acerbis

I've been checking and tuning my 87 22r for a month now and finally did a compression test. Well I found my problem. #2 had 0 compression. And the spark plug has some carbon build up. So i'm assuming that I need to adjust the valves. Hopefully that will be all of it. Just curious if there is anything that I should watch out for while adjusting the valves??

MMA_Alex

not really. do a search if you want advice on it, theres a ton of threads.

you can also use it as an opportunity to check the condition of the timing chain.

remember to do it when its hot

Green93

If you have 0 compression then I think it is going to be more than an adjustment.

MMA_Alex

not necissarily. if they're way overtightened it could be the valves.

acerbis

Maybe it could be a bent valve but....? I am going to try and do it tomorrow. Getting cold outside and dark sooner! The timing chain..... what do i need to look for? And what is normal compression for the 22r? i have 150 in the three good cylinders. I can't wait to have 25% more power!! lol

MMA_Alex

no slack, guides all there, wear in the cover, condition of the chain etc.

it'll be more than 25% btw because the rest of the engine wont be dragging that cyl along

if its a bent valve this isnt gunna fix it. this will just fix the valve adjusters being too tight causing the valves to remain open when they're supposed to be closed

ovrrdrive

I'd be shocked if the problem is a valve out of adjustment...

But I've been wrong before...

If you go in and the intake valve is very loose and adjusting it doesn't help, it's either bent or has a chunk of carbon holding it open. Either way it will be time for a valve job.

acerbis

good news. the #2 exaust valve had no clearance.
pretty fast job. not much to it! that really makes me like this truck. Now it has some power! I just thouht all toyotas dragged a$$. On to suspension and that exaust leak.

Green93

Good news man...congrats.

thook

That IS good news. Cheerio.

ovrrdrive

And then here I am, shocked...

Glad you got it nailed. Did you recently do an adjustment or has this valve just gone out of adjustment by itself?

acerbis

I bought the truck about a month ago. I've done a number of things. When I replaced the spark plugs and wires the #2 plug looked like a mutant! So I knew something was up. Thank God it wasn't a bent valve. Just a testament on how great these engins are. Three cylinders for who knows how long!
I adjusted the timing a little bit more then 0 degrees. Maybe around 6 btdc. Sounds and feels better. Now my question is that my other spark plugs were a little on the lean side. How do richen up a 22r just a bit?

82yota

You might have it feeling even betting if you bring it to 8* BTDC. That is the proper spec. Hard to believe someone would adjust it out that much to cause no compression haha.

MMA_Alex

the correct timing is 5 degreed btdc with the e1-te1 terminals jumped...not 8. without the terminals jumped it should be higher than 8

82yota

This is a 22R not an RE. At least the FSM for my 22R said 8* with the vacuum advance lines pulled.

MMA_Alex

wasn't aware there was a difference