Vacume hose diagram?

[brandonwilliams]

Ive got an 80 fj40 that some one has take the smog off and i have to pull the choke out to make up for vacume i would like to know if someone has a link or something that could help me ive tried everything to get it to run right! BTW! Im just a rookie!

 

[kurtnkegger]

Hey Brandon, how about a picture under the hood? I suspect that is where your vacuum problem lies...

Welcome to mud

 

[mydogpea]

Very nice rig! I bet you payed a very pretty penny for it. Now all you gotta do is get it to run right.
x2 on the engine pics.

 

[Rocky_LC]

The 60 Series Forum has a "My Desmog Thread" that is a wealth of knowledge.

Not sure if there is an '80 2F diagram, but that's a great place to start (all 20 pages (or more) of it).

Rocky

PS> Sounds like you may have a vacuum leak (not a smog problem) to me.....

 

[Curtice]

I have a 1980 as well and have found this thing useful that someone posted in the interwebs:

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There are diagrams and pictures from a 1980 2f of the emissions system. At least you can use this to check that everything is hooked up to its proper location.

 

[josharre2000]

Brandon--got your PM. I know this might not help but the Weber 38/38 has an electronic choke. One of my cruisers has this set up w/o smog and it runs awesome.

 

[brandonwilliams]

Thanks I'll try the desmog thread I bet that will have some pics,by the way my smog is already off, there's just some hoses that I'm not exactly clear what there for thanks!

 

[FJ40Jim]

Please post pics of the engine bay in it's current configuration.

 

[brandonwilliams]

Jim C

Here are some pics not good but the best i can get in my shop, if you need any more let me know, you see the red cap on the manifold that is a shift lite cover for an autometer tack HAHAW,when you take that cover off the thing will die at idle, this is the way i got it an i have been doing a lot of this and that to try to get it to run good, right now it runs good but on a hot day when i get to the big hill to go to my house it starts shuttering bad and i have to pull the choke out a little to get up the hill once i peak the hill its back to normal,the previous owner said he never had any problems, but it sit since 96 i replaced all the plugs wires etc,its just vacume that im having a problem with thanks JIM!

 

[FJ40Jim]

Pics are so useful. There should be a requirement that all tech threads start off w/ pics of the problem area.

The carburetor is a fairly stock looking 1975 USA 2bbl.

The electric ticker fuel pump mounted relatively high and far from the tank is a bad idea. That could be part of the difficulty on the big hill. The elec pump is failing to pull fuel from the tank, because they are much better at pushing fuel. It is strongly recommended to get the stock mechanical pump reinstalled.

The attached pic shows how the vac ought to be routed. Vaccum from the (broken) fitting on the manifold goes to the carb's AAP, PV and CB. Post in the classifieds that you are looking for a 3-port vacuum fitting from a 2F intake manifold. There should not be a vac hose connected to the EGR (red X). Just leave it open to atmosphere.

There are 1 or 2 ported vac fittings on the base of the carb, by the valve cover. One of those should be connected to the distributor vacuum advance. Actually, it would be good idea to post a couple pics of the distributor so we can see if it is a 1980 or a 1975.

 

[brandonwilliams]

Jim C

Thanks that was a great deal of help! Im going to give you a pic of the distributor to see whats messed up on that side.

 

[FJ40Jim]

That is a stock 79-80 dissy. It is a good unit, as long as the vac advancer still works. They are old enough now that the failure rate is ~50%. Get a mityvac tester and see if the two vac fittings will hold vacuum. also, pull off the dissy cap and verify that when vac is applied, the plate moves inside the dissy.

If they are both good, then connect the vac advance hose to the inner fitting, closer to the dissy body.

If only the outer fitting test good, then connect vac there and bump up the idle timing a couple degrees.

If neither fitting holds vac, then consider getting a used 81-87 dissy and engine side cover.

On the dissy cap are 2 hoses. The big red one should go to a small filter inside the firewall. The smaller one that is currently hanging out should go up to the top of the air cleaner. It is important to have the hose connected to air cleaner, because it will pull air through the dissy to keep the electrically charged (ionized) gases moving out of the dissy. Ionized gas is aggressively corrosive and eats the innards of a sealed dissy.

 

[brandonwilliams]

Thanks Jim seems like a got a little work to do now!