sparkyboy Posted September 21, 2016 Share Posted September 21, 2016 Hey fellas, my 95 ej22 that is in my 86 has ZERO compression on cylinders 2 and 4. I installed new head gaskets and valve seals. The timing belt seems to be installed properly, all notches lined up, 44 and 40.5 teeth! Even if it were off a tooth or two, I should have some compression am I right? The left bank reads 160 psi for both cylinders. I'll take the valve cover off soon and check the cam, springs, clearances etc... Any ideas? It seems like a valvetrain issue, I haven't done a leak down test yet, but it seems like a moot point considering zero compression. Is there a way to install the cam wrong or something? I know the pulley can't be! Link to comment Share on other sites More sharing options...
iceageg Posted September 21, 2016 Share Posted September 21, 2016 The 95 engines were not zero clearance. Is it possible you have your timing off enough that valves are open? Link to comment Share on other sites More sharing options...
sparkyboy Posted September 21, 2016 Author Share Posted September 21, 2016 (edited) That's what I was thinking since both cylinders are reading zero. I tried one tooth to the left and one tooth to the right, same result. However, I van feel air moving when I stick my finger in the spark plug holes, but it's nothing like the left, you can barely hear it on the right. I'll do a leakdown test tomorrow to see what is going on when the piston(s) are at tdc. It's a little frustrating because the engine runs good for having two dead cylinders, so I think the wiring part of the swap is ok at least! So close yet so far I cannot wait to drive this thing! Edited September 21, 2016 by sparkyboy Link to comment Share on other sites More sharing options...
sparkyboy Posted September 21, 2016 Author Share Posted September 21, 2016 Link to comment Share on other sites More sharing options...
Caboobaroo Posted September 22, 2016 Share Posted September 22, 2016 Left bank should be higher then 160. I think it's supposed to be 195-210 or so. When you installed the timing belt, did you use the arrow mark or the notch mark on the crankshaft sprocket? Link to comment Share on other sites More sharing options...
sparkyboy Posted September 22, 2016 Author Share Posted September 22, 2016 (edited) I used the notch on the tab for the sensor, as well as the notches on the cam gears that line up with the notch on the plastic cover behind it. I thought maybe the crank wasn't lined up right, that it was maybe on the wrong stroke even though the marks were lined up, but I think if that were the case none of the cylinders would have compression. I'm doing a leakdown test tomorrow, so I'll see what that's about! I'll double check the compression on 1 and 3, thanks caboobaroo! Edited September 22, 2016 by sparkyboy Link to comment Share on other sites More sharing options...
Fairtax4me Posted September 22, 2016 Share Posted September 22, 2016 Did you remove the rocker shaft for any reason? The lash hydraulic adjusters can stick at full extension and hang the valves open. Link to comment Share on other sites More sharing options...
sparkyboy Posted September 22, 2016 Author Share Posted September 22, 2016 I did remove the rocker shaft so I could put new valve seals in, thanks for the tip! I'll be certain to check that! Valve covers will very likely have to come off after doing a leak down test tonight, I'll just bleed all the HLAs Link to comment Share on other sites More sharing options...
Fairtax4me Posted September 22, 2016 Share Posted September 22, 2016 Usually if they sit for a few hours they bleed down on their own. I assume you've started it and it ran like poo, thus finding out no compression? Try starting it again, see if its still rough. Link to comment Share on other sites More sharing options...
sparkyboy Posted September 23, 2016 Author Share Posted September 23, 2016 Well boys this is an embarrassing one, but I found the problem. Get ready to laugh at this one! After removing the valve cover I could hear the compression escaping from the exhaust side. I removed the rocker arms and checked the HLAs (fine) and rotated the engine some more just for grins and I could STILL hear air moving in and out! I'm really confused at this point, so I just bit the bullet and pulled the engine out. Once the cylinder head was off I couldn't believe my eyes! I, drunkenly I must assume, got the exhaust and intake valves mixed up!!! Stupid mistake, I know but I'll get busy with the valve spring compressor tomorrow and a new head gasket and get it all back together. I'll let you guys know how she runs soon, then onto the next little problem that I am certain will pop up! ;P Thanks for your help! Link to comment Share on other sites More sharing options...
DaveT Posted September 23, 2016 Share Posted September 23, 2016 D'oh! Stupid valves. Link to comment Share on other sites More sharing options...
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