Just took off plenum and have a few questions

Started by 350TPI, May 07, 2007, 06:08:28 PM

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350TPI

I am upgrading the turbo and injectors and was wondering what all should i change while this is off.I am already going to change the plenum and throttle body gaskets along with the valve cover gaskets.How hard is the rear VCG to replace?Should i replace the FPR while i am in there?Also,i took out the 4 bolts that hold down the fuel rails and disconnected the fuel lines that run to the rail and it still wont budge.What am i missing?Also i am going to replace the injector o rings.I have oil all over the back of the engine from a long time leak that the prev owner didnt address.Is there any other gasket besides the VCGs that would cause this?Sorry for all of these questions but i need to know this before i put it all back together.Thanks,chris.

sleeperred90tgp

Sure is, the oil pump drive o ring is the biggest culprit for oil leaks on these motors.

Your fuel rails are just stuck in there from age and crap around the bottom of the injectors. Blow out the crap before prying the rails off.


Jud
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pontiac6ksteawd

Get yourself a vacume line set too. Those things are always breaking.. PCV Valve, Clean out the EGR passages, rebuild the crossover, oil return lines. If your AC doesnt work, this would be a good time to replace the orifice, and drier tank.

Anything else I am missing here guys?
Brian - Carpe Diem

I dont have to love my president, or any god, to love my country!!
More people have died in the name of "God" than in all wars combined thruout history..
01 Pontiac Aztek GT 123k - 04 GMC Envoy XUV SLT V8 99k - 05 Mercury Montego Premier AWD 52k

350TPI

What is the part number for the black piece that goes on the back of the TB that has the 5 vacuum lines?I really need one of those.

sleeperred90tgp

Don't think the dealer has them anymore, although they do have the vacuum lines in kit form.

I think Jeff M bought a few of rubbe blocks awhile back, you might try to contact him.

Jud
Quickest TGP on this planet.

:cheers:FASTEST TGP AWARD given By TGPforums!:cheers:

            Congratulations JUD! Keep an eye on your rear-view mirror for TGPilot

grinders_18

BTW it's four vacuum lines, just to clarify. And I would suggest going to your local junkyard...may yield good results!

This radio station was renamed Krenzy in honor of the last American hero to whom speed means freedom of the soul. The question is not when he's gonna stop, but who is gonna stop him.

R Dubya

Oooh ooh I have a couple of those vaccum blocks sitting in my basement, and they are still available from the dealer.  The part number is somewhere on this site, but let me run and get the box I will post it.  Hold on, BRB.

10114903

EGR harness, but its the vacuum block that goes into the top of the throttle body.  I think they are around $30 list.  I'd be willing to let one of mine go as I won't be needing 2.  I can take pics if you want/are interested.

Ryan Warren
'89 TGP
It doesn't run anymore.

TGP Nick

Nick
1989 Pontiac Turbo Grand Prix- LG5 - 4T60HD
2008 Ford Ranger XLT- 2.3 DOHC I-4 - 5MT
2012 Nissan Altima SR coupe- 3.5 V6 - 6MT

R Dubya

yup, I think Chris is buying one in the next week or so.  I still have one more, I might be willing to part with it.
Ryan Warren
'89 TGP
It doesn't run anymore.

350TPI

Sorry nick but i will definitely be buying it.Another quick question about the stupid fuel rail.I went home yesterday and was prying it up with a screwdriver and heard a strange noise.Next thing i know fuel is running out of the rail onto the lower intake.Looks like when i was prying and injector either broke off or dislodged from the fuel rail.Is there a better way to do this?After that happened i just soaked up the gas and was done for the night.

Dark Ride

Damn, your injectors must really be stuck in there.  Usually the rail and the injectors come off as one unit.  If fuel started running down into the intake then one of the injectors must have come out of the fuel rail.  I would try pull the clips that hold the injectors on off, trying to get the fuel rail off, and then pull the injectors individually.  You'll definetly want to put new O-rings on your injectors once you get them off.
-Mitch Reed
1998 Pontiac Grand Prix Supercharged
Some Modifications
1990 Turbo Grand Prix
Restoration In Progress
Quote from: grinders_18 on July 24, 2007, 07:31:07 PM
Yeah, I just couldn't figure out a way to work in the one member who claimed that adding a valance to his lightbulb kept it from overheating...

R Dubya

You obviously removed the 4 bolts that hold the rail to the LIM right?  If you did than yes they must really be stuck but the will come out.  Try prying the rail from all 4 corners to wiggle it loose a bit, dont give steady pressure but a little bounce with the bar you are using to pry.  It sounds like you may certainly have damaged one of the injectors.  Good luck getting them out!

Have you already purchased replacements?
Ryan Warren
'89 TGP
It doesn't run anymore.

350TPI

Yes,all 4 bolts that hold it down are out.Luckily,i am putting in new injectors anyway.Like always with this car,every time i touch it something breaks.I have owned fords that were less of a PITA than this car :icon_mrgreen:.She better be glad i still love her or else after its fixed i would sell her.