I'm starting a new thread because I need some serious help within th enext week or so.
There has been another turn in the plot.
I took the car to the $tealer$hip for a diagnostic yesterday morning. The emissions still fails but is MUCH MUCH lower. Here's the read-out:
emission reading limit
HC @ idle 336 220
CO @ idle 3.89 1.20
HC @ 2.5K 184 220 <----PASS!!!
CO @ 2.5K 1.94 1.20
All I've changed since the first inspection is the spark plugs, the O2 sensor and the valve cover gasket. After going to the Dealership (the guy was actully pretty helpful in explaining stuff) I now know I have a leak in my vacuum lines. I know that's not an uncommon problem but..as usual, "any advice you might have is appreciated."
do you know where I can find a half-way decent DIY on taking the manifold off? The bentley manual doesn't actually do a very good job with this one. It sort of rattles off a bunch of different harnesses and shit to remove from under the manifold but doesn't have a picture to accompany what most of them look like.
I feel like I"m so damned close to passing inspection that changing these hoses out would probably do the trick.
Also, where did you pick up the new hoses? All I can seem to find is by-the-foot hose that's sort of generic.
i went to the dealership,i was desperate to finish the job,that foot hose sucks its not reinforced,when i took the manifold off i labeled everything with tape that had numbers on it, its probably harder to take off the six cylinder manifold than the four, but i really dont know whats under the six cylinder manifold i dont want you to take it off in vain, sorry
let me know about those tips and tricks for sure.
I'm certain now that the first two times, my car was not warm enough. The last time at the dealership it seems it was closer to being warm enough. I have a hunch that if i fix those vacuum lines this week and drive it long enough for the inspection, it'll actually pass. If not, there are other ways....
Is your car stock? How old are your cats? They could be gone. Have you had an oil change and how is your air filter? Maybe try one of those help pass smog additives? If your cats are out you cant really do anything but change them out or go to a $100 guaranty pass station.
I don't know of any $100 guarentee pass stations here in Mass. I'm pretty sure that my cats are not shot. After having it checked out by a tech, he said I have a vacuum leak. My spark plugs are covered in carbon, so I assume this means I'm running rich. I'm fairly close to passing inspection....
Howdy y'all, I'm in the same boat right now with running rich. What vacuum lines would you need to inspect? I recently performed a hot soak, removing the vacuum line from the brake booster to the intake manifold. I put it back on with a fresh hose clamp, but should I be looking for anything else?
well, the problem with a vacuum leak is that it's hard to tell where the leak is coming from. I'm going to change a good portion of the lines and the clamps and connectors and see what happens. After that, it's sort of just a guessing game from what I understand. Unless anyone has any insight.
Does your car idle and run fine? If it does its probably not a vacuum leak but a cracked intake manifold. Vacuum leak would make your car run horrible. I have a hissing type of sounds on mine and I found out that it was cracked intake manifold. It is plastic after all.
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