New to me truck

[StpaulF100]

Hello. The forum has been an asset getting my truck going. I just put the rebuilt carb on and it fired back up and wants to run amazing. I found I have a giant vacuum leak between the egr and the exaust manifold. I cannot find a gasket that goes between the two. Does anybody know if such a gasket exists or if I should just use a high temp spray gasket and call it good?  Thanks

[Gary Lewis]

Welcome to the forum!  Glad you joined.  

However, you missed the email we sent you approving your membership.  In that we asked that you go to the New Members Start Here folder, read the guidelines, and then post an intro thread there.  Why?  Because we keep our guidelines there and want you to have a chance to read them because we hold everyone to them.

So, have you read them?

And, where's home?  I ask because we have a map (Bullnose Forum/Member's Map in the menu) and we could add you if we had a state/city or zip.

As for the EGR, it sounds like you left the EGR plate off.  Yes?

[StpaulF100]

Gary-

I did read the guidelines. I Misunderstood the first post area. I have one I’m about to post. I am from St. Paul Minnesota. As far as the egr plate, everything is as it was stock, I have a leak below the plate between the manifold and the plate. I think it’s the intake not the exaust. 

Thanks 

Mike. 

On Mar 17, 2021, at 18:34, Gary Lewis [via Bullnose Enthusiasts Forum] <[hidden email]> wrote:

Welcome to the forum!  Glad you joined.  

However, you missed the email we sent you approving your membership.  In that we asked that you go to the New Members Start Here folder, read the guidelines, and then post an intro thread there.  Why?  Because we keep our guidelines there and want you to have a chance to read them because we hold everyone to them.

So, have you read them?

And, where's home?  I ask because we have a map (Bullnose Forum/Member's Map in the menu) and we could add you if we had a state/city or zip.

As for the EGR, it sounds like you left the EGR plate off.  Yes?

---

You have been tagged to come see this post.
View message @ http://forum.garysgaragemahal.com/New-to-me-truck-tp91522p91526.html
NAML

[ArdWrknTrk]

A gasket isn't expensive.
And even if the surfaces are badly corroded, it's nothing you can't fix with JB-Weld and a flat file.

[StpaulF100]

I’m not finding a gasket listed anywhere. Seems it’s another press fit without a gasket that Ford thought might last long enough. I didn’t have a leak there before rebuilding the carb, I didn’t want to crank the new carb gasket down until I new the rebuild went well. I’m going to try and loosen the egr tube on the exaust manifold and pull the plate and use a gasket sealer, the. Tighten and use lock or star washers.

[Gary Lewis]

No prob, glad you read the guidelines.  And you are now on the map.  

[ArdWrknTrk]

Let me ask. Why is there a vacuum leak at the exhaust manifold?

EGR shouldn't be active until fully warmed up, and under light throttle.

[ArdWrknTrk]

In the diagram here we see what looks like a flare (or reverse flare) fitting.




So, is your problem that the nut won't tighten?
Or that the fitting that threads into the manifold (387285 S) isn't tight?

The flare joint itself shouldn't have any kind of dressing on it.

[StpaulF100]

10B19902-792D-41F9-924D-472E1F83B4AF.jpeg




The leak is coming from where I circled in red. Could be I need to tighten the carb down more. I just went snug tight. I’ll get out there later and see if that works   A new carb gasket is way cheaper then all the egr stuff I’m probably goin to break during removal. I just wanted to make sure I wasn’t missing a gasket. Thanks for the diagram and the help.

[Gary Lewis]

You need to learn how to post pics on here.  There is info on that at Bullnose Forum/Forum FAQ's in the menu.  But here's the one you linked to:

[ArdWrknTrk]

Ok
So that is where the EGR spacer is sandwiched to the intake manifold.

There is certainly a gasket above and below the EGR spacer.


You can see it.
It's  #387295 S

[StpaulF100]

Thanks Jim.

I wasn’t too sure. I am having a hard time finding that gasket. A google search of that p/n has no results. I checked Napa yesterday and they don’t stock those parts on 1980. I’ll have to check Rock auto I think you can search p/n there.  I wonder if the gasket could be part of a set?  I have a full gasket set I’ll have to look in there, as I’m fairly certain there is nothing in the carb rebuild set. I soaked the egr tube in pb blaster last night. Hopefully everything turns smoothly. Worst case i make a gasket?

[1986F150Six]

I believe the gasket used under the EGR adapter for the 300 engine is the same as the one used between the EGR adapter and the carburetor.

https://shop.advanceautoparts.com/web/SearchResults?storeId=10151&catalogId=10051&langId=-1&searchTerm=Carburetor%20gasket&gclid=34d14a4e203815a99c312a1d57c9f9eb&gclsrc=3p.ds&msclkid=34d14a4e203815a99c312a1d57c9f9eb&utm_source=bing&utm_medium=cpc&utm_campaign=b_txt_brd_advance_core_gen_gen_all_rmktg_aap_us_ext&utm_term=advance%20auto%20parts&utm_content=Core%20Terms&isFitted=1

[StpaulF100]

That looks like the one. Spacer to manifold gasket. Thanks!!!  Now just have to get the egr tube off.

[StpaulF100]

It is fel pro 60359. Thanks for the help. Guess who broke the egr tube. Your right it was me. Picked up some pipe plugs and need to use the vise at work to get the pipe out of the egr plate. Now the struggle to Egr delete or not. Think I’m going to get the truck up and running and make that decision.

[StpaulF100]

Got the stuck fitting out of the egr flange. Purchased proper gasket. Now the conundrum of do I replace the intake gasket since everything is off or do I put this all back together and see if it fixes all my vacuum problems. I did the smoke test and didnt have any leaks below the carburetor but the last 3 intake exhaust  bolts were less then tight. I have snugged them up. In short I just want to enjoy my new truck for a bit before it shows it’s age again. Also advice/recommendations on any sealants or gasket dressing for intake or exhaust gasket replacement.

[ArdWrknTrk]

So, you are taking the manifolds off???
Better as a unit than trying to get them lined up individually.

These trucks came from the factory with no exhaust gasket, only graphite paste.
But the manifolds tend to warp from uneven heating because they are so long and skinny.

If you take them off check them for flat, and have them machined if needed.
I wouldn't recommend any sealants. But I do tend to soak the laminated exhaust gaskets in water prior to installation.
The steam generated when they first get heated creates steam that swells the gasket.

[StpaulF100]

Im not sure if their coming off or not. I’ve been lucky thus far no broken bolts or any and I don’t want to go down that path just yet. However I’m assuming the gaskets are 40 years old And will likely need replacement and everything is out of the way with the carb and egr spacer out. Common sense seems to do them now. I want to be impatient and drive my truck. I’ll mull it over this morning if the lower bolts move with out too much persuasion I’ll probably replace it.

Thanks for the tips.

[StpaulF100]

All 13 bolts came out without incident. Did the initial clean up of the motor and manifold surfaces. Had to pick up the little ones. Going to try and source some new bolts/studs tonight so tomorrow my 7 year old can help me reassemble everything. Any insights on bolts nuts studs washers is appreciated.

[Gary Lewis]

I think Jim uses stainless bolts.