Fuel injector o-ring size

Are they loose on the injector? Put some transmission fluid on the o-rings, they'll slide in, but it'll take more force than you think.

Steve

I'd either get the correct ones from GM, or just re-use the old ones. I re-use the old ones 90 percent of the time. Unless they have a nick in them....they will be fine. Make sure you lube the o-rings and the holes they go into.

Ian

Inspected and cleaned the original o-rings today. Put them back on the injectors. Now the injectors very easily slide into their holes even without lubrication. They are almost free floating. With the rail bolted down the injectors move easily when I put my hand on the fuel rail and press down. However, they were plenty tight when I took them out. A good deal of force was required to get them to pop loose.

Those FelPro replacements just will not go down in the hole without mucho, mucho force, and when they do finally go in most of them lose a chunk of the o-ring material in the process.

What the heck am I up aga>

Last time I replaced my of-rings I bought them at the dealer. $25CDN for a full set.

Steve