Spark plug reading, Compression test

[babowc]

Well,since i got all my turbo parts in, i decided to do a quick compression test dry and wet.

i have to say.. they were a bit odd.

First round:take all plug wires off,unplug fuel pump fuse,un screw all plugs.

screw in tester, crank.i held the ignition for what seemed to be 4 full cranks, twice on dry.they all came to 175~180.

Second round:pour little oil, hold ignition one time for full 4 cranks.all within 220.

However, it depended on how much oil I put in as well.I poured a little more oil in one cylinder because I was lazy and didnt get somethign to measure it with.one came out with ~240.

Interesting to say the least, anyone care to chime in about this?

And.. my plugs.

I have the NGK stock replacements, and when i saw it, the tip was white, but all eles was good.Does that mean I was running in lean condition/timing wasnt set correctly/ran too hot?

My motor burns oil, i know that for sure, but if the compression test says its good.. its good, right?

I do plan on replacing the valve seals, whenever they come in

[NateDogg]

Sounds good to me!

[SloS13]

sounds good but remember even when your car is sitting, there's still gonna be fuel in the rail, so unplug the injectors too, either that or unplug the dizzy connector.

[WDRacing]

This is what I do, for an accurate compression test, the motor must be warmed up to operating temp. Pull the fuel pump fuse, then crank the car over, it may actually start and run depending on how much fuel is in the rail. After the fuel is depleted from the rail and lines then commence with the rest of the test.

Disable ignition system by pulling connectors from dizzy so you're not arcing all over the place.

Pull the #1 Plug out

Screw in Compression Tester

While holding the throttle wide open, crank the motor over 4-5 times, if your gauge doesn't hold the highest pressure, you'll need a friend to assist.

Repeat this procedure for the rest of the cylinders.

There isn't a wet or dry compression test, there is a warm or cold test. Cold will yield lower numbers. Pouring oil into the cylinder is done to see if you have bad ring lands on a particular cylinder with lower then normal numbers. If the numbers go up dramatically, then you may have bad rings, or ring lands. The oil takes up the space between the rings and ring gaps. There should only be about a capful of oil used during this test. If the compression number do not increase with oil added, then it could be a headgasket leak or a valve leak.

WD

[babowc]

yep ^thats exactly what i did and yes the compression went up depending on how much oil i added.this morning, i was smoking the entire ~1mi. drive to school, lol.

anyhow.. what do the spark plugs suggest? just running lean?