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Author Topic: Fuel injector replacement questions  (Read 513 times)
98Avenger
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Fuel injector replacement questions
« on: June 13, 2008, 03:54:48 PM »

After fighting with an intermittant p0301 code for some time, I have traced it down to fuel injector #1 having a 6 ohm resistance rather than the ~12 ohm spec.   No. 1 plug also shows it is running rich, and there is a definite smell of raw gas when the vehicle is first started.  Runs like gang-busters with full throttle but one can feel the missfire when cruising under 3000 rpm.

Does anyone have first-hand experience in replacing the injectors, and can provide some details on what is needed to get them out and replaced? 

Also, has anyone tried these remanufactured units:
http://www.autopartswarehouse.com/details/QQDodgeQQAvengerQQCVUQQFuel_InjectorQQ19951999QQCVU12-11127-4.html
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Shiano
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Re: Fuel injector replacement questions
« Reply #1 on: June 13, 2008, 11:24:08 PM »

Haven't had to replace any injectors,

however,

From working in the parts industry [not the only one here who has], i can tell you, sometimes remanned isn't what you want to go with, unless it has a lifetime warranty. I haven't heard of CVU [unless it's known by another name] so i can't really say if they are great quality or not. I'm just picky about what i put in my engine when it comes to reman.

Just my opinion.

if there is a brand new one available for just 10% more on the price, i'd go for the new one.
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Darktengu
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Re: Fuel injector replacement questions
« Reply #2 on: June 14, 2008, 02:43:39 AM »

Does anyone have first-hand experience in replacing the injectors, and can provide some details on what is needed to get them out and replaced? 

This is NOT the right way to do it, but it's the way I do it.  And I flat out rock, so my advice is pretty solid.  Remove the two screws that connect the fuel line to the fuel rail, beware of some fuel that will spray.  Have a clean rag near by to plug the line and a bottle or something to allow the fuel in the rail to drain into. 

Then remove the two bolts that hold the fuel rail onto the manifold.  Then pop the fuel rail off.  Remove the injector(s) that you're replacing.  Make sure you pick up new O-rings for the injectors, they're not that expensive and you should replace them while you have the injectors out.  Use a little bit of grease on the O-rings to smooth them for sliding them back into the fuel rail and manifold. 

Then hook all the rest of your stuff up and you'll be set.  Good luck call if you run into problems.
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Alain95i4
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Re: Fuel injector replacement questions
« Reply #3 on: June 14, 2008, 03:18:42 AM »

and a very good advice
remove the fuel cap !

the gas will barely spill if the fuel cap of the tank is removed
this will help reversing the flow inside the fuel line

if you don't do that you could have a siphon effect

Alain
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98Avenger
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Re: Fuel injector replacement questions
« Reply #4 on: June 17, 2008, 06:26:38 AM »

Haven't had to replace any injectors,

however,

From working in the parts industry [not the only one here who has], i can tell you, sometimes remanned isn't what you want to go with, unless it has a lifetime warranty. I haven't heard of CVU [unless it's known by another name] so i can't really say if they are great quality or not. I'm just picky about what i put in my engine when it comes to reman.

Just my opinion.

if there is a brand new one available for just 10% more on the price, i'd go for the new one.


Up here in Canada, the injectors go for over $140 each from the dealers.  The price for those CVU units is for 4 injectors with a 7yr guarantee - so seems almost good to be true (even if they are remanufactured units).   Well, I will have to ponder over that a bit more.

Many thanks for your words.

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98Avenger
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Re: Fuel injector replacement questions
« Reply #5 on: June 17, 2008, 06:28:36 AM »

Darktengu - thanks for the info.  It is darn tight in there but I will give it a go.

Alain95i4  - thanks - good tip.

cheers all

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Shiano
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Re: Fuel injector replacement questions
« Reply #6 on: June 17, 2008, 11:46:24 AM »

you can always trust alain. DT too, as long as it doesn't involve concrete. lol
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Darktengu
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Re: Fuel injector replacement questions
« Reply #7 on: June 17, 2008, 09:09:38 PM »

you can always trust alain. DT too, as long as it doesn't involve concrete. lol

Never let it die LOL
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Alain95i4
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Re: Fuel injector replacement questions
« Reply #8 on: June 18, 2008, 12:38:44 AM »

and btw forgot to mention advice 2 : remove the valve cover and coil pack you will gain close to 2 inch of workspace

Alain
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Darktengu
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Re: Fuel injector replacement questions
« Reply #9 on: June 18, 2008, 01:19:05 AM »

and btw forgot to mention advice 2 : remove the valve cover and coil pack you will gain close to 2 inch of workspace

Alain

Damn I forgot that too.
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Sroufe7
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Re: Fuel injector replacement questions
« Reply #10 on: June 18, 2008, 02:32:59 PM »

If I was you...I would just replace them all with a set of accel injectors.  Would be a lot cheaper than buying 4 reman units.

Here is a link to our catalog:  http://catalog.disturbingmotorsports.com/index.php?main_page=product_info&cPath=1_2_3_4&products_id=1

I believe 24# injectors are stock.
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Alain95i4
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Re: Fuel injector replacement questions
« Reply #11 on: June 19, 2008, 12:28:28 AM »

I believe 24# injectors are stock.

#24 are bigger than stock
we are using Bosch yellow in theory they are #19

Alain
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Sroufe7
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Re: Fuel injector replacement questions
« Reply #12 on: June 19, 2008, 02:37:08 AM »


#24 are bigger than stock
we are using Bosch yellow in theory they are #19

Alain

You are pry correct...I asked Jim and he thought 24's were stock.   Shocked
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Alain95i4
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Re: Fuel injector replacement questions
« Reply #13 on: June 19, 2008, 04:35:23 AM »

when I did the 2.4 swap I used the stock 2.0l injectors and I was running lean on the narrow band and high on the egt
I switched to a set of accel #24 and the egt dropped a lot the narrow band was happier too

definitely not #24
could be 21 or 19 since neons have 19

Alain
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98Avenger
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Re: Fuel injector replacement questions
« Reply #14 on: July 23, 2008, 05:16:43 PM »

Thanks Alain95i4, Darktengu and Sroufe7 - I installed 4 new ACCEL injectors (21 lb ones) from Disturbing Motorsports yesterday afternoon - and installed a new valve cover gasket at the same time.  That was a great tip on removing the valve cover as that sure did give some extra room for getting at the injectors and fuel rail.  I took my time and got the whole thing done in about 3 hours.  Now to get it out for a longer test drive (a spin around the block yesterday seemed promising, but I need to get it up to temp and give it a good run) - and then change the oil. 

Here's a tip back - when reinstalling the bolts that attach the fuel supply to the fuel rail, use allen-head bolts to replace the small bolts - a t-handle wrench holds the allen-head bolt quite securely and makes it much easier to get it started in the threads. 

thanks again

Tom
98 ES Avenger - Black is the ONLY color!!


ps: great service from Disturbing - they are now on my favorites list, and will definitely use them again
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