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Need help please removing passenger side lower Fuel Rail cover on a Z51
I have seen other post asking for help on this, but have not seen an answer that works. I am trying to remove the lower fuel rail on the passenger side (I believe it's referred to as the Valve Rocker Arm Cover).
The Positive Crankcase Ventilation Hose has to be removed first, and that is what I have so far been unable to remove.
Picture of fitting from above.
There was a post about twisting the connection counterclockwise for the two plastic tabs to line up and then pull straight out. I have not been able to get that to work.
Has any one been successful on removing this from a Z51??
This is what happens when others have just tried to pull it straight out. One or both of the tabs break off.
I believe you are talking about the manifold cover that is underneath the fuel rail cover on the passenger side.
I have removed mine to have it custom painted in the body color.
There is a long plastic part/rod that runs along the top of the manifold cover.
Near the bulkhead to your left when looking at the engine from the passenger side is a coupler that you simple press the gray pins, That releases the rod and you can gently pull it out. Then simply lift over the plastic rod to the right .
There are 2 or 3 screws that need to be removed in order to lift out the manifold cover.
I also have had problems with this exact same fitting and have yet to get it removed. I have some painted parts from RPI Designs that I have been unable to install for 6+ month due to not being able to remove this fitting.
Most people seem to says it's a crap shoot whether or not you can remove it without breaking it. I'm not willing to take that risk.
I have an appointment with my dealer next week for an oil change and I'm going to ask them if they know of a trick. Otherwise I guess I'm stuck with some unused parts.
I believe you are talking about the manifold cover that is underneath the fuel rail cover on the passenger side.
I have removed mine to have it custom painted in the body color.
There is a long plastic part/rod that runs along the top of the manifold cover.
Near the bulkhead to your left when looking at the engine from the passenger side is a coupler that you simple press the gray pins, That releases the rod and you can gently pull it out. Then simply lift over the plastic rod to the right .
There are 2 or 3 screws that need to be removed in order to lift out the manifold cover.
Thanks for the reply nmvettec7. Not sure why your not seeing my photos. They show up for me. Do you have a Z51?? What your saying does not match what I am trying to disconnect.
Thanks for the reply nmvettec7. Not sure why your not seeing my photos. They show up for me. Do you have a Z51?? What your saying does not match what I am trying to disconnect.
Not sure why I can't get the images. I have attached an image I found of the Z51 engine bay.
I see that your Z51 has two other hoses connected other than my 1LT model. Are these what you are referring too?
Unfortunately I cannot help. I am sure that it takes a special tool and that perhaps someone in the Tech Section of the forum can help.
Yes. It's the fitting to the right of your arrow that goes into the center of the lower fuel rail cover. Only dry sump systems (Z51 & Z06) have that fitting.
Just got back from visiting with Cavender Chevrolete Service Department in Boerne, TX. Got to talk with 2 of their Corvette mechanics about the problem with the plastic tabs sometimes breaking off when the Positive Crankcase Ventilation Tube fitting is removed from the Valve Rocker Arm Cover assembly. They knew it was a problem and said that they often break one of the tabs off themselves when removing the fitting. There is no special tool or procedure to remove it. Just try to pull straight out with constant pressure and slight twisting side to side. One thing they said helps is if the engine (plastic fitting) is hot (makes the plastic less prone to breakage). I then asked what they do if a piece breaks off and falls down in the opening. I was surprised by their answer. They try to fish it out if they can see it, but if not they just leave it in there. The more experienced of the two who has had 2 LT1 engines apart said that there is no where for the little piece to go that would hurt anything. From the small chamber that you can see in the opening, there are 2 screens between that and the rockers, valves, etc. I will be interested to hear from other forum members after they check with their service departments to see if they get the same answer.
Last edited by USMCVETC7; 04-18-2015 at 02:50 PM.
Reason: correction
For what it's worth, I went to my dealer this morning for an oil change. I talked to the tech and told him what I was trying to achieve and asked if he knew how to deal with it. He said he hadn't personally tried to remove that fitting yet but could probably figure it out. I warned him to be cautious and mentioned that it seemed to be 50/50 as to whether or not the fitting would break. He ignored my warning and pretty much walked up to the car and pulled the fitting straight out with just a little wiggle along the way. Much to my relief nothing broke. He said that the engine being warm was definitely the key.
The bad part was that I would have to repeat this feat. I just brought the car back to my shop, popped the hood (engine warm) and gave it a little wiggle and it came right out without breakage. I'm going to let everything cool down and then I'll swap out the engine covers.
It really does seem to be a game of chance, but I do believe that the engine being warm is a huge factor.
For that it's worth, I went to my dealer this morning for an oil change. I talked to the tech and told him what I was trying to achieve and asked if he knew how to deal with it. He said he hadn't personally tried to remove that fitting yet but could probably figure it out. I warned him to be cautious and mentioned that it seemed to be 50/50 as to whether or not the fitting would break. He ignored my warning and pretty much walked up to the car and pulled the fitting straight out with just a little wiggle along the way. Much to my relief nothing broke. He said that the engine being warm was definitely the key.
The bad part was that I would have to repeat this feat. I just brought the car back to my shop, popped the hood (engine warm) and gave it a little wiggle and it came right out without breakage. I'm going to let everything cool down and then I'll swap out the engine covers.
It really does seem to be a game of chance, but I do believe that the engine being warm is a huge factor.
Thanks for the info. Good to have some first-hand experience with this.
I know this is an old thread but....does anyone know the part number to replace the part if it is broken? I have not had any luck finding a part number.
I purchased a replacement for my 2014. I can get you a part number tomorrow if you still want it.
It may be possible to wrap a small piece of wire around the base and tighten it carefully. This would squeeze the tabs in slightly allowing to rock it side to side for removal.
I purchased a replacement for my 2014. I can get you a part number tomorrow if you still want it.
It may be possible to wrap a small piece of wire around the base and tighten it carefully. This would squeeze the tabs in slightly allowing to rock it side to side for removal.
04-16-2015, 09:10 PM
Need help please removing passenger side lower Fuel Rail cover on a Z51
