When i turn the car on the car makes a lound clunking sound kinda like what you hear if you put a marble in a plastic jug and shook it. It also does it when im shifting some times. It shakes like your about to stall out(but it doesnt) sometimes when you turn it on or you start off from a stop. Is this my front end mount or my engine mount or something else?
If i hit a bump while driving it makes that marble in plastic jar sound.

Also how hard are they to replace?

Thank you for the help.

 

Well considering how old your car is it's safe to say yes they are worn out good. Note,...That a poor idle can make the engine buck and kick alittle as well at low rpm aka starting from a stop and idleing.

To replace the mounts youll need a engine hoist and a friend preferably and about 3-4 hours if its your first time.

 

but its sooo worth it

 

Do i need to actully unhook the engine from the car or just use the hoist to keep it from falling?

 

aside from your engine mounts have you looked at you Catalytic Covertor? My RX started the same noise last thursday and thought it was the engine/tranny mounts. Upon further investigation it was the Cat. just a thought

 

a pry bar can help too. definitely watch your fingers... though they would add some extra padding hehe.

 

see if your transmission mount is intact also ??

when i drove with out the bottom mount bolted on while going over the bumpy interstate, it was boncing up and down like crazy, which kind of sounds like a marble in a can.....

 

ill check them out tommarow. I dont have a engine hoist so this should be interesting.

 

Assuming its the mount. Do i have to use RX7 mounts or can i use some from a diffrent kinda car? Incase i have trouble finding some.

 

just use a jack and lift by the transmission. its not to bad...

 

or use a block of wood under the oil pan and a jack .. also works as well ... says it right in the haynes teardown and rewbuild manuel ... but yes .. have a friend present

 

^^^^^ Wouldnt that push the bottom of the oil pan into the oil sump filter?

 

installing motor mounts?

Unbolt the two nuts on each motor mount.

Jack up car, yada yada jack stands

put wood block on jack, hack transmission from bell hosing. About an 2 inches and you can remove the old motor mounts and install new ones.

My install time: 20 minutes from jacking to jacking

 

^^ yeah. i had my motor mounts out in a jiffy, really dont need another person but if your new to this id recommend a helping hand. i always need help. lol!

 

Does it make the noise as it's turning over, or only after it starts? If it makes the noise while your cranking it over it's most likely one of the thrust bearings.

Brent

 

Here are "how-to's" for motor mount inspection and installation. They are instructions for installation of our poly mounts but the stock mounts go in the same way. http://www.banzairacing.net/how_to_home.htm