Recent content by billr

Have you taken compression readings yet? Does this engine have VVT with that "phaser" thingy on the exhaust cam? It still isn't clear to me if the engine is running too poorly to go over 30 mph, or whether the trans is not shifting properly into higher gears. Or, is something dragging...

"hmmm, wondering if I should even jump into this one." ^^^^ +1 If the engine revs up OK, but the car doesn't move at a comparable speed, then it seems like it is a trans problem for sure. You need to use a scanner that will show trans live-data, to avoid throwing even more parts at it. Check...

Any codes set? Are you using live-data at all? When you say "won't go over 30", do you mean the engine won't rev up normally, or that the trans is stuck in a low gear??? Use a tach to correlate engine rpm to mph so we know which it is.

Oh, it wasn't found visually, you can't see most of that stuff under the intake. My understanding is that he was wiping off something with a paper-towel, and the tail of the towel suddenly got "slurpped up" by the leak! The repair was done mostly by feel, aided by removing the EGR valve. Luck...

Actually I was more of a (poor, turns out) advisor. This is my son's truck, he was doing most of the work and was the one that found the leak. It is a remarkably hard beast to work on, considering all the room there is under the hood of a full-size PU. That inlet plenum/runner assembly covers...

I think this one is done! I did check the FP gauge against four others. The gauge we are using is probably reading a bit low, and reads right at 40 with the vac line off, so actual FP must be above 40, in-spec. A lot more exploring, testing, and reading was done, but the culprit turned out to...

Clean the ring, grip it in the jaws of a caliper as if measuring the ring thickness, and hold it up to a light source. You can see even a .001" gap that way, the side with the bevel/taper will be obvious.

What is the brand and P/N of the carb? Are these needle-valves for adjusting fuel trim? Those are usually not to tight, if you can tease them out by any means, even if tedious, then I would cut a slot in the head to use a simple screwdriver. If you can't remove them, maybe cut that slot in...

Do you have a question or concern about them?

I would stick with Dex3 there are some GM transmissions that are not as happy with Dex6 as the Dex3 they originally came with. I don't think the 4L60E is one of those, but why chance it? The two are completely compatible, so no worry if there is some of one or the other left in there

My opinion? The compressor is getting worn, but you could put a lot of time/money into chasing this down. I would let it be, as long as it still cools satisfactorily, until the problem is more identifiable. I would also be sure to not start up the A/C until idle is down, to avoid the ugly...

Did this noise just start recently, with no recent work on the A/C system? It is unlikely (impossible?) that any "extra" oil got into an operating system. Yes, to get oil out you have to open the system up to some extent, maybe disconnect components to drain all and then re-fill with specified...

I don't think that vehicle is sold in our North America market; I doubt we will be able to help you.

Not what I call "clean looking", more of a "scab-on" patch!

Is it drivable with that code set? OP, what is you skill level and do you have both an electrical multimeter and a scanner that shows live-data? This problem may even require a "dealer-type" scanner. First step would be to get a schematic of the circuit. Then, visually check all the...