no compression in one cyl and its leaking out the intake valves

Crazymays77 · July 02, 2011, 08:19:43 PM

ok just got this motor back together had to get a head for it. i lapped the valves with the grinding compound and everything looked great. but once i got it all back together and did a compression test i have 0 on 1 cyl. so i blew air into the cyl and its coming out the intake. so i plan to pull the intake cam and see if i can get it to seal up if so then i'm guessing something is wrong with the cam? whats your opinion?

OHEARN.2012 · July 02, 2011, 08:29:40 PM

idk could it be a bad lifter or valve spring maybe broke valve??

Crazymays77 · July 02, 2011, 08:35:15 PM

i dont think its a broke valve i turned the motor over and looked down the spark plug and i can see the intake valves when they are open. im thinking its a lifter or valve spring. going to pull that cam off and see if it stops leaking then go from there. just dont want to have to pull the head and get a new gasket again.

wonder if i can use the head gasket still?

OHEARN.2012 · July 02, 2011, 08:36:56 PM

hmm idk i know on some gaskets its a one time deal if ya need help this upcoming week i could come over

Jjay78 · July 02, 2011, 08:37:08 PM

Quote from: Rescue Rig/Jacked Up Geo on July 02, 2011, 08:35:15 PM
i dont think its a broke valve i turned the motor over and looked down the spark plug and i can see the intake valves when they are open. im thinking its a lifter or valve spring. going to pull that cam off and see if it stops leaking then go from there. just dont want to have to pull the head and get a new gasket again.

wonder if i can use the head gasket still?

get a new gasket, their compression sealed why risk your motor over one gasket?

Crazymays77 · July 02, 2011, 08:40:21 PM

thats true and its only 40 bucks. just have to find one again. went to 2 different auto zones to find one.

Jjay78 · July 02, 2011, 08:41:27 PM

try advanced auto?

OHEARN.2012 · July 02, 2011, 08:41:52 PM

screw auto zone ive only had bad luck with them i go to advance auto parts they are by far best people to deal with

rangerwheelinmike · July 02, 2011, 08:46:19 PM

if you havea felpro gasket you could reuse it if you dident run it.

Crazymays77 · July 02, 2011, 11:05:40 PM

there felpro gaskets. well i pulled the cams and it stopped leaking so i'm thinking lifter or spring issue. I made a air fitting with a spark plug so i can put air to that cyl and hope to take the springs out. maybe there is something under it or something and its causing it to leak. lets hope anyways.

Jjay78 · July 02, 2011, 11:39:57 PM

good luck

4x4xdodgeman · July 03, 2011, 12:44:37 AM

is this on your kia? not knowing how kia set up on the valve train, dose it use any type of lifters that mite be pump up holding valve open, until its running to comperess the lifter.

Crazymays77 · July 03, 2011, 01:20:12 AM

yes the kia. its only one cyl 2 intake valves. why would it only be on one cyl? idk maybe thou could be anything.

rangerwheelinmike · July 03, 2011, 01:59:49 AM

should have bought a ford

reaper1986 · July 03, 2011, 02:28:02 AM

should have bought a chevy

Jjay78 · July 03, 2011, 11:04:37 AM

interested in what and how ya fix it

Crazymays77 · July 03, 2011, 11:29:17 AM

ok I'll post it up when i figure out what the hell is going on.

Crazymays77 · July 03, 2011, 01:26:03 PM

well I pulled the cams again this morning. i'm checking the lifters and by what i am reading if I can move the plunger on the lifter its bad. so i went thru all the lifters and replaced them with ones that dont move. but i dont understand that since if the cyl i am having problems on has bad lifters then wouldnt it open late and it wouldnt leak right? oh well gonna go see what happens now with the cams in.

OHEARN.2012 · July 03, 2011, 01:39:58 PM

is it always leaking? from my knowledge if it opens late it closes late. where it staying open longer then others and when piston move ups for compression since its bad it leaks out??

Crazymays77 · July 03, 2011, 01:51:46 PM

it always leaks if the cams are installed. I rotated the motor over by hand and would blow air in it with the compressor here and there. always leaks until i pull the cams off then it stops leaking. I just thought about it more and I'm thinking maybe one of the lifter plungers is stuck out so its pushing the valves all the time. replaced them with some other ones i have and going to see what happens. wish me luck.