Replacing the OEM injectors on my 96 5.2 motor
#3206155
01/19/24 11:19 AM
01/19/24 11:19 AM
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Joined: Jan 2003
Posts: 10,639 Freeport IL USA
poorboy
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Freeport IL USA
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Hey guys, the motor in my 49 Dodge pickup is a 5.2 out of a 96 Dakota with about 60,000 miles on it now. I suspect most of the donor truck's use was originally only winter use because the truck only had 44,000 miles on it (the frame was rotted away) up until I used the drive train in my 49 and started driving it in 2022. That means most of the time those injectors say with pressure on them and no use. Since then I have put around 16,000 miles on it.
I'm thinking it might be a good idea to just replace the OEM injectors, but the options sound pretty limited. I can get OEM rebuilt injectors for around $400, or I can buy new Bosch injectors for an LS Cheby for $350. At that price point I think I would rather buy new rather then rebuilt OEM. Supposedly the GM Bosch units are 4 hole compared to the one hole Mopar OEM and are better at fuel atomization, but there is some question as to if they are a plug and play, or if I need an adaptor to connect them to my wire harness. This is not a race motor, just a daily driver.
What is the word from the Mopar camp?
Last edited by poorboy; 01/19/24 11:20 AM.
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Re: Replacing the OEM injectors on my 96 5.2 motor
[Re: jerseybud]
#3206712
01/21/24 12:55 AM
01/21/24 12:55 AM
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Joined: Jan 2003
Posts: 10,639 Freeport IL USA
poorboy
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OP
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Injectors can either be ev1 or ev6- that describes the type of connector to the injector itself Chrysler used both 96 should be ev1 I like the 4 hole injectors and been using several sets from CS perfromance on ebay. They call them upgrade injectors, they are like 22 lb/hr at 39 psi- can be overdroiven in vehicles using 49 psi, like what the ev6 trucks came with. AVOID adapters at all costs- some real junk out there
So I went on the CS Performance website, all their listed injectors are rebuilt by themselves. Their list of injector options have 94 & 95 5.2, or 99 to 2006 5.2/5.9, all for the "upgrade" injectors. The only listing I see for the 96-99 is the OEM replacement injectors or injector repair kits. I hate it when everyone wants to skip a few years in their listings. I read on one of the websites that the change between the EV1 and the EV6 was when Dodge went to the OBD2 system, but it failed to tell which EV was the early one and which was the later one. Prices are all over the map as well. There are "no brand name" rebuilt 4 hole injectors on Ebay for as low as $69 for a set of 8, ranging up past $260 for a set of 8 rebuild by Bosch, to $63 each for brand new Bosch. The Siemens Injectors, which are supposed to be OEM Mopar parts and replacements are new injectors for around $259 for a set of 8. I was not expecting this big of a mess! Changing the injectors on this truck is going to be a pain, I would rather just have to do it once if possible.
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Re: Replacing the OEM injectors on my 96 5.2 motor
[Re: 360view]
#3206887
01/21/24 03:55 PM
01/21/24 03:55 PM
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Joined: Jan 2003
Posts: 10,639 Freeport IL USA
poorboy
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Thanks guys. i believe I'm gaining more understanding. I'm probably going to just order the rebuilt originals.
My area of concern about the injectors is not so much they are "wore out" because in general, they are pretty much low mileage items, my concern was more towards the amount of time they were not in use over the years. The truck was only driven about 1500 miles a year from 1996 until it came into my possession in 2020 I am more concerned about carbon build up inside the injectors that may prevent smooth, consistent operation, which I believe my problem is.
I suppose sending them out to get cleaned would probably be the best answer, but this truck is my daily driver and one of only 2 vehicles we have here, with two drivers often going different places at the same time. I can't afford to take it out of service for a week or more it may take to send off and wait to get my injectors back.
Another factor in this process is that changing the injectors on this motor in this truck will not be a simple process. Its going to require the removal and reinstallation of the painted 3 part hood (a 2 person job). I've watched the videos about changing them. I expect this to be another one of those experiences where doing it one time will be plenty for me. I'm getting too old for this stuff.
Pic 1) The hood before paint. The center piece is attached to the top of the firewall at the rear, and to a panel in front of the radiator in the front, and the sides hinge off that center piece and latch to the fender supports. Pic 2) The reason for the hood removal. That air filter housing has to be tipped just right to get it out from under the hood. This would be the easy side. Pic 3) There are two of those aluminum tanks bolted to the filter housing now, both will have to be removed to remove the filter housing. This side isn't going to be very fun, even with the hood removed. The motor is mounted on factory Dakota 4x4 motor brackets, and the brake booster is bolted to its original position on the Dakota firewall.
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Re: Replacing the OEM injectors on my 96 5.2 motor
[Re: stumpy]
#3206987
01/21/24 08:21 PM
01/21/24 08:21 PM
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Joined: Jan 2003
Posts: 10,639 Freeport IL USA
poorboy
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OP
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Posts: 10,639
Freeport IL USA
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You should be able to find a local shop to clean the injectors.Check truck shops. I will look into it, but most places around here don't do any specialty stuff inhouse, they all ship stuff out. By the time I pay for the new "O" rings, the cleaning, the price markup, and the shipping, I'm probably close to the price of buying the rebuilt ones on line and having them shipped to me. I also won't have the down time.
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Re: Replacing the OEM injectors on my 96 5.2 motor
[Re: poorboy]
#3207170
01/22/24 01:21 PM
01/22/24 01:21 PM
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Joined: Dec 2006
Posts: 2,119 Byron, NY
W.I.N. Racing
top fuel
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top fuel
Joined: Dec 2006
Posts: 2,119
Byron, NY
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There are in place (Non Dismantle) fuel injection cleaning kits available. The set up is as follows; Disconnect the fuel lines to the injection fuel log on the supply and return ports. Cap the return port and attach the injector cleaning equipment. Start the engine and let runs until the cleaning agent runs out. Re attach connections to normal and your done. I used this process quite a bit back in the 90's and it worked well.
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60 '01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust, '05 Dodge Magnum R/T - Too Much to list '60 Willys CJ5 '01 International LPX - Project,DT466, Allison '64 Plymouth Valiant, Inj 528 Hemi, 2spd
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Re: Replacing the OEM injectors on my 96 5.2 motor
[Re: W.I.N. Racing]
#3207258
01/22/24 05:24 PM
01/22/24 05:24 PM
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Joined: Jan 2003
Posts: 10,639 Freeport IL USA
poorboy
OP
I Live Here
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OP
I Live Here
Joined: Jan 2003
Posts: 10,639
Freeport IL USA
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There are in place (Non Dismantle) fuel injection cleaning kits available. The set up is as follows; Disconnect the fuel lines to the injection fuel log on the supply and return ports. Cap the return port and attach the injector cleaning equipment. Start the engine and let runs until the cleaning agent runs out. Re attach connections to normal and your done. I used this process quite a bit back in the 90's and it worked well. Where might I get something like this these days? Is there a brand name or something to look for online?
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Re: Replacing the OEM injectors on my 96 5.2 motor
[Re: moparx]
#3207640
01/23/24 09:04 PM
01/23/24 09:04 PM
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Joined: Nov 2022
Posts: 215 Green Bay
Andyvh1959
enthusiast
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enthusiast
Joined: Nov 2022
Posts: 215
Green Bay
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I had the two Bosch injectors for my 1994 BMW R1100RS cleaned and flow matched years ago by this shop in Depere WI: https://dsgbinc.com/They said my injectors, at that time with 150,000 miles on the bike, were very clean and required little work. But I rode the bike regularly and at least twice a year ran Techron in the fuel, and always used premium whole gas. I use NO E10 or E15 crap in any of my small engines, never had a fuel related issue with any engines.
My 56 C3-B8 Dakota build
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Re: Replacing the OEM injectors on my 96 5.2 motor
[Re: 360view]
#3207734
01/24/24 08:18 AM
01/24/24 08:18 AM
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Joined: Jan 2006
Posts: 8,162 USA
360view
Moparts resident spammer
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Moparts resident spammer
Joined: Jan 2006
Posts: 8,162
USA
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