So I have been reading about the plenum for a while now. Everyone seemed to describe it as having really horrible gas mileage, check engine lights, and absolutely eating oil, so I didn’t think it was an issue for me. I go through oil, but maybe a quart every 1000 miles. I get about 11-12mpg. Not great, but not terrible...
Last night I was reading on Hughes’ site how to easily test it by unplugging the pcv hose and seeing if it has vacuum with engine running. Sure enough mine has it. So I just ordered their plenum kit. While I’ve got it pulled apart, I’m going to replace the timing chain, thermostat, water pump, cap/rotor, and the lifters. I dread the project, but I can’t wait to see how well it runs! I think it has gradually lost power over the years, and I’ve just gone easy on it thinking it’s an old engine that I don’t want to push too hard. I have a feeling I’m going to be very pleased when it comes back to life.
How many miles in your engine?
I’ve read about the plenum gasket also - but no way would I try this repair myself! Watched a video.[emoji38]
I don’t burn/lose oil so maybe mine is not a problem. I do have low power but always attributed to high mileage engine.
When I’ve mentioned it to mechanics they don’t recommend putting ANY work into my 323k mile engine. Kind of frustrating.
I’ll be interested to hear how you come out!
Sent from my iPhone using Tapatalk