TBI Fuel Meter Body Questions

TBI Fuel Meter Body Questions

Postby Gone Blue [OP] » March 16th 2010, 4:00am

I am in the middle of replacing a leaking intake manifold gasket on my 98 AWD Astro. I just pulled the intake off and then removed the top of the intake manifold and removed the TBI Fuel Meter Body. I was wondering if you guys replaced the black o-ring fuel seals, spacer rings, and yellow fuel seals for the fuel pipes if you removed the fuel pipes from the intake manifold?

I bought a complete Fel-Pro Intake Manifold gasket set and thought I would do the whole thing. The Fle-Pro kit I bought (#MS 98002 T) dosent seem to come with these parts. The kit does however come with 4 o-rings that are each a different size that I dont have a clue were they go.

The GM service manual says that you should replace the fuel seals and spacers and I wondering what everyone else has done.

Also, how did you guys clean the TBI Fuel Meter Body? I am afraid that I am going to get some gunk in the openings were the fuel pipes go when I try and clean the unit.

Thanks, G.B.
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Re: TBI Fuel Meter Body Questions

Postby Astroplane » March 16th 2010, 4:50am

Is there a parts list with description on the Fel-Pro box?
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Re: TBI Fuel Meter Body Questions

Postby webcat » March 16th 2010, 5:17am

I ussually inspect them and if there not damaged i put a little vasoline on them and reinstall , however if you can get the part i would just replace with new ones
because that is'nt something i would want to skimp on because of a possible fire hazard plus they cant be that expensive.
Just saying if you reuse them make damn sure there in good shape , if there questionable at all trash em .
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Re: TBI Fuel Meter Body Questions

Postby Gone Blue [OP] » March 16th 2010, 5:23am

Astroplane wrote:Is there a parts list with description on the Fel-Pro box?


Yes, although it didnt help me much.....

2 - IntakeManifold
1 - Intake Manifold - Upper
2 - Valve Cover
6 - Valve Cover Grommets
1 - Distributor Mounting
1 - Throttle Body Mounting
1 - Fuel Meter Body
1 - Fuel Filter
1 - RTV Black - Tube
1 - O-ring
1 - O-ring
1 - O-ring

I assume the largest of the o-rings about the size of a quater is the fuel filter but I am not sure were it goes. Then as you can see above the other 3 o-rings are a complete guess by their description. I have attached a picture of what came in this kit and you can see the distributor gasket and the 4 o-rings in the top right corner of the picture below.


Thanks, G.B.
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Re: TBI Fuel Meter Body Questions

Postby webcat » March 16th 2010, 5:34am

them O rings in your kit might be for the brake booster vacuum connector on your intake manifold another one could be for your map sensor and the other could be for your purge solonoid thingy on the right side of your intake
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Re: TBI Fuel Meter Body Questions

Postby Astroplane » March 16th 2010, 5:37am

Since you still have it apart, I would call the dealer and replace them as webcat said. There might be some tech info or a phone number on FelPro's site.
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Re: TBI Fuel Meter Body Questions

Postby Gone Blue [OP] » March 16th 2010, 4:44pm

Thanks to all for your input. I went to see a friend that works in the parts department of my local Chevy dealer this morning to order a new EGR gasket and MAP sensor seal. I asked him about the TBI fuel meter parts and he told me that they dont typically replace them when they do an intake manifold. He talked me out of ordering them. I feel that they should be in good shape as there is no way to really damage them. The fuel pipe does not have an undercut or barb on them so they just pulled out cleanly. I hope I dont regret not replacing them. Although I think they are pretty easy to get at later if I need to.

webcat, I think you are right. I have been looking at my pile of parts I pulled off the intake and think the large o-ring goes on some sort of vacum booster cap that 1/4 turns into the upper intake. The EVAC canister purge solenoid looks like it might take one of the smaller o-rings and I think the last two might go on the fuel pipes at the flare nut joint.

I have to say that since my Astro is a second vehicle and I dont need to use it every day, this intake gasket project has been fun. I have been able to take my time and go thru it. Since I have it all apart, I decided to replace the water pump, thermosat, and all of the cooling hoses since I am sure they are original with a 100,000 miles on the van. This site has been a huge help and I appreciate everyones comments and info. Thanks again, G.B.
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