V6 4.3L plenum gasket?
chembrad
11-12-2004, 12:15 PM
Is there any tips/tricks/problems associated with replacing the plenum gasket on the 4.3L vortec engine?
BlazerLT
11-12-2004, 10:19 PM
Nope, take off the old and replace with the new.
Be ready for seeing leaks if you are taking off the upper plenum.
Passenger side washed clean = Injector shot.
Driver's side clean = internal fuel lines shot.
Do not ignore them and just replace the gasket.
Be ready for seeing leaks if you are taking off the upper plenum.
Passenger side washed clean = Injector shot.
Driver's side clean = internal fuel lines shot.
Do not ignore them and just replace the gasket.
troubles789
11-14-2004, 10:53 AM
No tricks here, straight foward as it gets.
BlazerLT
11-14-2004, 12:20 PM
Also, make sure you torque down the gasket to the recommended level and do not over toque them or they will snap and you will then be in real trouble.
chembrad
11-15-2004, 03:19 PM
do you use gray ATV (high torque)? A thin layer applied to both sides of the gasket (just like other gaskets)?
BlazerLT
11-15-2004, 03:23 PM
Nono.
You just lay it down with the green sealant bead facing up.
Nothing is needed for install. Use no other sealants. The gasket comes with its own already applied.
You just lay it down with the green sealant bead facing up.
Nothing is needed for install. Use no other sealants. The gasket comes with its own already applied.
chembrad
11-15-2004, 03:27 PM
Actually I am removing the plenum cover in order to assess the CPI and other systems. This truck was only getting 8mpg. So I'm thinking major fuel injection problems.
Is it possible that the FPR in the CPI is the cause of leaks on the passenger side? That is a much cheaper repair. (~$60) Or is it better to just go ahead and replace the whole CPI (~$250)?
Is it possible that the FPR in the CPI is the cause of leaks on the passenger side? That is a much cheaper repair. (~$60) Or is it better to just go ahead and replace the whole CPI (~$250)?
chembrad
11-15-2004, 08:27 PM
Do you know if Lendertech replacement pressure regulator (CSFI) is worth the trouble?
BlazerLT
11-15-2004, 09:07 PM
Don't just replace the FRP on the side of the injector, replace the whole thing.
The cheapest place to get the injector is off of ebay.
Like here:
http://search.ebay.com/cpi-injector_W0QQsokeywordredirectZ1QQfromZR8
Also, It is best to replace the nut kit while you have everything out.
The nut kit is prone to leaks as well seeing it was made of an improper platic that gets too brittle and breaks.
The cheapest place to get the injector is off of ebay.
Like here:
http://search.ebay.com/cpi-injector_W0QQsokeywordredirectZ1QQfromZR8
Also, It is best to replace the nut kit while you have everything out.
The nut kit is prone to leaks as well seeing it was made of an improper platic that gets too brittle and breaks.
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