My county just passed a visual emisions check and my truck by for did not pass it.It is a 1977 ranger 4x4. They say I need 2 cats.My question is about the other stuff.Where do I find a air pump,canister,egr valve,and pvs to back in it? The stuff doen't even have to work it just needs to be there.I can't even find were the air pump would bolt on at.Any info will be extremly helpful,I never owned a truck with this crap on it.

 

i dont think a 77 had any of that junk except maybe an egr. cause my dad had a 78 bronco and all it had was egr. no cats until 79, emissions was based on gvwr of vehicle.
what does the vacuum diagram say: catalyst or non-catalyst, it should also list what emissions equipment you have on it too.

 

hey thanks 84-250!!! It says non-catalyst. What does that mean in plain english?

 

I think you were heavy enough to avoid most of the EM stuff. Non-catalyst would mean no converter were ever on it.

 

that is some of the best news I have heard.Thanks beartracks,that helps alot.I checked the diagram,it does not tell me what the other stuff on it is?

 

look on the vacuum diagram and see if there is supposed to be an egr valve. 1979 is when ford started the emissions based on weight. On the very bottom of my sticker it lists the 4 emissions items i have.

 

FWIW I have a 78 f250 ranger that has all of the emissions er, um, stuff (egr, air pump, cat, cannisters). I believe this is only because it came from CA 'tho.

 

My 1980 F350 is a non-catalyst, but it had an air pump. I had an inspection station tell me to get rid of the bracket for the air pump, and they wouldn't know it ever had one. I just got my registration card today, and I am exempt from the inspection, I guess because of the weight.

 

The only thing I can find is the EGR and the pvc. I am guessing that is all that is on it.

 

I'd be pretty surprised if it didn't have an A.I.R. pump on it even if it was a non catalyst vehicle. Maybe you can get away without it.

 

1> 4x4 what? 150? 350? What's the GVW? (That should be on the label on the driver's side door frame.)

2> Ford didn't make any vehicles with 2 catalysts in the 70's. The late 70's Pintos and Bobcats had what was called a DUAL catalytic converter. Dual referred to it being two stages internally, with the second stage having a separate connection to O2 from the AIR pump. If they told you that you needed a dual catalyst, they're trying to hold you responsible for the equipment list from a Bobcat, not a truck. I would assume a visual inspection would require only the OEM equipment.

3> Any US (not Canada) '77 would almost certainly have a PCV system. It is very likely to have an EGR as well. You say it's non-catalyst. But that only gets you out of having to mess with the exhaust piping. On the Vehicle Emissions Control Information label, on the first line that lists engine displacement, it should say something like EGR/P.A.S./PCV. The diagram should (hopefully) ID what vacuum connections are made.

4> Is this the original engine? Is it a 351M/400 and was the original the same? Or is it a transplant from a different year? Is this a California vehicle and/or are you in California?

5> Do you have the fuel emissions cannisters? There should be one or two black plastic cannister inside the engine compartment near the bottom of the passenger side fender. There should also be one or two steel lines running from that location to the fuel tank, separate from the transmission cooler lines. If you've got the cannisters and the lines, you're in good shape. If yopu've got the lines, and no cannisters, you'll need cannisters, really. No lines and no cannisters and vehicle over 8000 GVM means no cannisters.

6> PCV is easy. Look on the passenger side valve cover, near the rear. Is there a hole with a gromit and an elbow coming out of the cover? If so, that should connect with some heater hose to the air filter housing. All you need then is an oil cap with a PCV hole in it and the PCV valve (cheap at at parts store), and some hose. (You WANT PCV. PCV is good.)

7> Do you have steel spacer between the carb and the intake manifold? At the back of the carb, the space should jut out and there should either be an EGR valve, a steel cover for the spacer or something.

8> Is there a engine plug with a brass pipe sticking out of it on the intake manifold, near the front passenger side? Is it connected to anything? Or is it just engine block plug? That's the intake for the AIR pump.

9> Almost all of this stuff can be ripped out of any Ford car or truck from the late 70's (with a 351M/400). That's where you'll find the brackets and EGR spacer, and so on. You'll have to make some of this stuff work, particularly the air pump. But you can rig up the air bypass valve to permanantly vent the air pump output to the atmosphere.

ash
['Do dah.']

 

Its a heavy-half with a 351m/400 engine.The sticker says heavy duty engine on the bottem of the sticker. The truck has after market brand new stainless steel exaust on it. That is why I needed 2 cats.Has I said before, the label with the c.i.d. on it says on top-Emission equipment on truck- then it says nothing about what stuff came with the truck.It does say it complys with all laws for 1977.Made in canada

 

Hey all ,just wanted to tell all that the truck passed inspection.No cats,no nothing exept a EGR valve and a pvc.Thank God they didn't put that much ***** on them in the 70,s.Thank you all for the info on all the stuff.