Q&A

 Rookie

I'm trying to replace the spark plugs on my 1998 Avalon xls V6. After open the hood, I can see the coils and replace spark plugs 2, 4 and 6, but I can't find coil 1, 3 and 5. Are they behaind the engine? Do I need to take off something then I can find them.
Also, what kind of spark plug do I need for my 1998 Avalon? single arm or double arm?

Thanks.