Triumph Repair: Engine, vent pipes, vent hole


Question
I am a "mechanics son". So, through logical and common sense research I have restored and maintained cars and trucks. So if I sound a little "green", I'm a little bit guilty.

I took the compression readings with all plugs out and one cylinder at a time with a standard compression guage. Each cylinder was 149-151psi. I guess that means "dry"? I will try this weekend as suggested with a little oil in each cylinder.

Three vent pipes go into one carbon canister. One from the valve cover, one from the transmission, and one from the carb. There is no hose from the valve cover to the carb (Weber downdraft). Only the carbon canisters remain from the emissions system. All else has been removed.

There is no oil pumping out the dipstick hole, only through the valve cap vent hole. It's slowly making a mess.

I suspected valve guides on cylinder #3 too.

Thank-you so much for your input. I have fallen in love with this car, and intend to collect another more originally complete model. And, because the wife doesn't share well!

Sam  

Answer
Sam,

Sorry for the delay, this one slipped through the cracks.

When doing a compression test... just cranking the engine and taking a reading is considered "dry".  Adding oil to the cylinder before taking the reading (just a bit) is a "wet" reading.  If there's a big difference between dry and wet readings then the rings are worn.

Normally the transmission vents to the atmosphere, I haven't seen a trans vent hole plumbed into the emissions system before.  

Cheers,

Jim