Pulling UIM for Injectors - Other "While You're In There" Tasks?
#1
Pulling UIM for Injectors - Other "While You're In There" Tasks?
I'm going to be pulling my UIM soon to remove my fuel injectors and send them out for cleaning. While it's apart I'm also thinking of doing the fuel pulsation damper because I'm not sure if/when it was last done. What other stuff should I consider doing while the manifold is off? My FD is a 1993 with about 112k, only 7k on a factory reman with new hoses, vac lines, etc. Stock twins with no plans to change.
#6
Senior Member
I guess there might be calibration issues though
Last edited by Marf; 10-04-16 at 06:28 AM.
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#8
Urban Combat Vet
iTrader: (16)
*Inspect/replace coil harness.
*inspect/replace injector pigtails.
*consider replacing stock fan thermoswitch with a S5 FC switch (you'll also have to pull the alternator but not a big deal).
*Relocate and install fast reacting IAT sensor. You can use the old sensor as a plug.
*inspect/replace injector pigtails.
*consider replacing stock fan thermoswitch with a S5 FC switch (you'll also have to pull the alternator but not a big deal).
*Relocate and install fast reacting IAT sensor. You can use the old sensor as a plug.
Last edited by Sgtblue; 10-05-16 at 10:15 AM.
#10
Eats, Sleeps, Dreams Rotary
Are the OMP hoses dark yellow or orange? Then they will probably snap at the slightest touch. Buy some Teflon hoses and crimp fittings in advance of working under the UIM...
#12
#13
Eats, Sleeps, Dreams Rotary
#15
Replace all the check valves with Dale's Viton check valves.
Replace the stock UIM IAT sensor with the fast acting IAT- I did this on my stock ECU car and there was a noticeable smoothness.
Clean the inside of the UIM out with degreaser or similar- now is a good time.
Install a catch can/updated PCV system.
Replace the stock UIM IAT sensor with the fast acting IAT- I did this on my stock ECU car and there was a noticeable smoothness.
Clean the inside of the UIM out with degreaser or similar- now is a good time.
Install a catch can/updated PCV system.
#16
Hmm. Maybe more advanced than what you are looking for, but. . .get hold of one of the aftermarket solenoid racks and relocate the more reliable solenoids to the passenger side where they will be easy to access in the future and will be exposed to far less heat.
#17
#20
Senior Member
iTrader: (11)
Everybody has mentioned everything I would have.
1. OMP lines (become brittle from heat)
2. check that the check valves are working
3. replace all vacuum hoses with silicone hoses
4. electrically check that the solenoids are working
5. check all your wiring and connectors
6. check your ignition wiring harness
1. OMP lines (become brittle from heat)
2. check that the check valves are working
3. replace all vacuum hoses with silicone hoses
4. electrically check that the solenoids are working
5. check all your wiring and connectors
6. check your ignition wiring harness
#21
Thanks all for the feedback, FINALLY getting ready to do this after a few months of other projects. I sent an email to Dale about Viton check valves, will order some silicone vacuum line, have a new FPD on order, and will send the injectors out when the UIM is off. Where can I look at the aftermarket solenoids/rack and aftermarket fast-acting IAT that will work with my stock ECU?
#22
RX-7 Bad Ass
iTrader: (55)
IMHO the aftermarket solenoids aren't worth it. Stock solenoids aren't that much of a problem, they're plentiful used (you can get ones from an FC as well), and the biggest problem is usually just breaking a nipple off. The aftermarket solenoids I've seen just look like a big wad and I don't think they really make anything better.
On the IAT sensor, Google around, I think Banzai Racing or someone was selling them. Haven't shopped for one in years.
Dale
On the IAT sensor, Google around, I think Banzai Racing or someone was selling them. Haven't shopped for one in years.
Dale
#24
So I maybe got a little carried away.....
The to do list so far is clean and flow check injectors, all new vac lines, check solenoids, new battery tray, new coolant hoses, new belts, clean intercooler, FD thermoswitch, new temperature sensors, fast acting IAT, Dale's viton check valves, new FPD, check the OMP and lines, check the cooling fans (suspect one is dead), flush the coolant, replace the battery tray, and clean the crap out of everything. While I'm in this deep, what else should I be checking or replacing?