I'm getting ready to replace the intake manifold gaskets on a '91 K1500/350.
I have a couple of questions I would like to try to get answered.
First, do I need to take the TBI unit off of the intake?
Second, does the distributor use an 'O' ring or a gasket to seal it? What
Any words of advice to make things go easy? I will have help, so that in
itself will make things a little easier.
Thanks in advance,
you don't have to remove the tbi unit from the intake, you just have
to disconnect the fuel lines and linkage from the tbi unit.
yes the distributor has a gasket......... fairly common GM
350 distributor gasket. You should get a new one in your intake
gasket set. You can get these from just about any parts store.
change the engine oil and filter before you start the engine for the
first time. Use good quality RTV sealant on the front and rear lip of
the lifter valley (the front and rear bottom area where the intake
mates to the engine block. I like fel-pro intake gaskets, GM even
makes some good ones too. Mark the position of the distributor rotor
button where you will be able to re-install the distributor back in
the correct position and in time. If you have to remove any spark
plug wires make sure and mark them and their position on the
distributor...(assuming you are new at this)..
Make sure you change the oil !
It's always cheap insurance when changing
an intake manifold gasket. When you pull
the manifold, inevitably some coolant goes
into the valley and possibly down into the
In our shop, we have to change the oil
and filter after any engine work like an
intake gasket replacement. No if, ands,
or buts about it.
Sounds like a good enough reason, but in my mind, it would seem like it
would be better to at least run the engine, so that whatever coolant has
made its way inside could at least be 'washed' out by the oil.
Makes sense to anyone?
when you change the intake you can spill some of the collant thats in
the intake down into the lifter valley which drains down into the oil
pan (not good for the bearings).... play it safe and change the oil
and filter. Money well spent.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.