Hey finnaly got around to doing a comp test and didnt have any god news. from what i heard they should be at least above 150 right? and 180 is about right. BTW its a '90 LS with 117k
well i figured out why it has no balls… #1 100 #2 90 #3 100 #4 95
Wouldnt the car be running shitty with it that low? because it seems to run ok it just has no balls and when you shift from like D to P when you hit park it will rev down to about 200 and almost die then bounce up to 1000 then bounce back down and do that about 10 times then stop? also noticed today that when you floor it it would leave the car behind you smoked out looking like you were on a dirt road. All of this happened after the first valve adjustment we had. then the re-adjusted them and still ran like crap so we had the dealer do it?
Any ideas at al would be awsome…
TIA
Chris
Sounds like it’s time for a B16 swap. It also sounds like whoever had the car before treated it like sh*t, because that is pretty rare for a Honda engine.
First thing you need to do is get a leakdown test done. Not a compression test, this is different. In this test, the mechanic will pump compressed air into the cylinders to see where the air is escaping. This test will determine whether it’s your valves, piston rings, or head gasket that are bad.
I can almost guarantee from what you said that your rings are bad, in which case you can either rebuild the engine, or get a used engine to swap in. Unless you’re planning on building a high-output LS motor, I would get a motor to swap.
Now it’s possible that your valves are all bad(but VERY unlikely), in which case you could get away with rebuilding the cylinder head, or swapping one in.
With the low cost of a B16a swap, it’s a great excuse to get a VTEC.
And the smoking that you’re talking about is caused by:
Bad piston rings allowing oil into the combustion chamber, which then gets burned.
Bad valve guide seals allowing oil into the combustion chamber, which then gets burned.
All the other symptoms you are describing are in line with having low compression. A valve adjustment won’t make a bit of difference when you have that bad of compression.
The key is getting that leakdown test done. That will tell you what to do next.
In the mean time ( before you can really do anything with your motor) pour some Engine Restore in. I put it in mine and it helped. It’s used mainly for decompression probs.
Hey thanks for all the info right after i wrote that question i read something on breathers lowering compresion pretty badly. well i had one on the valve cover and everytime a compresion stroke would come up it would puff out dust… Think that breather could of had something to do with it? I already took it off and threw it away. didnt seem to help much yet but i figure the car has to reset it self with all the sensors… all of this started about 2 days after i put it on there.
Chris
To answer your question: No. A breather on your valve cover has absolutely nothing to do with compression. :tsk:
No more need to do a leakdown test, either. The fact that your engine puffed dust out of the breather on the compression stroke confirms that the piston rings are definitely BAD! Repeat: Engine is Shot! Time for a REBUILD!
The crankcase, which is what that breather is for, should not be pressurized at any time. If it is, as yours obviously is, that means that air (burnt gases, if the car is running) is blowing past the piston rings on the compression stroke. (BAD RINGS).
After going by the piston rings, and leaking into the crankcase, the air then shoots out your crankcase vent, or “valve cover breather” which causes that “dust” you’re talking about.
And there aren’t any sensors that have anything to do with compression. Sorry to be the bearer of bad news
