advice on removing injectors
taking them out is easy. there are 2 bolts per fuel rail that have to come out. then, just pull up on the rail to pop them loose. they are only secured by orings. then each injector has to have its elec connecter removed. also very easy. i use a very small flatblade screwdriver for that.
FYI - You don't need to use a screwdriver to remove the connector from the injector, you just squeeze the retainer clip to release the connector.
First things first:
By what standard have you determined the injs are the problem??
If they do need to come out:
1. Blow the dirt/crud off the intake, around the inj base.
2. If they are stuck in the intake, shoot a little WD around them, and let it sit for a bit.
By what standard have you determined the injs are the problem??
If they do need to come out:
1. Blow the dirt/crud off the intake, around the inj base.
2. If they are stuck in the intake, shoot a little WD around them, and let it sit for a bit.
Thread Starter
On The Tree
Joined: Dec 2005
Posts: 147
Likes: 1
he told me it could be a couple things:
1. A Bad MAF sensor
2. 1 or more bad injectors
3. A bent valve due to piston to valve contact.
4. 1 or more bad spark plugs or wires.
When we were down there we cleaned the MAF and it helped a little. I put NKG TR55 plugs and MSD wires on the car last summer (less than 4K ago)... but i didn't put the heat protectors around the wires. None of them are melted but my tuner said they could be messed up on the inside. I know exactly how to test them, but i've been sick and bed ridden for a week now.
So i'm going test all the wires (maybe check the plugs too... 5 and 7 are really hard to get to
) and i will remove all the injectors to have them cleaned and flow tested. That should leave just the MAF and a possibly bent valve. i'm sure fixing/replacing a bent valve would be one expensive and difficult job. what do you guys think? Trending Topics
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Verdad Gallardo Thread Starter
On The Tree
Joined: Dec 2005
Posts: 147
Likes: 1
we never checked fuel pressure and if we did it wouldn't have told us anything about the injectors because it's measured at the shader valve. He knew there was insufficient fuel because it was running lean. I can't remember all the details but he showed me graphs and stuff on his laptop and explained where things were out of wack. I don't really know anything about tuning or what data logs are.
Huh?? "we never checked fuel pressure and if we did it wouldn't have told us anything about the injectors because it's measured at the shader valve. "
That's exactly where you check the FP. Fuel psi off, WILl affect the inj flow.
Just because he said it was lean, DOES NOT mean the injs are at fault.
If he was "tuning", found a problem, and didn't look at the Fp, find another tuner... Maybe the next 1 will be closer to home.
That's exactly where you check the FP. Fuel psi off, WILl affect the inj flow.
Just because he said it was lean, DOES NOT mean the injs are at fault.
If he was "tuning", found a problem, and didn't look at the Fp, find another tuner... Maybe the next 1 will be closer to home.
Thread Starter
On The Tree
Joined: Dec 2005
Posts: 147
Likes: 1
"we never checked fuel pressure and if we did it wouldn't have told us anything about the injectors because it's measured at the shader valve. "
That's exactly where you check the FP. Fuel psi off, WILl affect the inj flow.
Just because he said it was lean, DOES NOT mean the injs are at fault.
If he was "tuning", found a problem, and didn't look at the Fp, find another tuner... Maybe the next 1 will be closer to home.
That's exactly where you check the FP. Fuel psi off, WILl affect the inj flow.
Just because he said it was lean, DOES NOT mean the injs are at fault.
If he was "tuning", found a problem, and didn't look at the Fp, find another tuner... Maybe the next 1 will be closer to home.
TECH Apprentice
Joined: Sep 2006
Posts: 328
Likes: 3
since you have no idea what the fuel pressure is, no one will be able to help you. If you cant get enough fuel, pressure is the first thing to check, you cant just start randomly changing parts and hope to fix it
Thread Starter
On The Tree
Joined: Dec 2005
Posts: 147
Likes: 1
i understand what you're saying but i'd bet my life that it's at 58 psi. when i bought the tester kit and hooked it up, gas sprayed out of one of the connectors on the kit and got in my eye and all over the car. i couldn't get it to work and can't find a different brand. It can still be at 58 psi and the injectors can be bad.
