Quote:
Originally Posted by dhollow2
Thanks for the video link. I thought about a smoke test but don't have access to a machine. The cigar method looks easy so I'll probably give it a try. I really don't expect to find a leak, though. I've been over every possible leak point and mating surface with both a propane torch and carb cleaner and only found the small leak at the IMRC bushing. I also isolated the aux vacuum system, brake booster, egr valve, and evap solenoid to no effect. Overall system vacuum is steady at 20 inHg with appropriate response to the throttle. Fuel pressure is good at 33 PSI. All of the spark plugs looked good and are correctly gapped. The van idles smoothly and accelerates with good power and no hesitation or stumbling.
I pulled the intake plenum and the EGR ports were 90+ percent clear. I was surprised to see that the sleeves on the isolator bolts were BLACK. The van had the isolator bolt TSB performed by a dealer at 36k miles and I thought the updated sleeves were supposed to be GREEN. I haven't seen any posts about repeated failure of the isolator bolts, but since they are black I'm wondering if the TSB was done with the old level bolts. Can anyone confirm if the upgraded bolts are always green, or could they be black?
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I checked the fuel filter on my car, looked like the original, and I had a shop and others supposedly replace numerous times. It did not look like it had ever been replaced, at all. Mechanics get pressured to lie by their bosses a lot.
That having been said, I have the 2-year warranty Resniz bolts, and have read numerous posts here back to 2005, and all state they are green. BTW, I have the upper crankcase popping sound, and prior posts to here seem to indicate even if the isolator bolts are replaced, especially if it is early in gas mileage, they might have to be replaced again.
They are always green. Mine looked green, I am going to replace them tomorrow using he leckemby procedure. Another thing that goes, even in new replacement parts, is the coil pack.
HTH!