air injection system

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air injection system

Postby thumper » Sat Jun 05, 2021 4:18 am

Hi guys I'm looking for a air injection system for a 95 Isuzu pickup with 2.3 L motor & 5 speed tranny. Apparently one of the prior owners took it off. Who knows whay but when I went yesterday to have emissions done the guy said it would pass but he would fail me anyway as long as that air injection system is missing. I don't have aclue where it even goes when I do find one. So if anyone has one at a resonable price please let me know. Thanks in advance.
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Re: air injection system

Postby DSUZU » Sat Jun 05, 2021 7:22 am

Can you post a picture of the L/F of your engine so we can see what you have and what you need? Dennis
There would be: pulley (pulleys?, but IIRC it runs off the top pulley on the water pump), belt, pump bracket(s), pump, hoses, diverter valve, manifold. There may (probably is) a VSV that controls the diverter valve too.
1991 LS Trooper 2.8 V6 5 speed conversion (Sold)
1989 LS Spacecab 2.6 5 speed 4x4 manual hubs, Rodeo torsion bars, extended shackles, 2" lift, K&N air filter (drop in), dump bed conversion, burgundy interior change, warn brush bar. Engine is bored .020 oversize and upgraded to 1994 pistons, head and EFI system.
Previously owned: 1987 Trooper II LS, 1989 Trooper (parts only), 1994 Trooper 3.2 Auto, 1997 Rodeo 2.6 5 speed, 1993 shortbed pickup 2.3 (project - sold) 1992 Rodeo 4x4 LS (parts car, devoured by Spacecab needs) plus some 70 plus other non Isuzu vehicles over the years. 1994 Amigo devoured to provide head and EFI system.
Heavily damaged by engine compartment fire while driving on March 24th 2018, condemned by insurance company and taken on March 30th 2018 :cry:.

https://forum.planetisuzoo.com/viewtopic.php?f=15&t=64060
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Re: air injection system

Postby thumper » Sun Jun 06, 2021 3:53 pm

Sorry Dennis this took me a minute to get the pics you requested. But here you go. Went to scrap yard yesterday, they only had a 93 pickup but had a 95 rodeo and a 96 trooper. It would help if I knew exactly what I'm looking for. Can't seem to narrow it down.
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Re: air injection system

Postby DSUZU » Sun Jun 06, 2021 8:20 pm

https://www.google.com/search?q=Isuzu+2 ... FNv68ffVQM

In this picture, the silver thing just inside the fresh air hose. It has a belt running to the fan pulley and looks like 3 hoses going to it. There should be a mounting bracket (cast iron), a tensioning bracket (stamped steel) and the pump. Best pic I could find, but my security wouldn't allow a download.
1991 LS Trooper 2.8 V6 5 speed conversion (Sold)
1989 LS Spacecab 2.6 5 speed 4x4 manual hubs, Rodeo torsion bars, extended shackles, 2" lift, K&N air filter (drop in), dump bed conversion, burgundy interior change, warn brush bar. Engine is bored .020 oversize and upgraded to 1994 pistons, head and EFI system.
Previously owned: 1987 Trooper II LS, 1989 Trooper (parts only), 1994 Trooper 3.2 Auto, 1997 Rodeo 2.6 5 speed, 1993 shortbed pickup 2.3 (project - sold) 1992 Rodeo 4x4 LS (parts car, devoured by Spacecab needs) plus some 70 plus other non Isuzu vehicles over the years. 1994 Amigo devoured to provide head and EFI system.
Heavily damaged by engine compartment fire while driving on March 24th 2018, condemned by insurance company and taken on March 30th 2018 :cry:.

https://forum.planetisuzoo.com/viewtopic.php?f=15&t=64060
City of St Petersburg (Fl) Fleet Maintenance 8/23/83 - 12/4/2018 (Retired). Started new job 6/4/2019. Was retired, now just tired.

If your wife has 5.00, and you have 20.00, your wife has...25.00

"Water is one of the greatest essentials of life. Without water, you can't make coffee."

Forget the "free education". Why waste time. Just give me the "FREE INCOME".

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Re: air injection system

Postby Shawn Anthony » Sun Jun 06, 2021 11:25 pm

I have all of these parts in stock. i am located in Reno

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Re: air injection system

Postby thumper » Mon Jun 07, 2021 5:09 pm

How much Shawn would you sell it to me for? Either shipped or I am coming towards Reno in a month and a half but I actually need it sooner to get emissions done or they will pull my registration. :(
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Re: air injection system

Postby thumper » Mon Jun 07, 2021 5:12 pm

Here's a little better pic.
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Re: air injection system

Postby DSUZU » Mon Jun 07, 2021 7:35 pm

That pic is still showing the right rear of the engine. A pic of the L/F will show how much you need (specifically, if the bracket is missing - probably, and if the extra pulley is on the pulley) Dennis
1991 LS Trooper 2.8 V6 5 speed conversion (Sold)
1989 LS Spacecab 2.6 5 speed 4x4 manual hubs, Rodeo torsion bars, extended shackles, 2" lift, K&N air filter (drop in), dump bed conversion, burgundy interior change, warn brush bar. Engine is bored .020 oversize and upgraded to 1994 pistons, head and EFI system.
Previously owned: 1987 Trooper II LS, 1989 Trooper (parts only), 1994 Trooper 3.2 Auto, 1997 Rodeo 2.6 5 speed, 1993 shortbed pickup 2.3 (project - sold) 1992 Rodeo 4x4 LS (parts car, devoured by Spacecab needs) plus some 70 plus other non Isuzu vehicles over the years. 1994 Amigo devoured to provide head and EFI system.
Heavily damaged by engine compartment fire while driving on March 24th 2018, condemned by insurance company and taken on March 30th 2018 :cry:.

https://forum.planetisuzoo.com/viewtopic.php?f=15&t=64060
City of St Petersburg (Fl) Fleet Maintenance 8/23/83 - 12/4/2018 (Retired). Started new job 6/4/2019. Was retired, now just tired.

If your wife has 5.00, and you have 20.00, your wife has...25.00

"Water is one of the greatest essentials of life. Without water, you can't make coffee."

Forget the "free education". Why waste time. Just give me the "FREE INCOME".
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Re: air injection system

Postby Shawn Anthony » Tue Jun 08, 2021 1:30 am

thumper wrote:How much Shawn would you sell it to me for? Either shipped or I am coming towards Reno in a month and a half but I actually need it sooner to get emissions done or they will pull my registration. :(


400 for everything except the belt. The belt is available at any local auto parts store.

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Re: air injection system

Postby thumper » Tue Jun 08, 2021 8:13 am

Is this the part I need?
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Re: air injection system

Postby thumper » Tue Jun 08, 2021 8:21 am

DSUZU wrote:https://www.google.com/search?q=Isuzu+2.3+air+pump&rlz=1C1GCEB_enUS884US884&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjcjv6lnoTxAhWxVN8KHfnCAzMQ_AUoAnoECAEQBA&biw=1528&bih=706#imgrc=LVnTFNv68ffVQM

In this picture, the silver thing just inside the fresh air hose. It has a belt running to the fan pulley and looks like 3 hoses going to it. There should be a mounting bracket (cast iron), a tensioning bracket (stamped steel) and the pump. Best pic I could find, but my security wouldn't allow a download.


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Re: air injection system

Postby thumper » Tue Jun 08, 2021 8:29 am

If I'm understanding this right my complete system is gone. I will get another pic of the l side to you. You are talking the exhaust, plugs and alternator side correct? I have a empty old bracket that I have always thought was the old power steering pump bracket. Yep, they took the complete power steering out of it too before I bought it, which by the way how much work would it be to put that unit back in do you all think?
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Re: air injection system

Postby DSUZU » Tue Jun 08, 2021 9:34 pm

A cast iron bracket attached to the (exhaust side) front of the head (3 bolts) is the correct bracket for the pump. The power steering pump mounts to the right side and is a combination of head and block mounting brackets.
Those pumps look like POSSIBLE correct, but no pulleys on them.
Do you have the extra pulley on your fan? Dennis
1991 LS Trooper 2.8 V6 5 speed conversion (Sold)
1989 LS Spacecab 2.6 5 speed 4x4 manual hubs, Rodeo torsion bars, extended shackles, 2" lift, K&N air filter (drop in), dump bed conversion, burgundy interior change, warn brush bar. Engine is bored .020 oversize and upgraded to 1994 pistons, head and EFI system.
Previously owned: 1987 Trooper II LS, 1989 Trooper (parts only), 1994 Trooper 3.2 Auto, 1997 Rodeo 2.6 5 speed, 1993 shortbed pickup 2.3 (project - sold) 1992 Rodeo 4x4 LS (parts car, devoured by Spacecab needs) plus some 70 plus other non Isuzu vehicles over the years. 1994 Amigo devoured to provide head and EFI system.
Heavily damaged by engine compartment fire while driving on March 24th 2018, condemned by insurance company and taken on March 30th 2018 :cry:.

https://forum.planetisuzoo.com/viewtopic.php?f=15&t=64060
City of St Petersburg (Fl) Fleet Maintenance 8/23/83 - 12/4/2018 (Retired). Started new job 6/4/2019. Was retired, now just tired.

If your wife has 5.00, and you have 20.00, your wife has...25.00

"Water is one of the greatest essentials of life. Without water, you can't make coffee."

Forget the "free education". Why waste time. Just give me the "FREE INCOME".
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Re: air injection system

Postby thumper » Wed Jun 09, 2021 1:27 pm

Previous owner tore the power steering pump out. I do think the extra pully on fan is still there. I looked up what lozone said about Isuzu ditching the system and pump after the 94 and then I read where 95 1/2 picked it back up and required it after that. The lady at the air quality board says she is looking in the manual they have and it states that my 95 is required. I'm very confused and frustrated to say the least. There are no signs that there was ever one on mine. The cheapest I can find the entire assembly with everything I need to try and put one is would be $400.00. I picked up a 94 awhile back for my wife and it doesn't have one either. The lady at emissions board asked me if the engine had ever been changed, I wonder if that would make all the difference? I found a 95 rodeo or trooper the other day at the junk yard, if they have it would it interchange with mine? :idea:
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Re: air injection system

Postby DSUZU » Wed Jun 09, 2021 4:47 pm

A picture of the left (driver) side of the cylinder head will help with this. If there are no plugs in the head, It may have never had an air system. The next thing: there should be a place on the driver door post with the build date (6/95 etc). If 95-1/2 had air pump and yours is beginning of year model, this might be proof. I had a 96 Rodeo with 2.6, but it was OBDII and it DIDN'T have a smog pump
1991 LS Trooper 2.8 V6 5 speed conversion (Sold)
1989 LS Spacecab 2.6 5 speed 4x4 manual hubs, Rodeo torsion bars, extended shackles, 2" lift, K&N air filter (drop in), dump bed conversion, burgundy interior change, warn brush bar. Engine is bored .020 oversize and upgraded to 1994 pistons, head and EFI system.
Previously owned: 1987 Trooper II LS, 1989 Trooper (parts only), 1994 Trooper 3.2 Auto, 1997 Rodeo 2.6 5 speed, 1993 shortbed pickup 2.3 (project - sold) 1992 Rodeo 4x4 LS (parts car, devoured by Spacecab needs) plus some 70 plus other non Isuzu vehicles over the years. 1994 Amigo devoured to provide head and EFI system.
Heavily damaged by engine compartment fire while driving on March 24th 2018, condemned by insurance company and taken on March 30th 2018 :cry:.

https://forum.planetisuzoo.com/viewtopic.php?f=15&t=64060
City of St Petersburg (Fl) Fleet Maintenance 8/23/83 - 12/4/2018 (Retired). Started new job 6/4/2019. Was retired, now just tired.

If your wife has 5.00, and you have 20.00, your wife has...25.00

"Water is one of the greatest essentials of life. Without water, you can't make coffee."

Forget the "free education". Why waste time. Just give me the "FREE INCOME".
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Re: air injection system

Postby itsmehb » Wed Jun 09, 2021 9:39 pm

DSUZU wrote:A picture of the left (driver) side of the cylinder head will help with this. If there are no plugs in the head, It may have never had an air system. The next thing: there should be a place on the driver door post with the build date (6/95 etc). If 95-1/2 had air pump and yours is beginning of year model, this might be proof. I had a 96 Rodeo with 2.6, but it was OBDII and it DIDN'T have a smog pump


Only pic I could find is a 2.3 head, but the 2.6 is identical. The 4 holes that should have plugs in them are just above the 4 exhaust ports. No holes with plugs, no air injection system.
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Re: air injection system

Postby thumper » Wed Jun 16, 2021 11:17 pm

So today I looked up the national phone number for Isuzu and asked about this air injection system (%$*#@&%&) that my truck was suppose to have on it. The guy made phone calls and a hour later called me back and said since my 95 was fuel injected it did not require it or have it on it in the first place but, if it was carbureted it would have had it. Called emissions air quality board back and she said without document a phone call wouldn't work. To say that I'm frustrated, irritated, fed up and angry would just be a understatement. The manuals the emissions lady is referring to are: motor manual emissions control systems and Mitchell control systems if that helps. :bounce:
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Re: air injection system / UPDATE

Postby thumper » Fri Jun 18, 2021 9:45 pm

Today the lady from air quality board better known as emissions board called me and told me I / we were right that my year of truck DID NOT COME WITH A AIR INJECTION SYSTEM! So I'm good to go have the emission test done and she said she was putting it in they're data base. But thank you for all the input it is deeply appreciated. :D
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Re: air injection system / UPDATE

Postby itsmehb » Sat Jun 19, 2021 7:26 am

thumper wrote:Today the lady from air quality board better known as emissions board called me and told me I / we were right that my year of truck DID NOT COME WITH A AIR INJECTION SYSTEM! So I'm good to go have the emission test done and she said she was putting it in they're data base. But thank you for all the input it is deeply appreciated. :D


What, the little guy wins. Maybe there's still hope for us. The greenies must be upset for sure. Congrats
1990 Amigo, 2.3 5 speed (sold)
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1985 Trooper 1.9 4 speed (sent back to KS)
1989 Trooper RS 2.6 5 spd. Red

We get too soon old and too late smart!

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Golf is just an expensive way to play marbles

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Re: air injection system

Postby thumper » Tue Jun 22, 2021 10:07 pm

Passed with flying colors.
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Re: air injection system

Postby lowzone » Wed Jun 30, 2021 1:23 pm

i just saw this, yes the 93-95 had emission solenoids on the top of the valve cover, thats it. No injection pump, no air tube, no hoses...just a couple solenoids on the top. glad you passed! NJ, anything 95 and older, No inspection needed...
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