Weekend update! Following the Dupuis method, I had a busy weekend. First up, I checked and cleaned the intake hose, cleaned the airflow plate, and checked to make sure it was properly arranged. Air filter was finally changed. The old one was OILY. Pretty sick.
I then got out some bottles, and ran the described checks on all the injectors. #1 and #2 both had slightly off spray patterns, so they were both swapped. #2 still was slightly uneven, but appeared within spec. None of the injectors leaked at all. When the main pump first came on and the system was pressurized, they squirted briefly but shut right off. At full injector flow, all but one of the injectors squirted the same amount over a 20 second test. #2 was slightly less, but it was likely no more than 10% less, which is within the manual parameters. Over a 1.5 minute low flow test, all injectors were the same. All is well.
I then checked the cold start. It doesn't leak, and the spray pattern is perfect. When cranked in a +15 degree garage, the injector only came on for about 2 or 3 seconds, which doesn't seem like enough to me. I may swap the TTS at some point, but I'll try and test that separately.
Craig was very generous amidst his hectic work schedule to help me with my valvetrain on Sunday. I had a new valve cover gasket, so we pulled everything apart. LOTS of rust on all the components. Everything was washed and scrubbed, the valve cover was painted, and then Craig ground the lifter thingys, put it all back together, and reset all the valve clearances. Most of the pieces were in good shape according to the doctor.
Next was the compression test. Numbers are as follows: #1 -120, with 4 squirts of oil into the spark plug hole, 142 #2 -130, 150 #3 -115, 130 #4 -125, 148 This engine is low compression, but I'm guessing these numbers aren't great.
The doctor informs me this discrepancy is due to worn rings. This would also explain the frothy blow by. The block oil separator was pulse blowing a fair bit when disconnected.
At any rate, the cars runs, well, pretty much the same after all this. There is more power down low, but less up high. It still starts like crap, and won't idle above 200 rpms for the first 20 seconds, and then the idle gradually increases. Once warm the idle settles at about 1100 rpms. Its set that high so the car will actually run when cold.
Matt, yep, I've been replacing any worn vacuum hoses, and looking for leaks everywhere. The intake hose looked good. All injector holders are tight, and the injector seals are all brand new. I must admit the seals don't seem all that tight, but they are the stock part. I have no idea where to check next. It feels like its the CPR, but again, I've changed that a few times to no avail, so I'm just not sure what it could be. Meh.
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