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Re: heater valve in hose fitting
Try autozone.com to see if they have your car listed for diagrams pictures and step by step instructions if your car is not listed then try your local library they have all the car manuals and even copy them for you and also try Schram auto and truck parts 1-800-292-1032 they sell only GM parts and here is one for a salvage yard junkyarddog.com
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Depends on car. If you are doing this with the head removed from engine most will press into place with your finger. Some valves have such sharp ridges for the locks that a plastic sleeve is provided with the new seals to use on the tip of the valves when reinstalling them. With head on the engine, yes a special tool is used to put air pressure on cylinder to hold valve closed. Then another tool compresses valve spring so you can remove spring to access seal.
sounds like the injector sleeve O rings have failed this was common.
if you put a clear plastic piece of hose on supply line for diesel fuel filter to head fitting at front and fuel is not black but normal diesel colour thats good.
then put clear hose on return line fitting at rear of cylinder head and fuel is now darker, engine oil is by passing injector sleeve top O rings and entering into fuel gallery in head.
rocker cover, injector rail, injectors need removing and injector sleeves need replacing as well as O rings and seats.
a special tool is needed to remove the injector sleeves out of the head. you will also need to drain the cooling system before removing the injector sleeves, so coolant is also needed.
dealers have special tool for injector sleeves
If it's a heater hose, it will go to the firewall behind engine, where it connects to the heater core's fitting that juts out from firewall. Hose goes over that fitting. Heater hoses are fairly easy to replace, maybe not so easy on yours, due to lack of space. Drain the coolant before taking off hose, loosen clamps on it, then start pulling it off. Watch for a hose holding bracket that also needs to be removed before hose is completely free. Some do, some don't have such a bracket. Hire a neighborhood kid that works on cars to replace it, as sometimes that hose to heater core fitting can get stuck on tight, and if one starts yanking or pulling on it, you can break the fitting and will then need a new heater core-big expense to replace. Good luck and merry christmas in capital letters, lol.
these two hoses are called the EGR backpressure transducer hoses and need to be replaced with the same type to reduce the risk of fire also you may need a new sensor as some of the newer ones are plastic and melt with the hoses have a back pressure test done on the catalytic converter to make sure you dont have excessive exhaust burning these hoses also there is a small check valve or orifice in the metal tube assembly that the hoses connect to that could be faulty and caused the hoses to melt
Remove the firewall rubber grommet to the broken pipe in the firewall. Clean the remaining end of the broken pipe real good, apply a drop of oil on it, then push the heater hose back in and tighten the hose clamp back on. You will need a 12 point box end wrench and it will be slow due to limited access. It should work.
system have either an expansion valve or an orifice tube
is front condenssor dirty or plugged up (wash with garden hose pressure)
is blend door working. is there any cabine filter in system air plenum may need replacing
is the charged proper to much worst then to little freon
Sounds like a typical case of stuck hose to me. Sometimes it helps, if you are replacing the hose, to **** it with a razor blade and peel it off with a screwdriver....welcome to the world of auto repair.
is sounds like the heater core is clogged up. you can remove the heater hoses, not from the heater core ( the core fittings can be delicate) but from the other ends on the engine and flush it backwards( colder hose) to blow the gunk out, use low pressure air or low pressure water.
There is a potential downside to this, the gunk may be plugging up a leak. take out the gunk and you might have a leak. Also if you over pressurize you may spring a leak. But on the otherhand if you were going to replace the heater core any ways you got nothing to lose. By the way if you do damage the heater core just loop one of the hoses back to the engine fitting. this will keep you on the road until a proper repair can be made. watch out for gunk spraying out of the hose or wear a raincoat and goggles!
You need to buy the fittings first they are sold by a company called HELP motormite. Very common to go bad. You will need to buy or borrow springlock tool. Are sold seperately or in a set. What they are is a garter spring that will disconnect quick connector on fittings. The parts store will have them too.