srmitchell
NAXJA Forum User
- Location
- Mckinleyville (Humboldt) CA
Hey Naxja. I recently started looking at getting a set of new injectors, and i was too lazy to track down a jy set.
I have 4.56's, so the torque is great, but who doesn't love extra power?
I bought a set of Precision Auto Injectors, for my 2001 xj, 4.0L. They are flow matched, cleaned, and reconditioned.
They have 4 holes, bosh models. I got them on sale, and they only took 3 days from florida. Customer service was great, and the packaging was awesome.
So on to the install.
-Disconnect your battery. (Please, you're working with fuel.)
-Remove the throttle linkage, ccv hoses, and anything else in the way.
-You need to remove the little clips on the injectors, and bleed the fuel rail. (Valve at the front of the rail)
This part was simple, but the hardest was removing the connectors. All of my ev2 electrical connectors were old, and brittle. 2 of the clips broke, so be careful. Having them sit in the sun under the hood vents must not help.
Make sure you number the connectors! (The blue tape in the photos.)
The fuel rail has 4 bolts, and it lifts out. Fuel will spill, and it hard to remove from the manifold, so be careful.
Once that was out, I made sure to remove all old orings, and clean all of the fuel ports.
The new injectors were packaged in oil, so they were easy to slip back in. I replaced the clips, and did the reverse of removal.
Done! I had to cycle my key back and forth to prime the fuel, it wouldn't start at first. I also reset the PCM and replaced the spark plugs to get the full benefit.
So far, Ive noticed more power, smoother idle, and better overall engine sound. No comments on mileage, I wont know until the pcm relearns my driving habits. I was getting about 18 freeway, so we'll see.
-Columbus.
I have 4.56's, so the torque is great, but who doesn't love extra power?
I bought a set of Precision Auto Injectors, for my 2001 xj, 4.0L. They are flow matched, cleaned, and reconditioned.
They have 4 holes, bosh models. I got them on sale, and they only took 3 days from florida. Customer service was great, and the packaging was awesome.
So on to the install.
-Disconnect your battery. (Please, you're working with fuel.)
-Remove the throttle linkage, ccv hoses, and anything else in the way.
-You need to remove the little clips on the injectors, and bleed the fuel rail. (Valve at the front of the rail)
This part was simple, but the hardest was removing the connectors. All of my ev2 electrical connectors were old, and brittle. 2 of the clips broke, so be careful. Having them sit in the sun under the hood vents must not help.
Make sure you number the connectors! (The blue tape in the photos.)
The fuel rail has 4 bolts, and it lifts out. Fuel will spill, and it hard to remove from the manifold, so be careful.
Once that was out, I made sure to remove all old orings, and clean all of the fuel ports.
The new injectors were packaged in oil, so they were easy to slip back in. I replaced the clips, and did the reverse of removal.
Done! I had to cycle my key back and forth to prime the fuel, it wouldn't start at first. I also reset the PCM and replaced the spark plugs to get the full benefit.
So far, Ive noticed more power, smoother idle, and better overall engine sound. No comments on mileage, I wont know until the pcm relearns my driving habits. I was getting about 18 freeway, so we'll see.
-Columbus.
