Here is a thread discussing how gasoline was filtered before the inlet filter in the tank was used -

https://www.ford-trucks.com/forums/1566233-fuel-pump-questions.html

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KultulZ and Sandbird,
The computer box I mentioned was not a computer at all. It takes the place of the engine's ignition system for emergency road breakdowns. We tried this on sunday but the truck started to cross fire and sputter so we unhooked.

There is no PCV system on the engine, just a breather cap and hose on back of manifold.

Where is the hole in the manifold your see? There is one in the picture inside the rear carb location which goes to a port (14" vacuum) that is capped with a white cap.

The distributor vacuum advance is hooked up to the rear carb port. This port has no vacuum at 1000rpm idle but as you accelerate it does jump up (vacuum Gage). I was told this normal.

I did try to test drive with tach disconnected and engine still stalled.

Other things I tried were: Hooked up a pressure gage on fuel line before carbs and it held 7 lbs. the whole time driving and stalling.

Tried setting idle up to 1200 rpm. Still stalled.

Replaced intake manifold gaskets because #1 cylinder is running about 150F hotter than #2. We thought there was a leak causing this but still stalled and temperature difference remains.

Thanks for all your help! I'm not sure what to check next.

Joe D






Joe D (The Frig)
1960 F-100 - 292 Y-Block
Philly Burbs

Where does the hose on the back of the manifold go?


Lawrenceville, GA

The hole seems to be the one you speak of with the white cap. To add some credibility to my concern I own  a '57 E Bird and factoring in old age idiocy I walked out to my garage and rechecked the manifold. The factory did not put a hole in the back of the manifold. I am also curious where the hose that Charlie asked about goes to. The teapots had a port in their bases to access manifold vacuum which was used for power brakes and input to the fuel pump vacuum booster.  I had a similar problem with high idle and that was when I discovered they used larger clam shell washers on E manifolds that took a bigger bite of the aluminum flanges. I don't recall if you told what the initial timing is. I know it would be a band aid but a dash pot installed on one of your carbs might make your truck more driveable until you find the answer.

“There is no PCV system on the engine, just a breather cap and hose on back of manifold“

As Charlie asked, where does the hose go. If you’ve got a hose on the back of the manifold, not the road draft connection in the valley pan, you’ve got a pretty good vacumn leak. Engine warms up, choke goes off, you're way lean. I’ve been following this, but didn’t have anything to offer until I saw that post, if it was covered earlier, my apologies.

miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ

The hole in the manifold (rear carb location) has a fitting that is capped with a whit cap. This is where I tested for vacuum and it showed 14" of vac at 1000 RPM.
The distributor vacuum advance is hooked up to the rear carb port (down low on body of carb).

There is a vent hose on the back of the valley pan that runs down to the cross member to keep it lubricated!! No PCV valve.

After hearing about how a dash pot works I agree that it would prevent the stalling because I can keep the engine running most of the time by keeping trans in gear or keeping foot on accelerator however a extra foot would be nice!

Thanks for your help!

Joe D

Joe D (The Frig)
1960 F-100 - 292 Y-Block
Philly Burbs

Joe D (The Frig)
1960 F-100 - 292 Y-Block
Philly Burbs

I replaced the intake manifold gaskets the other day because of the temp difference between number one cylinder and the others. We though a leak was causing a lean condition inside cylinder driving temp up.
Did not solve stalling issue!
Does anyone live near Philly and make house calls? LOL

Joe D

Joe D (The Frig)
1960 F-100 - 292 Y-Block
Philly Burbs

The temperatures do indicate a problem.  They don't necessarily mean much for your current issue unless the temperatures were known before the stalling started to happen.

A common issue has been the high idle.  Getting that fixed might make this stalling issue easier to fix.  It could even be the problem and just was not bad enough until recently.

For clarification, the hose on the back of the manifold is actually the hose on the back of the valley pan?


Lawrenceville, GA

Thanks Charlie, I agree!
The manifold port in the picture on page 10  is capped with a white cap. No Hose.

Valley pan (crankcase vent) is connected to a hose that I ran down the the frame some years ago.

Thanks for your help!

Joe D (The Frig)

Joe D (The Frig)
1960 F-100 - 292 Y-Block
Philly Burbs