quadnie

I doubt you have a bent valve.. you would hear it. Plus how did it just bend? Timing belt give out on u?

You could possibly have a cracked valve or just a blown valve seal on number 3. Go ahead and perform the compression test again and then squirt some oil down number 3 to see if the compression jumps back up. Basic functions of a compression test.. will tell you if the seals are bad or if it's part of the valve train.

-ry

fred

Nice tip, I will try that! Thanks!

quadnie

I would assume that you are executing the compression check properly and following the basic "rules". If you do have a bad ring then adding oil the compression will slowly jump up. There are many variables involved in performing the check.. certain ways the meter acts will mean certain things are wrong with the motor. Check your chiltons/haynes manual for info on what to expect.

fred

I followed these rules: http://www.c-speedracing.com/howto/c...t/comptest.php Never knew about adding oil. But sounds logical.

quadnie

well they kinda followed all the rules.. they could have made your life easier by telling you a few steps to make this a one person job. Example: Block open the throttle with a screwdriver instead of having someone floor the pedal. Use a damn remote starter, well worth the $10 it costs at the local parts store.. I love my remote starter and use it all the time.

They didn't go into any detail as to how the gauge will react to certain things wrong with the motor. Like if it pumps up good then starts to fade down then it's usually the seals.. or if it's very slow to start pumping up then it's the rings. Like I said, go pick up a chiltons/haynes manual (for any car) and read what they have to say about compression testing. If you can't do that then I will search around here for a manual and type in what they suggest for compression testing later today.

fred

I have no chiltons/haynes manual. Have to order one some day. It would be appreciated if you would type here what they say in the manual.
Thank you.

quadnie

I have to dig up a manual, I'll do it later for you.. try searching around google for how to perform a compression check and it may have all the specifics in it.

For some reason I think I've already typed it all out in the past, maybe I'll dig thru my 3000 posts to see when I talked about it.

fred

Thank you

quadnie

I have not forgot out you, I'll get to finding the haynes manual tomorrow.. got too busy today.

EDIT: I'll get to it in the evening of today.. damn days/nights are all mixed up when you don't sleep

fred

The new day in my country already started a while ago. Couldn't wait so I went busy again.

What I have tried:

First I tested the compression again of nr #3 and some other random cyl to check if nothing is wrong with the tester.

Ok #3 is still 160psi

I removed the valvecover and pour some oil on the intake valves of #3. Put the valvecover back on.

#3 is Now 170psi! A bump of 10psi!

Removed the valvecover again. This time I pour oil on the exhaust valves. Put the valvecover back on.

#3 is stil 170psi

I figured to check the pistonrings if I would pour some oil on the piston thru the sparkplug hole.

#3 is now 270psi! Can't be right So I waited a couple of minutes and it was still 270psi

Ran engine for a couple of minutes. Lots and lots of smoke ofcourse. I ran the engine untill no smoke came out when running stationairy.

#3 is now 195psi

I made the car drive ready. And drove it for 10miles.

Did the compression test again.
Back at 160psi


What do you think? Intake valves or valveseals of the intake are leaking?