can you name this part or parts
#1
can you name this part or parts
Here is a picture of the parts the two canaster type things. seem to be making a hissing sound when i shut off the motor. Wondering what these are and if that is normal to hear. it is a 5.8l 89 Coming from around that area. Their is also a silver one just behind them you can kinda see. any help woulld be great. truck is idling rough.
#6
The silver "thing" is part of the exhaust recirc system (emissions). A lot of times the steel portions of the system rust out, and develop leaks. Wait till the tubing on the back of the heads rust out, that is a treat. It may also be that the clamps that hold the tubing together have broken, try putting a hose clamp on them, if the steel portion is not broken, it might seal back up.
#7
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#8
Just a hissing sound is a minor leak, if it were to sound like a true exhaust leak, then I would look into that as a cause of your idle problem. But if it just a hissing then probably not. But, if what you are hearing is vacuum leaking and not the emissions tubing, then that could be a problem. Finding vacuum leaks can be tough, try using some carb cleaner on your vacuum lines that are in the area of the hissing sound, if there is a vacuum leak, then the carb cleaner will get sucked into the system and make the engine surge for a moment and then idle back down. Vacuum will continue to hiss for a few moments after the engine is shut off, I have never personally heard exhaust continue to leak after the engine quits running.
#9
yeah that is what gets me. Well I was at napa and wanted to get some rubber hose to replace the stock vinyl lines but the guy their said they almost never leak just were they join the rubber footings. So he told me to use seal all instead never heard of that but I guess I will give it a try. Used a a propane drip torch around the plenum and nothing so I guess that is a good thing.
#10