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Autos - Cars > Ford > 1978 f250 picku...
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1978 f250 pickup with 390 engine... vacuum diagram?

by aiiadict@[EMAIL PROTECTED] Feb 18, 2008 at 09:05 AM

Hi,

It looks like someone put vacuum lines on this engine incorrectly.

There are the two temp operated vacuum switches in the water
flange on top of the engine.
distributor vacuum advance (no retard)
charcoal canister,
EGR
breather
valve cover vacuum
****ts on intake (a bunch of them)

looking in the crappy chiltons manual, it shows the dist., with
a line coming off it, going to a T, then to the carb and to one of
the temp switches...  this is definitely not the way it goes right
now.

it goes dist-->temp switch.  from temp switch it branches to two
****ts on the carb.

I would like a good description of the vacuum system.

right now the EGR isn't hooked up.  the breathers on the valve
covers aren't connected.

It will start, sounds pretty good.  It dies about 2 seconds after
keeping it revved a bit...  it won't stay lit.

I'll take a picture with my digital camera and post it on a website,
and repost here to see if anyone can help.

two barrel carb...  pics are a thousand words so I'll stop typing
and start getting snapshots

any assistance is appreciated!

Rich
 




 7 Posts in Topic:
1978 f250 pickup with 390 engine... vacuum diagram?
aiiadict@[EMAIL PROTECTED  2008-02-18 09:05:46 
Re: 1978 f250 pickup with 390 engine... vacuum diagram?
Kevin <kevyNOSPAM@[EMA  2008-02-19 02:59:02 
Re: 1978 f250 pickup with 390 engine... vacuum diagram?
aiiadict@[EMAIL PROTECTED  2008-02-21 12:54:45 
Re: 1978 f250 pickup with 390 engine... vacuum diagram?
Kevin <kevyNOSPAM@[EMA  2008-02-22 02:38:16 
Re: 1978 f250 pickup with 390 engine... vacuum diagram?
aiiadict@[EMAIL PROTECTED  2008-03-14 09:01:53 
Re: 1978 f250 pickup with 390 engine... vacuum diagram?
"ScottM" <no  2008-03-14 10:53:07 
Re: 1978 f250 pickup with 390 engine... vacuum diagram?
aiiadict@[EMAIL PROTECTED  2008-03-19 14:00:11 

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tan12V112 Sat Oct 11 4:23:48 CDT 2008.