2015 | Ford Cars & Trucks

3 Answers

Engine is making oil

An engine does not make oil, but it can spill the oil that should be inside. You could have an oil leak, which means that oil will be leaking from either the front or the rear oil seal. The front oil seal is just behind the crank pulley, the one that drives the fan / alternator belt. If oil is leaking from there, suspect the front seal.
If you have oil leaking from the bell housing, that the the bell shaped metal thingy between the engine and the gearbox. you can suspect the rear oil seal.
If you inspect the engine and see oil leaking from the oil pan under the engine, you have a leaking pan gasket. This can usually be solved by tightening the pan bolts, a whole lot of bolts underneath the engine.
Finally, and this is probably the worst, if you see oil around the breather pipe that goes from the valve cover on top of the engine to the gas intake system, you have leaking compression, that means either the valve stem seals are leaking or the compression rings are finished, and you will have to have the engine overhauled, or at the very least have the cylinder head overhauled.
If the rings are suspect, you will also have excessive smoke out of the exhaust when you drive, especially when you accelerate. Check the exhaust for signs of wet oil.

Mar 18, 2015 | Cars & Trucks

1 Answer

Engin oil burnning

if its a 4 stroke engine then you have piston ring or valve seal or head gasket problem ! compression test 100 psi or more ! remove exhaust and pressure test piston and put some oil in exhaust port on valves with piston at top dead centre and look for bubbles and air leaking past valves , and listen for air passing into crank case which tells you if rings are leaking ( put oil on top of piston to cover the top ring the second time you test this to see if better seal on rings ) !

Feb 06, 2014 | 2004 Bajaj Caliber 115

2 Answers

What is wrong with my 2004 chevolet malibu, its leaking oil tremendously

If this has the v6, it's probably the intake manifold gaskets. This is a super common problem with these. You end getting oil in the cooling system and anti-freeze in the oil, they also leak externally when this happens. I would get it looked at/repaired asap or severe engine damage will result. I've had to replace quite a few over the years.

Dec 14, 2012 | 2004 Chevrolet Malibu

3 Answers

Oil leak 2000 alero, just replaced plug, not it, leaked out all the oil after I drove it 20 miles, please help, could it be a gasket or what

Check the oil filter. The old gasket might be stuck on the engine (two gaskets stuck together), or the new gasket might be defective, misaligned or missing.

Nov 05, 2011 | 2000 Oldsmobile Alero

2 Answers

Losing oil

is there an oil spot in your parking spot? If not, you are probably burning it.

Jan 08, 2011 | 1992 Toyota Pickup

1 Answer

What causes excessive oil usage in B&S engine?

The piston rings are going bad, or you have a leak some where.

Look for leaks by washing down the unit so you can see where the oil is coming from.
It may only leak when running, so you may have to run it until it warms up and then look for the leak. Most of the time i notice the dipstick tube o-ring is bad at the bottom of the tube. Replace the o-ring to stop that leak.

If its the piston rings, then your motor probably smokes while its running or when you really work the motor such as mowing thick high grass.
You spark plug will be oily and indicate to you that the rings are allowing oil to pass by.
To fix that, you have to freshen up the top end of the motor, with new rings and possibly new piston if the cylinder needs bored.

Check for leaks first, then pull the spark plug and see if its oily.

Dec 03, 2010 | Craftsman 42 in. Deck 19.5hp Lawn Tractor

1 Answer

My 2005 toyota avalon is leaking oil and smells like oil is burning. Will this expensive to repair and is this a common problem?

It really depends on where the oil is leaking from. Most of the time, engine vibration and constant bumpy rides could loosen bolts and nuts here and there causing parts to brush against each other. In areas like the Gearbox and the engine itself, there is a thin material known as a Gasket that seats in between some these parts to prevent lubricants [i.e.oil] from leaking. If this gasket wears out, you have an oil leak. However friction is rarely the cause of oil leaks. When a gasket serves its time [after years of heating and cooling, contaction and expansion] it simply needs changing. So you could check to see if really you have worn out gaskets or loose joints.
As for the smell of burning oil, that is probably due to worn out engine rings. Around every Piston are a series of rings that prevent lubricating oil from going into the combustion chambers. when they are worn out, some oil becomes part of the combustion process reducing your cars overall power and causing smoke.
As for Cost, you wont spend much to have the oil leaks checked, as for the rings, you'll probably spend a little bit more. Where I live all that never goes past $170

Jun 19, 2009 | Toyota Avalon Cars & Trucks

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