How can you tell for sure if the pistons hit the valves on a 1987 toyota 22r truck motor?

need more contents did the timing belt go up in it

A loose valve lifter clearance. 22R/22RE engines easy to adjust with screw driver and wrench. Search YouTube for 22r valve adjustment, as plenty of them online.

check for a failed cat converter if you have one as it may be blocking the exhaust system. check carby for partially blocked main jet

behind the 8 ball........?????
How to find reason?
22R-E and 22R-TE engines? or ?
it means there is a short, and the fuse saved the for sure fire.

is fuse 8 in the dash box.?
what is the output side fuse 8 wire color.?
how many amps.?
why is fuse #8 un-named?

sounds like a man in need of the FSM.
why guess? why not read how to do it and not mess it up.
after all some engine GRENADE if wrong. im not looking 22R.
alldata.com it there ,every tiny step.
i have piles of free honda fsm but not TOy , they are held close by the greedy. LOL
first google hit, am i bless or what?
13000 hits. and first is 4crawler. try that. if $15 alldata.com is too much

https://www.google.com/webhp#q=++Toyota+22r+timing+marks

Fig. 11: Emission system component layout and vacuum diagram-1987 22R-E engine




Fig. 12: Emission system component layout and vacuum diagram-1987 22R-TE engine



Fig. 13: Emission system component layout and vacuum diagram-1987 22R engine (Federal and Canada)



Fig. 14: Emission system component layout and vacuum diagram-1987 22R engine (California)

Hope helps with this (remember comment and rated this).

can send diagram to walk you thru it, need to know if 2wd or 4wd, which motor SOHC,Turbo, 22R-E, 22R-TE,22R, EMAIL ADDRESS TO SEND TO

There ar two thermo vacuum switches on the intake manifold,one in the center top by the EGR pipe right next to the valve cover,and one center bottom on the outside right below the carburator,it may be that one of them is not fully opening/closing when the motor is cold.I'm not sure on this as I've never had this problem with my 22R's,hopefully this will point you in the right direction,if you want comment back and I'll research this further(it's 5 in the morn and I cant access my 22r manual)

Find the EGR valve and underneath the valve there are holes, with the engine running try to open the valve by using a scredriver, the engine should die. do it a few times to clean the valve.

piston has contacted the valves that stay open. they are bent and you need to remove the head and replace them and then reinstall the head with the #1 piston at top dead center and the cams for the #1 cylinder both pointing down, this is the end of the compression stroke and the begining of the power stroke. at this point on the valve train and valve springs are affecting the valves, keeping them open and the rocker arms are not affecting the valves and should both be loose. set distributor to fire on cylinder #1.