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Originally Posted by autozen
Jamie,
The mounts are filled with ethelene glycol (antifreeze) and they leak. You can measure the mount to see if it needs rplacing. The bottom edge of the metal on the mount should be no closer than 12 mm from the subframe. If you had clogged cats, you should have experienced a power loss. You can check for exhaust restrictions with a vacuum gauge. Hook it up to intake manifold vacuum and run the engine up to about 2000. The vacuum should drop off and immediately recover to above idle readings. If it is lower than idle reading, you have restricted exhaust or late valve timing.
Peter
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I have checked the exhaust, since I gutted the pre-cats and then cut the cat off cause I thought it was bad too. Then put the cat back on... All is good there now. I think the mootor mounts I got were just cheap ones and maybe a little more stiff than the factory. Like I said when in Reverse or Park the engine is not felt! But when in Drive it is. Not very much but I do not think that I should feel what the motor is doing when it is idling smooth and not jumping around at all. I have checked vacuum and it is steady in that state, as well as the tach on the dash and the tach signal from the X11 connector hooked up to a meter. Everything runs and shifts perfectly and smoothly, just at stoplights I can see the vibration in the passenger seat and feel it. I ordered a new mount, better safe than sorry and got one from a place I know rather than E-Bay. I will keep my E-Bay purchases to used items only now and not the new ones that seem to be of lesser quality than the ones I get from ***********************.
A side not on the clogged cats, yes I could not rev over 4000 rpm or drive over 60MPH due to the cats clogged. Cats clogged when the head gasket let loose! I did not even start the engine after I relaized I was getting oil in my coolant so the engine and head are fine and it never overheated, just sent burnt AF and Oil directly into the pre-cats. Stupid me when I broke them apart did not get all of the stuff out and thus had to cut the pipes at the cat to get the rest out. Don't anyone look under my car til I get everything brazed into place properly.... No leaks but she sure does look ugly under there with all the clamps.... 
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~Jamie
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2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.
1986 190E 2.3 Black, Auto, Mods to come soon.....
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