Time to replace injector!!!

[petar_83]

Hi guys, it's time for me to replace the fuel injector. I tried a couple of times using fuel injector cleaner but it didn't work. I measured the resistance on the bad injector and the ohmmeter didn't measure anything. The rest of the injectors read between 10 and 14, so I figured it can't be anything but the injector. The bad one is the first one on the front right side. The location isn't too hard to reach. I saw that there are two screws, you can see the right one and the left one is under the intake manifold. I already have a new injector and it's ready to be installed, so I'm thinking I have about 3 options:

1. Install the injector by myself, which would be the hardest. An easier way, as one guy posted, that he replaced the injector without taking off the manifold, but this is kind of risky and there's a chance that I might wreck the car.

2. Install the injector by myself by taking off the manifold. There are 8 long bolts in the center of the manifold. Is there anything else that you need to do to take the manifold off? Does anybody know if there's anything else that holds the intake manifold to the lower manifold? I know that I have to disconnect all of the wires and coils, but isn't there something besides just the bolts that keep them together?

3. Or...take the car into the shop.

[driverdriver]

If its not to hard to reach and you have the time, I would try it myself. If you run into setbacks take it to a shop.

[gr8scott72]

2. Install the injector by myself by taking off the manifold. There are 8 long bolts in the center of the manifold. Is there anything else that you need to do to take the manifold off? Does anybody know if there's anything else that holds the intake manifold to the lower manifold? I know that I have to disconnect all of the wires and coils, but isn't there something besides just the bolts that keep them together?

Unless your mechanical skill is somewhere between advance and expert, DO NOT even attemp to take the manifold off. There are dozens of hoses UNDER the manifold. EGR valve tubes, harnesses, more harnesses, more tubes (many that brake while you are removing the manifold), etc all have to be removed before the manifold will come off.

I've said it before, I'll drive my car off a cliff before I EVER take the manifold off again.

[Jakw]

My vote goes to the dremel method. I did it on injector #5, which is probably the hardest one to reach. Take your time and plan ahead, and you should do ok. Make sure you have a small flashlight and one of those little telescoping magnets, just in case.

[93jdirty']

i Just replaced cylinder number 3 fuel injector sucessfully using the dremel method, go to fuzzycats.com for info. Also check Infinitipartsusa.com for awsome prices on the injector. Overall the job was not too bad, The hardest part was breaking the torqe on the phillips head screws ( use brand new number 2 driver) and actually puling the injector out it is well worth the 500-600$ of labor you save by doing this yourself.

[petar_83]

Ya I was gonna ask about those two skrews.They seem to be very easy to get stripped.Is it gonna work if spray a little bit WD 40.One more thing if I take them off successful can you just pull the injector out with pliers, do you have to soak it somehow or something.What is that liquid wrench. What's the best way to take it out.and about the manifold is there any other bolts besides those 8 in the center that keeps tight I know there is a lot of harnesses and staff but what is the main.

[Jakw]

I had to use an impact driver to get the phillips head screws lose. You might have luck with a brand new screw driver and some PB blaster, but I sure didn't. You'll need to soak the injector in silicone lubricant before you pull it out. Spray it, let it sit, twist it around, repeat. Do that a few times, and it will still be a pain to pull out, but not impossible.

As far as pulling it out...expect the whole red plastic top to get destoyed. These were designed to be tapped out from the bottom, so they're in no way built to be pulled out like you're about to do. You need something that can get a firm grip, enough to overcome all the silicon lube over smooth plastic. It will be work, but you can get it.

[petar_83]

So is the impact driver good idea for those screws.I'll soak them first.But is there any chance that I can strip them with the impact or should I use just regular screw driver.I have no clue if for some reason I ruin those screws then I'm kind of..........So I better don't

[Jakw]

The impact driver actually loosened the screws after I had stripped them with the screwdriver. A lot of my plenum sanding time went to getting the angle right so I could fit the impact driver in there. I did this whole thing over the course of two or three days. If I did it again on any other injector besides #5, I would guess a couple hours at most.

I think the impact is a good idea. The idea is that they won't strip screws, just bust them loose.

[misfit6794]

The biggest problems I had when taking off the manifold was everything that was under it, as posted above. The erg tubes are rediculously hard to get to. THe fuel lines on top of the manifold are also a major pain. Its not that hard to locate a new manifold if you ruin that one, I would definetly dremmel it.

[93jdirty']

I did not need a impact driver, spray with liquid wrench the night before and after your done grinding the plenum put all of your weight on the screw driver and turn with all your strength. It will come loose. Pulling the injector out is a different story, you will need to get creative using all the tools you have to get that sucker out

[yodawill2000]

Im trying this next time around .The pics are gone but he describes it pretty well.Basically tie a noose around the injector making sure the rope is under the tabs on either side .

zerothread/325580

[petar_83]

The project with the rope failed for me (I used wire though).Now the red plastic part of the injector is broken but at least I have both of the screws out.Now I just soaked it really good with liquid wrench and I will leave it until tomorrow.Got to find something to pull the rest of the injector.So do you use vaseline on the O-rings or something else.I'll keep you posted.

[93jdirty']

I used a dab of white lithium grease on the o rings and it worked fine

[yodawill2000]

soaking it well and leaving it overnight and then twisting the injector before pulling makes a huge difference.

[petar_83]

after 3 days of soaking the injector came out.i have the new one in but then the car wouldn't star.It sounded like something is grinding or something.The starter was not even spin the engine.It was because the whole cylinder was flooded.I mean the gas was reaching the spark plug.I blowed everything out and now the J is working and purring like a kitten.I am so glad .Thanks everybody.

[yodawill2000]

Man O Man you dodged a HUGE bullet !!

Hydrolock often bends the valve's and thrashes the motor .You must be living right !!

[Jakw]

Nice work. I'm glad to hear you got it all working.

[gr8scott72]

Man O Man you dodged a HUGE bullet !!

Hydrolock often bends the valve's and thrashes the motor .You must be living right !!

You're not going to hydrolock a motor with just the starter. Or I guess I should say, you won't cause any damage with the starter on a hydrolocked motor.

[yodawill2000]

Well Duuh lolIf a single cylinder fired it would.Being completely full of fuel saved his motor is kinda what I meant ..

Bullet ,, Dodged ..

[petar_83]

Wow, I didn't know it could be so bad.Only one cylinder was full of gas (the one that I was replacing the injector).I thought that there was a broblem with the starter because of that grinding noise.That was really bad noice.It scared me.I don't really know if one of the other cylinder started.Now the car seems to run OK.Is there any chance that I could wrecked something.If there is something wrong wouldn't you hear it right away. One more thing.Why even if you unplug the fuel pump fuse still there is a lot of gas in the lines?That's why the cylinder flooded.Do you usually take the spark plugs out and blow really good on starter before you put the new injector in.Is there something else you can do to prevent that? Thanks

[gr8scott72]

Well Duuh lolIf a single cylinder fired it would.Being completely full of fuel saved his motor is kinda what I meant ..

Bullet ,, Dodged ..

I don't think you could get it to mess up even if you tried.