Fuel
10-02-2003, 08:03 AM
#14
Super Moderator
Join Date: Sep 2002
Location: Tallahassee, FL
Posts: 5,425
someone should have a writeup on the PD replacement, as it seems incredibly necessary
it's not difficult to do, and not expensive. Plan on replacing some vacuum hoses, have the correct gasket, and don't touch the oil metering lines unless you want to replace them.
When I replaced my PD, I ended up replacing all oil metering lines, replacing all vacuum hoses, adding pineapple inserts to my aux. port sleeves, changing all injector o-rings, and replacing the entire primary fuel rail. But all that isn't necessary. And I did that with no prior experience whatsoever, so that goes to show you that it's not that hard.
it's not difficult to do, and not expensive. Plan on replacing some vacuum hoses, have the correct gasket, and don't touch the oil metering lines unless you want to replace them.
When I replaced my PD, I ended up replacing all oil metering lines, replacing all vacuum hoses, adding pineapple inserts to my aux. port sleeves, changing all injector o-rings, and replacing the entire primary fuel rail. But all that isn't necessary. And I did that with no prior experience whatsoever, so that goes to show you that it's not that hard.
10-02-2003, 08:07 AM
#15
Senior Member
Thread Starter
Join Date: Sep 2003
Posts: 112
can you tell me briefly on how to change out the PD? i looked up the PD on mazdatrix, and they're asking $130 for it... what parts do i need to change it out...
looks like tomorrow i'm going to remove my upper intake manifold, so i can get a better look at my PD.
here's pretty much what i need as far as help:
necessary replacement parts
recomended replacement parts
what to do
and what not to do.
thanks a bunch
looks like tomorrow i'm going to remove my upper intake manifold, so i can get a better look at my PD.
here's pretty much what i need as far as help:
necessary replacement parts
recomended replacement parts
what to do
and what not to do.
thanks a bunch
10-02-2003, 09:13 AM
#16
Super Moderator
Join Date: Sep 2002
Location: Tallahassee, FL
Posts: 5,425
I think I bought my PD from Banzai, and I don't remember paying that much.
replacement parts:
the PD
gasket between upper intake manifold and lower intake manifold, and gasket sealant
recommended (inexpensive stuff, simple to replace, and can be bought at auto parts store):
injector o-rings (to ensure no fuel leaks there)
vacuum hoses (most likely the old ones are dry, brittle, and easily broken)
fuel hose, if any of your old fuel hose looks bad
Here's what I did:
(IF I HAVE ANYTHING WRONG, SOMEONE PLEASE CORRECT ME!!)
Look over the intake manifold, and get a good feel for what you're looking at, what you're going to remove, and what you have to disconnect to do it.
Depressurize the fuel system. To do so, find the electrical plug to the fuel pump. It is attached to the driver's side rear shock tower, under the carpet. Unplug it. Remove your gas cap. Start your car, and let it die. I think that's all there is to it, so gas won't spray when you remove your injectors or fuel hose.
Remove the intake hose and air filter. As I removed all the vacuum hoses, electrical connectors, etc., I labeled them. I didn't know what they were all for, so I just labeled them with numbers written on masking tape. Replace any vacuum lines that are old and brittle, or broken. Many of mine broke when I tried to remove them.
Remove the secondary fuel rail, which is right on top of your UIM. You don't have to disconnect the fuel lines for this, you can just kinda shove it out of the way. Your injectors should pull out with a twist. Label those, and set aside.
I believe there are 5 bolts holding the UIM to the LIM. On the driver's side of the intake manifold assembly, I believe there are 2 bolts, for a support bracket. I think there was a bolt holding onto the metal vacuum lines that run on the firewall side of the UIM, right near where the UIM meets the LIM. That one bolt pissed me off because it was kinda hidden. By now you should be able to lift the UIM/throttle body off the LIM.
Put some paper towels or rags in the LIM, so you don't end up dropping crap in the engine. Remove the old gasket from the UIM and/or LIM. Your PD and primary fuel rail should be easily accessible by now. Remove your primary fuel rail and injectors, being sure to label them (don't mix up your primaries and secondaries). My new PD was attached to a new fuel rail, so I'm not sure exactly how to remove it from your the original fuel rail.
Look in that messy area under the UIM that you removed. Replace any vacuum hoses that need to be replaced. DON'T TOUCH YOUR OIL METERING LINES IF YOU CAN HELP IT. Mine broke on contact, and they're not cheap to replace. But do inspect them, to be sure they're not leaking oil. Replace any fuel lines that need to be replaced. Replace your fuel injector o-rings.
Use your new gasket, with some gasket sealant. Replace everything, reverse of removal. Since you labelled everything, it should be simple to see if you left anything off. Check all vacuum hoses to be sure everything's in place. One loose vacuum hose can make your car run badly.
Once again, someone correct me if I'm wrong on anything. And sorry for the horrible attention to detail. I like thorough instructions, and I assume it helps other people as well.
replacement parts:
the PD
gasket between upper intake manifold and lower intake manifold, and gasket sealant
recommended (inexpensive stuff, simple to replace, and can be bought at auto parts store):
injector o-rings (to ensure no fuel leaks there)
vacuum hoses (most likely the old ones are dry, brittle, and easily broken)
fuel hose, if any of your old fuel hose looks bad
Here's what I did:
(IF I HAVE ANYTHING WRONG, SOMEONE PLEASE CORRECT ME!!)
Look over the intake manifold, and get a good feel for what you're looking at, what you're going to remove, and what you have to disconnect to do it.
Depressurize the fuel system. To do so, find the electrical plug to the fuel pump. It is attached to the driver's side rear shock tower, under the carpet. Unplug it. Remove your gas cap. Start your car, and let it die. I think that's all there is to it, so gas won't spray when you remove your injectors or fuel hose.
Remove the intake hose and air filter. As I removed all the vacuum hoses, electrical connectors, etc., I labeled them. I didn't know what they were all for, so I just labeled them with numbers written on masking tape. Replace any vacuum lines that are old and brittle, or broken. Many of mine broke when I tried to remove them.
Remove the secondary fuel rail, which is right on top of your UIM. You don't have to disconnect the fuel lines for this, you can just kinda shove it out of the way. Your injectors should pull out with a twist. Label those, and set aside.
I believe there are 5 bolts holding the UIM to the LIM. On the driver's side of the intake manifold assembly, I believe there are 2 bolts, for a support bracket. I think there was a bolt holding onto the metal vacuum lines that run on the firewall side of the UIM, right near where the UIM meets the LIM. That one bolt pissed me off because it was kinda hidden. By now you should be able to lift the UIM/throttle body off the LIM.
Put some paper towels or rags in the LIM, so you don't end up dropping crap in the engine. Remove the old gasket from the UIM and/or LIM. Your PD and primary fuel rail should be easily accessible by now. Remove your primary fuel rail and injectors, being sure to label them (don't mix up your primaries and secondaries). My new PD was attached to a new fuel rail, so I'm not sure exactly how to remove it from your the original fuel rail.
Look in that messy area under the UIM that you removed. Replace any vacuum hoses that need to be replaced. DON'T TOUCH YOUR OIL METERING LINES IF YOU CAN HELP IT. Mine broke on contact, and they're not cheap to replace. But do inspect them, to be sure they're not leaking oil. Replace any fuel lines that need to be replaced. Replace your fuel injector o-rings.
Use your new gasket, with some gasket sealant. Replace everything, reverse of removal. Since you labelled everything, it should be simple to see if you left anything off. Check all vacuum hoses to be sure everything's in place. One loose vacuum hose can make your car run badly.
Once again, someone correct me if I'm wrong on anything. And sorry for the horrible attention to detail. I like thorough instructions, and I assume it helps other people as well.
10-02-2003, 10:38 AM
#20
Super Moderator
Join Date: Sep 2002
Location: Tallahassee, FL
Posts: 5,425
Originally Posted by Rotorn00b' date='Oct 2 2003, 11:20 AM
i agree on the pin, maybe write one up for the FAQ section????