What does the orifice tube do on a Chevy Tahoe?

The orifice tube is a restriction that lets the system have high pressure on one side of it and low pressure on the other. It also has a screen on it to act as a filter to catch any metal particles, but it doesn’t catch them all.

What are the O rings on a Delco fuel injector?

These larger O-rings are sometimes distinguished by color. The AC Delco versions are blue for the 0.540-inch O-rings on the top while the larger 0.565-inch bottom O-rings are red.

Where is the expansion block located in a Chevy Tahoe?

With Front and Rear A/C, the Expansion Block/Orifice Tube is located in a Y-shaped junction block in the tube between the condenser and the front evaporator.

How to install fuel rail O-rings on Chevy Tahoe?

5.0 out of 5 stars Use a dab of motor oil to help reinstall these o-rings in your fuel rail! Works great after that. These are the 3 O-Rings that fit my 2000 Chevy Tahoe 5.3L engine. There is a fuel rail that crosses over top of the engine. The cross-over fuel line has a torx screw with a hold-down bracket keeping them secure.

Are there any Tahoe Z71 flex fuel o-rings?

2002 Tahoe Z71 Flex Fuel. These are an exact replacement to the originals. They fit perfectly and aren’t leaking fuel. They also might be the biggest ripoff on auto parts that I’ve ever paid for. It’s not just Amazon, these are a ripoff everywhere. $22.39 for 3 small O-rings….what a joke!

What is the fuel line O-ring on a Silverado?

I have a 05 Silverado. I had a fuel leak at the connection between the fuel cross over bar and the fuel rail on the passenger side. this is the kit you need to repair it. the small o-ring is for the fuel line connection to the cross over bar. the two larger O-rings are for the cross over bar connection to each fuel rail. 2002 Tahoe Z71 Flex Fuel.

What happens to the O-rings on the fuel rail?

The O-rings seem to swell/expand when in contact with fuel (likely to make the seal) so motor oil works the best to get the new ones re-seated. Careful not to drop the o-rings once coated in the oil, they are slippery & kind of expensive! A picture of my drivers side OLD O-rings are included with this review. The new O-rings matched up perfectly.