Look no further than my brand-new detailed picture guide

http://fonglingling.tripod.com/zenkifc3s/index.html
- under mods

It's real rough, just finished it, but I'm too proud of it, can't keep it to myself.

 

nice writeup.


"About when you get it this far up, it'll stop going. You can feel how it's something kinda bendy holding it. That's the vacuum hose. Very short little bugger. Probably very stuck if it's your first time removing the UIM. If it's really stuck, you might have to slice it off and buy a replacement hose. The clamp is almost impossible to get off since there's no room to work down there. People usually replace them with screw thingies. "

this is actually a coolant hose and kind of tough to find outside of mazdatrix and a dealer so i would try to save it if possible, it is good to replace the spring clamps with hose clamps since it also makes it tons easier to remove it in that tough spot with a 1/4" socket, 1/4" screwdriver driver and a 1/4" wobbly for the socket. just some suggestions since i have had my UIM off about 2 dozen times that may make it easier to do and undo.

 

nice write up, we fellow rx7 owners appreciate these kind of write ups.. i was going to take mine off but didn't have enough time..

 

If and when you do take it off be prepared to see a lot of weird looking dirt. When i took mine off i found sand......SAND!!! Where the HELL did the previous owner drive my car?

 

Finally someone else who realises this. The way some people carry one around here you'd think it was impossible.

 

this is just personal..
but..
if youre the kind of person who really really has to look at directions besides a quick glance at the FSM to do this.. should you really be working on your car by yourself?

 

I personally don't find the stock spring clamps that difficult to use, but I don't really like to use worm-gear clamps or fuel-injection clamps. I always find they cut into the hose, and frequent under 8000rpm+ use (read: racing), they vibrate loose without some aid in locking the threads.
The Mazda spring-type clamps work great, but I don't thinks its a good idea to reuse them. They're pretty cheap from the dealer anyway.

 

in some places the spring clamps are ok to use but in tight areas like the one mentioned i would hate to struggle with one.

 

afraid to get your hands dirty pretty boy?

 

I've never had a single problem with a screw clamp. Not one. Ever. I have seen people overtighten them and cut into the hose though...

In this case the point is to make the job much easier. Getting a pair of pliars (and your hand) under the UIM to undo a squeeze clamp on that coolant hose is very difficult. Using a long screwdriver or small socket to undo a screw clamp is very easy. After several R&R's my hose is still in good condition and has never leaked.