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How To Remove & Delete Mustang Smog Pump (1982-1995)

Posted 3/7/2019 by Tyler Rodriquez

Follow along as LMR walks you through the removal of the smog pump and installation of the smog pump delete on your 1982-1995 Mustang.

FOLLOW: mustang , 79 93 mustang , 94 04 mustang , installation

Removal and deletion of your 79-95 Mustang's smog pump assembly is a quick easy way to free up engine space, a few free horse power, and also weight off of the front of your pony.

Installation Instructions

  1. Begin by supporting your Mustang with either a lift or jack and jack stands.
  2. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  3. Rotate the belt tensioner with an 18mm socket and breaker bar.
  4. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  5. Remove the serpentine belt and set it aside.
  6. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  7. Disconnect the mass air flow sensor connection (if equipped) and remove the inlet pipe off of the vehicle.
  8. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
    How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  9. Dislodge the small vacuum line from the diverter valve and the air bypass valve.
  10. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  11. Loosen and remove the top 1/2" bolt from the smog pump assembly.
  12. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  13. Moving to the underside of the car, remove the 1/2" nut from the stud on the engine block. Bring the smog pump down then remove the hose from the smog pump. Normally these will have a standard style hose clamp retaining this.
  14. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  15. Remove the smog pump from the car.
  16. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  17. Take the smog pump to your work bench and remove the 5/8" bolt that secures the small bracket on the backside of the pump assembly.
  18. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  19. Clean or replace all associated hardware and the small smog pump bracket at this time.
  20. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  21. Apply a small dab of antisieze to the threads on the hardware going back on the vehicle. This will include the short bolt, the long bolt and the stud located on the engine block.
  22. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  23. With your new smog pump delete in hand, insert the log bolt through the provision on the top side of the bracket and thread this in loosely tighten it into place.
  24. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  25. Position the small bracket over the stud on the engine and thread on the nut. Align the bracket with the delete and loosely tighten the short bolt.
  26. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  27. Snug down all to this hardware then fully tighten the smog pump delete into place.
  28. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  29. Remove the hose clamps found on the midpipe assembly and remove the hose from the midpipe.
  30. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  31. Take a pair of vise grip pliers and crimp the tube coming off of the midpipe to prevent any exhaust leaks. You can also cut this flush and weld the hole closed if you prefer a cleaner install.
  32. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  33. Moving back to the engine bay, remove the hose clamp that holds the hose to the upper check valve.
  34. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  35. Loosen and remove the lower hose from the bottom of the air diverter valve. Remove this from the vehicle at this time and discard.
  36. Next, moving to the air tube bracket, remove them from the engine.
  37. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  38. Go to the backside of each cylinder head and remove the 1/2" bolts that hold the thermactor tube into place. Fine the vacuum union in the middle of the engine bay next to the bulkhead and separate the two halves. Be careful not to break or kink any of this line to prevent any vacuum leaks.
  39. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  40. Remove the thermactor tube from the engine.
  41. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  42. Remove the air tube assembly from the car and reconnect the vacuum union. Cap off all of the associated lines at this time. This will include the aid diverter and air bypass valve.
  43. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  44. Moving back to the rear of each cylinder head, clean any carbon build up from the smog ports. Once this is achieved, take the smog delete plugs and apply high temp thread locking sealer on the threads and install these into the associated ports. Thread these in until they are completely flush with the head.
  45. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
    How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  46. Reinstall the air intake tube and mass air flow connection.
  47. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  48. Reinstall the drive let back on the engine pullies in the proper routing to your application.
  49. How To Remove & Delete Mustang Smog Pump (1982-1995) - How To Remove & Delete Mustang Smog Pump (1982-1995)
  50. Allow the thread sealer to fully cure from step 23 before testing the engine. It does not hurt to let this sit overnight just to be sure.
  51. Start the engine and check for any leaks and for proper operation.

Congratulations, you have just successful removed and deleted the smog pump assembly from your engine. To see more how-to articles covering industry leading products, check out LMR.com for all things 79-present Mustang and Lightning.


Smog Pump Delete Parts

  • $12.99
    5.0 Resto Logo
  • $50.99
    5.0 Resto Logo
  • $34.99
    5.0 Resto Logo
  • $39.99
    5.0 Resto Logo

About the Video

How To Remove & Delete Mustang Smog Pump (1982-1995)

Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

Published on 2019-01-25
Mustang 5.0 Resto Smog Pump Eliminator/Delete Pulley.
This 5.0 Resto Smog Pump Eliminator Kit for 5.0L and 5.8L Ford engines is ideal for Vortech/Paxton applications that will be mounted on the passenger side of the engine. Free-turning Pulley requires less horsepower from engine resulting in more power to the rear wheels. The eliminator kit retains factory size belts or same belt that you are running on your Mustang. This smog eliminator pulley comes assembled with the bearing assembled to mounting bracket making this product ready to bolt in with factory bolts. Don't forget to purchase your head plugs to complete your installation!

Product Specifics:
- 4.5" Outer Pulley Diameter
- 6-Rib Pulley

Product Notes:
- 1994-1995 will require minor clearancing of the eliminator & the accessory bracket to achieve proper bolt alignment.
- This part is not intended for sale or use on pollution controlled motor vehicles.

Applications: 1982-1995 5.0L Mustangs

Item # LRS-9486BL
Transcript
What’s up everybody? Landan here with lmr.com! In today’s video, I’ll quickly talk about 5.0 Resto’s smog pump delete assembly and show you the steps you need to take to install one into your Fox Mustang.

This smog pump delete or smog pump eliminator is designed with simplicity in mind. It isn’t over-engineered or a complicated component. It consists of a 4.5” diameter pulley that incorporates 6 ribs which will allow you to reuse your existing belt.

The bracket, pulley shaft and pulley all feature billet aluminum construction and you’ll find that the bracket itself as the correct threaded provisions for the retaining hardware.

Speaking of retaining hardware, you can reuse what is on the car or take this time to upgrade to 5.0 Resto’s hardware. It includes both the long and short bolt along with the bracket retaining nut and bracket. All of the hardware is manufactured by ARP which will offer good looks and resistance to corrosion.

Now the only disclosure for this part is the fact that you are removing a component related to pollution or emissions. It is important that you check with your local laws and regulation before installing this delete as all states typically have different emission laws.

Also note that removing the smog pump and the rest of the components associated with the pump, you will have to plug the back of the cylinder heads.

I’ll be honest with you, this is a pain in the you what because of the years of carbon build-up and the lack of work room.

Typically, what I have found that works best if you’re doing this with the engine in the car; is to flute the plugs and then thread them in the holes to clean out the carbon.

As far as fitment goes for this smog pump delete, it will fit 1982 to 1995 five liter based engines. Now 1994 to 1995 owners will have to slightly clearance the delete bracket and the accessory bracket to achieve proper belt alignment.

In the box will be one smog pump delete with the rest of the components being available on the site a la carte.

Begin by rotating the belt tensioner with an 18mm and break-over bar.
Slide the belt off the smog pump.
Disconnect the mass air meter connection if equipped and remove the inlet pipe.
Dislodge the small vacuum line from the diverter valve and air bypass valve.
Loosen and remove the top 1/2-inch smog pump retaining bolt.
From underneath the car, loosen and remove the 1/2-inch nut from the stud in the engine block.
Bring the smog pump down and remove the hose.
The clamp on our car was broken, but more than likely you’ll have to loosen this clamp first before removing the hose.
Remove the smog pump from the car.
Remove the 5/8-inch bolt securing the small bracket.
Either clean and reuse the hardware, or pick-up our hardware kit that includes a new bracket and properly spec’d ARP hardware.
Apply some anti-seize to the shorter bolt, the longer bolt including the shoulder, and the stud on the engine block.
Position the delete assembly and slide the long bolt through the top.
This can be loosely tightened at this time.
Position the bracket over the stud and thread on the nut.
Align the bracket with the delete and loosely tighten the short bolt.
Go ahead and snug down the hardware and then fully tighten.
While you’re underneath the car, loosen the hose clamps that secures the rubber joint tube.
This tube connects the long air tube to the mid-pipe.
To keep things simple, I just cut ours right down the middle.
Remove the hose from the mid-pipe.
Take a pair of vice-grips and crimp the end of the tube on the mid-pipe.
You can also cut this flush with the piping and weld it up.
Moving back into the engine bay, loosen the hose clamp that secures the upper hose to the upper check valve.
Loosen and remove the lower hose from the bottom of the air diverter valve.
This portion of the smog equipment is free to come out.
On our car, the air tube bracket was loose; we left it in place and addressed the thermactor tube.
This tube is secured to the back of each cylinder head with 1/2-inch bolts.
Loosen and remove these bolts.
In order to remove the thermactor tube, you will need to separate the plastic vacuum union and position it out of the way.
Rotate the thermactor tube in a way that allows you to remove it from behind the engine.
Now you can remove the air tube from the car.
Either clean and reuse the factory smog pump hardware or upgrade to our 5.0 Resto hardware.
We’re upgrading our hardware, but whatever you choose to do; apply some anti-seize to the threads and shoulder of the long bolt, the threads of the short bolt, and the stud on the engine block.
Locate the non-threaded hole that runs through the entire bracket; position this into the factory bracket and slide the long bolt.
Turn it a few times to hold it in place, but do not fully tighten.
Slide the smaller bracket over the stud in the engine block; this will only install one way.
Thread on the nut and finger tighten.
Align this bracket with the rearward threaded hole on the smog pump delete bracket.
Install the short bolt and loosely tighten.
At this time you can tighten all of the hardware associated with the smog pump delete.
Reconnect the vacuum union.
Leave approximately a 1/2-inch of tubing exposed from the union so that you can properly cap these lines.
The lines that need to be cut connected to the air diverter and air bypass valve.
Cap these lines with 5/32 vacuum caps.
Now comes the fun part!!
What I have found that works best on cleaning the carbon is by fluting the smog plugs.
Carefully do this with a grinder! Be sure and use proper eye and body protection.
Once the flutes are made, thread the plug a few turns until the flutes become filled with carbon.
Clean the flutes and repeat.
Do this until the entire opening is carbon free.
Once this is achieved, apply some high-temp thread locking compound with sealer to the threads.
Run the plug all the way into the head until it is flush with the back of the head.
I use a quarter or a bolt with floating washer to run the plug down.
Do this for both holes.
Now you can reassemble the air intake system and reconnect the mass air flow sensor if equipped.
Before installing the belt verify that yours does not need to be replaced.
Ours did, so we installed a Motorcraft belt for our application and year range.
Properly route the drive belt onto the system.
Rotate the tensioner and position the belt into place.
Verify that the tensioner is within its recommended range.
From there you’ll need to allow the thread sealer to fully cure and then you can start the car to verify everything works as it should.
After that, you’re all finished!

Whenever you plan on removing the smog pump from your Fox, allow yourself enough time to properly plug the heads. The rest of the smog pump junk can be removed fairly quickly.

Once you do get all of that crap out of the engine bay; you’ll be asking yourself why you didn’t do this sooner.

For the most current pricing and product information be sure and check out the product page.

To see more how-to and review videos covering industry leading products, be sure and subscribe to our YouTube channel, like this video, and turn on notifications. While you’re at it, checkout our other videos and for all things 1979 to present Mustang and SVT Lightning; keep it right here with the real enthusiasts, LMR.com!