Quote:
Originally Posted by Gasoline Fumes
I do wonder if it's running rich with less airflow. But then I wonder if there really is less airflow. Obviously there is at 5000 RPM and full throttle, but at 2000 RPM with the throttle barely open, I'm wondering if the throttle plate is more of a restriction than the disabled valves.
I was back at the junkyard and looked at the HF head. It doesn't have much of an oil retaining wall like my 16V engine. I guess with roller rockers, the cam doesn't need to sit in a pool of oil. So I could cut away the part that interferes with the cam lobes, I just need to figure out how to do it without getting metal pieces all over the head and in the oil.
|
Running rich, no. The ECM is perfectly capable of adjusting fuel flow to compensate for the lower airflow. It's when you start flowing too much air that's the problem. Don't be surprised, however, if you get random TPS code once in awhile. Just reset it and go about your day if you do.
To clearance the head, if you're SUPER careful, you can do it without pulling the head off. Stick paper towels in the oil holes, put grease on them and leave a nub with which you can pull them back out. Clean all the excess oil from the head so you end up with a clean, oil free area. Once you clearance the area you need, put a paper towel around a tongue depressor or something and spray liberally with WD40, and thoroughly clean everything in the head. Pull the papertowels out of the holes, then dump a quart or two of either kerosene or diesel to rinse everything up. If there are still metal flakes, clean them out again and rinse again. If you don't see any, clean out the fluid, pour about half a qt of oil all over the head, then change your oil.
Honestly, if you don't need your car for a day or so, it's almost easier to pull the head, clearance it, then put it back on. The whole head gasket job only takes about 3 hours if you're meticulous about it, and you can probably clearance the 8 areas you need to in about an hour or so.