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need help on Motorcraft 740 carburetor

 
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fgin

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Since: Apr 23, 2005
Posts: 6



(Msg. 1) Posted: Fri Feb 24, 2006 1:18 pm
Post subject: need help on Motorcraft 740 carburetor
Archived from groups: alt>autos>ford (more info?)

I need advice on Ford Motorcraft 740 carburetor for 1984 Ford Escort
1.6 L 2 barrel loosing vacuum on carburetor. So rpm is at 1250 rpm
due to vacuum leak. I used carburetor cleaner to race vacuum leak and
found it was leaking from the choke housing. Inspection of choke
housing shows it is loose. Choke is not working at cold start. It
appears lost one screw inside the housing. I found a matching screw
*8-UNF 0.25 length pan shape slotted head machine screw to tightened
the housing. But it is still leaking vacuum. I got the shop manual to
see the diagram. I see I am supposed to have 3 screws. I got one screw
remain. I got another one to tighten the housing. I do not the
location of the third one. Question: is it suppose to have 3?
*** The diagram shows I may be missing a choke shaft washer and nut
(#39 and 40 in the diagram, and also a choke retainer seal (#2Cool.
Question: will I be able to find these in a rebuilt-kit?****** Manual
instruction also says drill out the 2 rivets. Question: to do what?
Manual also says use outside vacuum source 17" to hold the choke
when assembly? question: how to get an outsdie vacuum?

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ogeefrommikoogee

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Since: Feb 23, 2006
Posts: 2



(Msg. 2) Posted: Sat Feb 25, 2006 12:14 am
Post subject: Re: need help on Motorcraft 740 carburetor [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

On 24 Feb 2006 08:18:23 -0800, wrote:

>I need advice on Ford Motorcraft 740 carburetor for 1984 Ford Escort
>1.6 L 2 barrel loosing vacuum on carburetor. So rpm is at 1250 rpm
>due to vacuum leak. I used carburetor cleaner to race vacuum leak and
>found it was leaking from the choke housing. Inspection of choke
>housing shows it is loose. Choke is not working at cold start. It
>appears lost one screw inside the housing. I found a matching screw
>*8-UNF 0.25 length pan shape slotted head machine screw to tightened
>the housing. But it is still leaking vacuum. I got the shop manual to
>see the diagram. I see I am supposed to have 3 screws. I got one screw
>remain. I got another one to tighten the housing. I do not the
>location of the third one. Question: is it suppose to have 3?
>*** The diagram shows I may be missing a choke shaft washer and nut
>(#39 and 40 in the diagram, and also a choke retainer seal (#2Cool.
>Question: will I be able to find these in a rebuilt-kit?****** Manual
>instruction also says drill out the 2 rivets. Question: to do what?
>Manual also says use outside vacuum source 17" to hold the choke
>when assembly? question: how to get an outsdie vacuum?

buy rebuild kit
follow directions included
vacume pump


h
u
r
c

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fgin

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Since: Apr 23, 2005
Posts: 6



(Msg. 3) Posted: Sat Feb 25, 2006 12:25 am
Post subject: Re: need help on Motorcraft 740 carburetor [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

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