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Intake valve is sticking open tried taking head off and wd40 on it twisted it around alot but still doesn't always close. what to do about it?

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My throttle is very hard to twist and doesn`t return back. I`ve used lube on it and the spring looks good. This is just a switch no cable so whats making it so hard to twist, cheap construction? Would...


Aug 12, 2011 | Tomos Sprint Motorcycles


Leaking shut off valve and hard to close shut off valve.

Shut off valves and gate valves have a packing nut.

When you close the valve to do some maintence on your plumbing system, and reopen the valve, alot of the time you will get a small leak from that nut. Use a crescent wrench to tighten the nut clockwise slowly, if you tighten to much you won't be able to turn handle.

Which comes to, hard to turn valves. First try to loosen nut a little bit, and then try to turn valve off. Shut off valves tend to sieze up after awhile. Always know where to locate your main water shut off. Just in case you break something or even if a pipe freezes in the winter. If you can't turn valve by hand, place channel locks around handle of vavle. Re careful not to twist and snap handle off. If you are not sure, call your plumber.

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on Jul 07, 2010 | Plumbing

1 Answer

Obd 2 code reads p 15 18. There is no code number to relate to the problem. Do you have the answer? [ check engine light on 1999 ford taurus]

code p1518= intake manifold runner control (IMRC) malfunction (stuck open)

the intake manifold has two runners per cylinder, feeding each of the cylinder heads
the IMRC assemblies are located between the intake manifold and two air passages for each cylinder.
one air passage is always open and the other passage switches from means of a valve plate.
below 3000 rpm, this valve plate is closed to improve low speed performance.
above 3000 rpm, this valve plate opens to improve high-speed exceleration.
the valve plates are opened and closed by the IMRC deactivation by the powertrain control module
(pcm) if your car or truck is not affected by the error code, the pcm may need to be reprogrammed
so that the error does not come up again. or you can connect an obd2 scanner and reset ever y time
it comes up. good luck!

Feb 10, 2011 | 1999 Ford Taurus

1 Answer

New carb,new gasket,rough idle. No apparent vacuum leaks

Rough idle can be caused by carboned or burnt valves. Start the engine and let it warm up. Take a spray bottle with water, Rev the engine up and spray water into the carb do this 2 or 3 times this will clean the carbon off the valves and pistons. If this helps, but doesn't solve the problem, then It's time for a head job. One other thing to do to check for vacuum leaks is to spray WD40 Around vacuum ports and the intake manifold/gaskets. When spraying and the engine clears up, theres your vacuum leak. Don't use starting fluid as you would be asking for trouble. WD40 is flamable, but not as flamable as starting fluid.

Feb 04, 2011 | 1985 GMC Jimmy

1 Answer

My 1990 Honda civic trunk wont close. The latch opens when I turn the key, but does not spring back when I take the key out, therefor causing my trunk not to close...Any Ideas?

Its probably a buildup of lubricant and dust that is making the latch stick and bind.Get some rags and put them around the latch.Get some wd40 and give it a really good spray.The wd40 will help to loosen the dirt etc.Leave it for 10mins and do it again.A toothbrush will help free up the dirt and the latch should work.I hope this helps

Mar 25, 2010 | 1990 Honda Civic

3 Answers

The door ajar light is always on but the doors are closed sometimes it shuts off i cant figure out what door it is

The door switches are built into the door latches on the Expedition. This makes the problem hard to isolate without taking the doors apart. Try spraying some WD40 into the door latches and opening and closing each door several times. Usually this will free up the sticking switch. My experience is that most of the time the drivers door switch is at fault.

Feb 04, 2010 | 1998 Ford Expedition

2 Answers

2000 nissan sentra runs well on warm up, stalls in

Try to clean the throttle plate with a tooth brush and B-12 chemtool (parts store will have). Engine off / remove air inlet duct, open throttle, spray a little and clean thoroughly.

Nov 20, 2009 | 2000 Nissan Sentra

1 Answer

I have an 2002 Jeep Liberty that keeps throwing rocker arms. Has anyone else had this problem? We have replaced lifters, rocker arms and valve springs any ideas? This always happens on cold start up

yeah it needs a new cylinder I see this all the time. The valve stem guide in the head drops and sticks the valve open the rocker and cam lose tension and thats why the rocker keeps breaking. Take the valve cover off the head that your have problems with. remove the rocker put a socket over the valve spring. gently tap the spring down without loosening the keepers. You will notice that the valve will not return to the closed position. I garuntee this is the problem u r have I hate to give u the bad news.

Nov 05, 2009 | 2002 Jeep Liberty

1 Answer

15 HP OHV Kohler engine with no compression

Have you checked for a bad head gasket?

Check the intake valve springs or the intake valve shafts to be sure they aren't stuck open. Another cause could be excessive carbon build up on the intake valve causing them to not seal.

If you've gone this far, you could try a compression leak down test. If you still have the push rods out, you can use or get an adapter that will allow you to pressurize the cylinder(s) with air by removing the spark plug. Apply 70-80 psi air directly to the cylinder (the cylinder may go to BDC (bottom dead center) but if you don't have any push rods, the valves can't open.

Listen carefully - if you hear air leaking out of the carb, it's a bad intake valve. If you hear air from the exhaust, it's an exhaust valve. If you hear air from the crankcase breather, it's piston rings.

May 03, 2009 | Kohler CH25 PA-CH730-0040 Command Gasoline...

1 Answer

Makita AF503 Brad Nailer won't fire nail

Take head off of tool. Clean and lube orings on the head valve . Do not use wd40 use air nailer oil.

Apr 11, 2009 | Makita AF503 2'' 18 - Gauge Brad Nailer

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