Hey folks...

Am in the process of putting my truck back together, 93 4x4 22RE. I bought a remanufactured head from a local shop (new cam, valves, valve springs, etc), new Toyota head gasket & head bolts. I put the head back on last night, torqued everything down. I re-used the old rockers because they didn't look all that bad. I went to start re-adjusting the valves and with the engine at TDC on #1, the exhaust valve was loose but intake was tight. So I loosened the lash adjuster on the intake side, and had to back the adjuster just about all the way out just for the intake valve to close.

The head is a fresh rebuild (off the shelf). What could cause this? IT seemed like I had to back the adjuster ALL the way out. Is this not a big deal?

Looking for your ideas!! I really don't want to put the intake and exhaust manifolds back on if I might have to pull the head off again.

Seems like a stupid question but I'll ask anyway. Are you sure you're on #1 TDC on the compression stroke? If you're on exhaust stroke the exhaust valve could be just closed and the intake just starting to open which would explain tightness on the intake valve.

I'd agree with Kona. Your not at top dead center. You're on the exhaust stroke.

Toyo Master <img src="/forums/images/graemlins/coolg.gif" alt="" />

There's something not right. Either your not at TDC or your cam timing is off or something is really wrong..

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From the top: Place the balancer timing mark at ZERO deg on the scale. Check the timing mark on the upper sprocket. It will either be at 6 o'clock or 12 o'clock. Anywhere else, you're out of time.

Assuming you're in time....

Exactly half the valves will be loose. Adjust those. Turn the crank over one full turn and back to zero TDC. Adjust the remaining valves.


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Still can't get it?

Rotate the engine until the rocker is on the bottom of the cam lobe. Adjust that valve. Repeat with the remaining valves.

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Finally, i have a sinking feeling about this....

Don't start your engine until you've turned it over with a wrench and you're sure that nothing's tight. With the plugs out, it should turn over very easily with NO tight spots.

But if he was on the exhuast stoke the intake would be loose...and the exhuast rocker tight since its that valve that would be opening up. Wow...I just spun my mind in a huge circle...

Anyways, with #1 at top dead center on the compression stroke, both intake and exhuast rockers should be loose. Since he is tight on the #1 intake, he is in more than likely 90* out. Intake- I- is tight E is loose, Compression- Both tight, Power- both tight, Exhaust I is loose and E is tight.
~Darin <img src="/forums/images/graemlins/baby.gif" alt="" />

Sidenote: With most aftermarket cams the adjuster screws will actually almost disappear into the rocker arm leaving just enough room for the lock nut. Ive never seen any application where the adjusters had to be backed out so far.

Not to doubt a resident 22re master but at TDC exhaust you are at the end of exhaust stroke and begining of intake stroke and in theory both rockers should be just barely on the valves but if you're slightly into intake, ie just past TDC, wouldn't the afore mentioned symptoms hold true?

You're right, but that's besides the point. If the cam timing is good, and if he's at ZERO deg, then half the valves should be ready to adjust. 360 crank (or 180 cam) degrees later, the other half of the valves can be adjusted.

Appreciate all the replies.

The engine was indeed at TDC on #1. Cam at 12 o'clock and crank at 0 degrees.

#1 intake was very tight but #3 intake seemed to be OK.

I did a compression check just to be sure that the intake valve #1 was closing all the way and all of the cylinders seemed to be fine. The rest of the valves adjusted OK, just #1 intake had me worried.

FWIW, after cranking the engine over a few times for the compression checks, #1 intake seems to have loosened up a bit so I'm not so worried anymore.

Thief makes a good point, and I agree. Ceteris paribus the valve adjustments should have at least been close. If they sunk the valve seat, then it could have tightened up.

The result of running it this way would have been a cylinder with no pressure and lots of wear on the rocker, tip, and cam lobe.

Good thing you posted.

And this is why I ALWAYS turn my motors over with a wrench first!!!!