Well my engine is not running properly right now. It started acting like it was misfiring when the engine was cold. After it warms up it doesn't do it. I recently replaced the plugs because it was about that time. I replaced the plug wire not to long ago. Toyota wires and Denso plugs, ran Denso last time and NGK's all before that. Now I notice that the engine has some sort of ticking sound when at idle. When the engine speeds up, the ticking speeds up with it. I am at school right now and don't have access to my garage until I go home this weekend. By the way it the 3.4. Any suggestions as to what it might be?
Thanks

 

ticking - valves?

running poorly when cold - timing?

 

I though about the valves, but it doesn't really sound like a valve problem, at least from the ones I have dealt with.

Thanks for the heads up, like I said I won't be able to check anything until I get home this weekend.

 

Go out late at night when it's really dark and start it up and open the hood. Look for a spark from the wireing. It will make a ticking noise much like a loose valve. Make sure all your plugs are tight. Check belts too.

 

Yeah I rechecked the plugs last week and they are tight. I replaced belts not long ago and remember checking them recently but I will go back and look again. I'll take a look for some spark when it gets dark tonight.
Thanks

 

The only reason I suggested checking in the dark is because several years ago I replaced the plugs and wires in my old Chevy Suburban 4x4 and started hearing a ticking noise . Checked it at dark and sure enough one of the new wires was jumping a nice spark.
Hope you find that it's something simple, Good luck , Mike

 

Yeah me too, but with 190,000 mi on the odo, some things are bound to go wrong even if it is a Toyota. Just glad its not 90,000 mi like on some other ones