Hi All!
Ethan just tested four MPS on a '74 2.0 we have here and it seems one holds pressure but it runs erratic.
We tested the three other MPS and they tested good. I know that even if an MPS tests good, old MPS's the diaphragm's often fail once pressed back into service.
Would the Tangerine MPS diaphragm kit help this, or is there something else likely going on?
Thanks Jeff, I see Chris' kit also has a couple of O-rings and a gasket.
I'll dig into it but I'll just order a kit.
Thanks
Mark...I have one that has failed electrically. There is always that possibility.
Mike
Thanks, yes I figured as much.
The one that's erratic is believed to be the original one on the car, numbers are correct so I'm hoping to repair it.
One of my good ones has a Tangerine kit in it and worst case I could use it, but it's part of a complete system I have.
I’ve rebuilt about a half dozen using Racer Chris’ kits. Very simple, you will need an induction meter to set up the basics with fine tuning done using an o2 meter.
Factory manual gives the values for the two coils resistance, if the coils are bad dump it. FYI 1.7 and 2.0 difference is a spacer ring in the 2.0. Also if you radius the edge of the ring the where it contacts diaphragm it will flex better and last much longer.
I had one that was partially cracked.
Would operate and run fine...and then not.
Had a similar prob. Rebuilt MPS and would run erratically. Put the old one back in that won't hold vac., runs good with a slight hiccup around 3k. Been driving it whenever the sun is out for a couple years now and no issues? Not sure what the prob w/ the rebuilt one was or remember what rebuild kit went into it.
@http://www.914world.com/bbs2/index.php?showuser=1608
Order kit (s)
Wait for arrival
Then open MPs
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