Valve adjustment and overheating

[mep1811]

Can mal-adjusted valves couse overheating?

 

[65swb45]

FJ60[hmm] in El Paso [hmm] in August [HMMM] running hot?

IMO, not a valve issue.

 

[Spanky Pete]

BUMP....Anybody?

 

[Degnol]

BUMP....Anybody?

HOLY RIP VAN WINKLE!!!!!!

 

[grant5127]

If lash is reduced beyond a reasonable amount, several things occur, all of them unpleasant. First, the valve timing is changed slightly, and this may affect performance, and emission outputs. But there is an added complication: The exhaust valve stays alive because it's able to transfer a fair portion of the heat it absorbs from the combustion process directly into the cylinder head when it's resting on its seat. As clearance is reduced, the valves spend less time on their seats. This means the exhaust valve(s) has less time to give up its heat, leading to anything from detonation, pre-ignition and engine overheating, to a warped or burnt valve...........

Just saying.......... take it with a grain of salt............

 

[ocdbeetle]

What he ^ said.....but I was going to say
If its that mal adjusted you've probably got other things you're going to be worrying about.....

I guess you're overheating Pete?

 

[Spanky Pete]

"I guess you're overheating Pete?"

Nope. Thought I was, but I was getting a false reading. The wire from temp sending unit was touching the rear of the air rail. The air rail got hot enough to melt thru heat guard tubing and wire insulator to contact the wire and give a false reading.

Was pretty worried at first. Thought I must have really goofed on the valve adjust, but just goofed when putting everything back together.